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Ammattilaiselta
Ammattilaisille
Huomioi! FATTORE Vitale & Co.
ei
 toimi kuluttajamarkkinoilla.

Yritykselt
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Huomioi! FATTORE Vitale & Co.
ei
 toimi kuluttajamarkkinoilla.

30
 
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Takaisin etusivulle

 

Painoit
Advanced Humidity Temperature Data Logger

 

Advanced Humidity Temperature Data Logger

 


 

The HygroLog NT and associated HW4 software comply with FDA CFR part II regarding electronic record keeping.

The
HygroLog NT can be networked for the purpose of monitoring and capturing data from several locations to a PC.

On-site data logging by the
HygroLog NT, combined with the capability of automatically downloading log files to the PC,
provides protection against loss of data in the event of a power outage or network failure.

 Complies with FDA 21 CFR Part II regarding electronic record keeping

Can be networked to remotely monitor / collect data

Protects your data in the event of a power outage
 

  • Relative humidity, temperature, dew point or other calculated parameter
     

  • Multi-probe capability, wide selection of probes to satisfy every application
     

  • Using a docking station, up to 7 probes and two external contacts can be connected to a single HygroLog NT.
     

  • With external probe you can perform measurements from 0 to 100%RH and -50..200C.!
     

  • Optional internal humidity-temperature probe, protected against unauthorized removal
     

  • Monitoring of up to two external contacts (door, relay contact, etc.)
     

  • Optional LC display and multi-function keypad.
     

  • Large recording capacity with removable flash memory card
     

  • Operates with a 9 VDC standard or rechargeable battery.
     

  • Data download without interrupting the measurements.
     

  • Full featured, Windows based ROTRONIC HW4 software.

    Optional OPC tags allow importing data into practically any third-party OPC client application.
     

  • Interchangeable humidity-temperature HygroClip probes for fast and easy maintenance.

Advanced Humidity / Temperature Data Logger HygroLog NT

► Complies with FDA 21 CFR Part II regarding electronic record keeping.
 
► Can be networked to remotely monitor / collect data (Ethernet, RS232/485, USB).
 
► Protects your data in the event of a power outage

  • Full featured, Windows based HW4 software with optional tags to allow importing data into a third party OPC client
     

  • Relative humidity, temperature, dew point or other calculated parameter
     

  • Measuring range: 0..100%RH and -50..200C with remote probe
     

  • Multi-probe capability
     

  • Large recording capacity with removable flash memory card
     

  • Data download without interrupting measurements
     

  • Available with Bluetooth wireless transceiver
     

  • Interchangeable humidity-temperature probes for fast, economical service

Models

HygroLog NT2 Key Features

Measures and records humidity, temperature and calculated parameter (see list below)

Available with or without display and keypad

Internal humidity-temperature probe designed to prevent unauthorized removal.
 
Measuring range: 0..100%RH and -50..200C when probe is separated from logger with a cable (depends on probe model)
 
Large recording capacity with removable flash memory card

Full probe adjustment functions directly from keypad

Interchangeable humidity-temperature HygroClip probe for fast and easy maintenance
 
Remote mode allows model with display and keypad to read / configure models w/o display and keypad
(see connector on top of the logger)
 
Available with Bluetooth transceiver (display and keypad required)
 
Complies with FDA 21 CFR Part II when used together with the
 
ROTRONIC HW4 software

The optional docking station adds the following features (depends on docking station model):

Up to 4 additional external probes:
HygroClip probes, third party analog probes or 4-wire RTD
 
Monitoring of up to two external contacts (door, relay contact, etc.)
 
Power provided by an AC adapter
 
Data download without interruption of the measurements
 
Networking (RS485 or Ethernet)
 

Model Codes:

Basic models without display and keypad

HYLOG-NT2: includes internal HygroClip S probe
 
HYLOG-NT2-NP: data logger only, without internal HygroClip S probe
 
HYLOG-NT3: includes internal HygroClip S probe
 
HYLOG-NT3-NP: data logger only, without internal
HygroClip S probe
 

Models with display and keypad

HYLOG-NT2D: includes internal HygroClip S probe
 
HYLOG-NT2D-NP: data logger only, without internal HygroClip S probe.
 
HYLOG-NT3D
: includes internal HygroClip S probe.
 
HYLOG-NT3D-NP: data logger only, without internal HygroClip S probe.
 

Calculated Parameter:

Each probe input of the HygroLog NT2 and NT3 (or docking station)
can be individually configured to calculate and record one of the following parameters:

  • Dew point (Dp)

  • Frost point (Fp)

  • Wet bulb temperature (Tw)

  • Enthalpy (H)

  • Vapor concentration (Dv)

  • Specific humidity (Q)

  • Mixing ratio by weight (R)

  • Vapor concentration at saturation (Dvs)

  • Vapor partial pressure (E)

  • Vapor saturation pressure (Ew)

Internal Probe:

The Internal probe of the HygroLog NT2 and NT3 is a HygroClip S

Models with an internal probe ship with the probe retracted for maximum probe protection.

For a faster response, the internal probe can be extended as shown on the picture to the left.

This is done by opening the HygroLog NT (instructions are provided in the user manual).

If so desired, the probe can also be separated from the
HygroLog NT with a length of cable. 

Probes Options

Portable Probes (Handheld)

HygroClip S
HygroClip S: internal or external probe for HygroLog NT2 / NT3
for measurement in air, max. 85C , wire mesh filter
length: 100mm , : 15mm
 


HygroClip SP05
for measurement in air ducts, max. 85C
tube length: 200mm  : 5mm 
cable: 2m

 

HygroClip SC05
HygroClip SC05
for measurement in tight spaces, max. 100C (212F)
diameter: 5mm (0.2"), cable: 2m (6.5ft)

 

HygroClip HK25 / HK40 
HygroClip HK25 / HK40
air probe for measurement at high temperature
HK25: max. 100C. / HK40: max. 200C.
wire mesh filter
tube length: HK25: 250mm  / HK40: 400mm,  15mm
cable: 2m


HygroClip HP28 tubular probe
HygroClip HP28 insertion probe
for measurement of materials in bulk, max. 85C 
sintered steel filter
tube length: 280 , d: 10mm (0.4")
cable: 2m

 HygroClip HS28 sword probe
HygroClip HS28 sword probe
for measurement of paper stacks/rolls, max. 85C
blade length: 280 , w: 18mm , th.: 4mm 
cable: 2m

Note: the above probes have a 5-pin DAT-05 connector.
Extension cable
MOK-02-DAT05 can be used to connect any of the above probes to input 1
of the
HygroLog NT2 / NT3 (this input is normally used for an internal HygroClip S probe).
Adapter cable
MOK-02-B5 is required to connect any of the above probes to inputs 2 and 3 the HygroLog NT3 or to inputs 4 to 7 of the docking station (see Accessories).

 

Fixed Installed Probes


HygroClip IC-1 (100mm) / IC-3 (250mm)
for through wall installation, PPS body, wire mesh filter
-50...200C
body: length: 100/250mm, d: 15mm
cable: 2m


HygroClip IM-1 (120mm) / IM-3 (270mm)
recommended for high humidity, high temperature applications
for through wall installation, stainless steel body, wire mesh filter
-50...200C.
body: length: 120/270mm, d: 15mm 
cable: 2m


HygroClip IE-1 (G1/2 ") / IE-3 (NPT1/2 ")
for pressurized applications max. 50 bar (725 PSI)
sintered stainless steel filter
applications at ambient temperature, survives -50...85C.
cable: 2m

Note: the above probes have a 7-pin connector.
An adapter cable such as the T7-03-B5 is required for connection to inputs
 2 and 3 the HygroLog NT3 or to inputs 4 to 7 of the docking station (see Accessories).
Extension cable mod. AC1616 is not compatible with the HygroLog NT.

Docking Stations and Desk Stand

Depending on the model, the optional docking station allows to do the following:

  • Mount the HygroLog NT to a wall
    (logger can be secured to docking station with a padlock)

  • Place the HygroLog on the optional desk-top stand

  • Use an external AC adapter to power the HygroLog NT

  • Connect the HygroLog NT to a PC via a serial port (RS232)
    or a USB port

  • Connect the HygroLog NT to an Ethernet network
    (TCP/IP protocol)

  • Connect up to 4 additional probes to the HygroLog NT
    Monitor up to two external contacts (relay, door, etc.)

  • Connect up to 64 HygroLog NT together in a multi-dropped arrangement (RS-485)


 

 
 
 

 

 

 

 

 

   

HygroLog NT3 with docking station and desk stand
Model Numbers:
DS-NT1 Basic docking station without internal electronics. This model simply provides a receptacle for an AC adapter used to power the HygroLog NT
DS-NT2 Receptacle for AC adapter, one serial port (RS232) and one RS485 port (multi-drop). This model has an internal electronic circuit 1.
DS-NT3 Receptacle for AC adapter, one USB port and one RS485 port (multi-drop). This model has an internal electronic circuit 1.
DS-NT4 2 Receptacle for AC adapter, one RJ45 connector (Ethernet) and one RS485 port (multi-drop). This model has an internal electronic circuit 1.
DS-U-1 Receptacle for AC adapter, one serial (RS232) port, one RS485 port (multi-drop), four probe connectors (HygroClip or analog probe), one connector for up to two digital input signals. This model has an internal electronic circuit 1.
DS-U-2 Receptacle for AC adapter, one USB port, one RS485 port (multi-drop), four probe connectors (HygroClip or analog probe), one connector for up to two digital input signals. This model has an internal electronic circuit 1.
DS-U-4 2 Receptacle for AC adapter, one RJ45 connector (Ethernet), one RS485 port (multi-drop), four probe connectors (HygroClip or analog probe), one connector for up to two digital input signals. This model has an internal electronic circuit 1.
DS-PT-2 Receptacle for AC adapter, one USB port, one RS485 port (multi-drop networking), four connectors for RTD probe (direct 4-wire connection), one connector for up to two digital input signals. This model has an internal electronic circuit 1.
1 The electronic circuit substantially increases the current drawn from the logger battery. Use over extended periods of
   time generally requires an external AC adapter.
2 By nature, these models generate enough heat to noticeably increase the temperature of both the docking station and
  data logger. Any probe connected to the HygroLog NT should be separated by a length of cable to maintain the
  accuracy of the temperature and humidity data. Please also note that these models require too much current to be
  powered from the logger battery alone, even over a brief period of time.
 

HW4 Software

The ROTRONIC HW4 software can be used only with the HygroLog NT. Other ROTRONIC products will added shortly. HW4 is available in two versions:
HW4 Standard Edition: for single users.
  • Unlimited number of instruments (depends on capabilities of PC and available ports)
  • On-line display of the measured and calculated values (dew point or other) - limited to a single instrument at a time (instrument may have several probes).
  • Automatic retention of the most recent data in a temporary on-line buffer.
  • Logging of measured and calculated values to the PC (can be done simultaneously with local data logging).
  • Easy-to-read graphs and data tables.
  • Statistical data: mean, standard deviation, minimum and maximum (off line data only).
  • Data print-out (table or graph)
  • Automatic device/instrument recognition and identification
  • Device/instrument configuration
  • Adjustment (calibration) of the HygroClip digital probes
  • Psychrometric Conversion Tool
  • Built-in security to protect against manipulation of recorded data

HW4 Professional Edition: meets the requirements of FDA 21CFR Part II / GAMP and allows multiple users, with either administrator or standard rights. On each single port (RS-232, USB or TCP/IP), HW4 Professional can monitor up to 64 instruments connected together in a multi-dropped RS-485 network. The number of such networks depends on the number of available ports.

  • All the functionality of HW4 Standard Edition

  • On-line display in a single graph of the data from multiple instruments and probes

  • Overlaying of several log files into a single graph

  • User Event Logging: automatically keeps track of user activity

  • Self Event Logging: automatically records eventual software problems to facilitate troubleshooting

  • Logger Event Logging: automatically records the data logger internal events and configuration changes.

  • Automatic creation of protocols detailing instrument configuration changes, log function programming and probe adjustments.

  • Password protected log-in

  • Indication of an alarm condition when displaying log file data

The following functions will be added to HW4 Professional during 2005 (upgrade will be available on the Internet):

  • Optical and acoustical indication by the PC of an alarm condition with the option of sending an e-mail or SMS

  • Automatic reading and archiving on the PC of local log files

A special version of HW4 Professional Edition features OPC tags which can be used to import data into practically any third-party OPC client application.


HW4 Requirements:

Computer/Operating System Requirements:

The following are the minimum values required to install and run HW4 on a computer. It is highly recommended to exceed these values.

  • Processor: Pentium II, 450 MHz
  • RAM: 128 MB
  • Available hard disk space: 50 MB
  • Monitor: SVGA, 1024 x 768, 256 colors
  • Ports: one free serial (COM) port or one free USB port or Network Interface Card (Ethernet)

 Operating System Compatibility:

  • Windows 98, XP, NT4 with SP 6a or higher
  • Windows 2000 with SP 2 or higher
  • Windows Server 2003

HW4 was written for the Microsoft .NET framework and requires this framework to be installed on the computer. The .NET framework offers significant improvements in the areas of networking and user security. When new software is being installed, the .NET framework also eliminates the potential problem of conflicting dynamic library files (DLL).

 

Networking

 

The ROTRONIC HW4 software allows the on-line monitoring on a PC of an almost unlimited number of networked data loggers, the programming of the data logging function (for each logger and/or on the PC), the downloading and visualizing of the recorded data, the adjustment of any HygroClip probe connected to the HygroLog NT and the configuration of the HygroLog NT itself. When data has to be centralized into a single third-party application, a special version of HW4 features OPC tags. In principle, these tags can be read by practically any OPC client application (of-the-shelf or custom designed).

Connecting the HygroLog NT to a network allows you to remotely monitor and record data on a PC (using a local network or via Internet). This can be done either with the HW4 software or with your own custom application (see HygroLog NT communications protocol). In the event of a power outage, protection against loss of data can be provided by simultaneously recording data both on the HygroLog NT and on the remote PC. Whenever required, the log files located on the HygroLog NT can be downloaded to the remote PC, using either HW4 or a custom designed application.

Networking and communication with a PC requires a docking station. Several models of docking stations are available with the following interfaces:

  • RS-232 (COM) port
  • USB port
  • Ethernet (TCP/IP)

When the number of available ports (COM, USB or Ethernet) is limited, up to 64 HygroLog NT can be connected together using a multi-dropped RS-485 network. In principle, an unlimited number of such networks can be used.

Example 1: Docking station with RS232 or USB port

The number of docking stations with RS-232 or USB port that can be directly connected to a PC depends on the number of physical COM ports and USB ports available on the PC.

 

Example 2: Ethernet docking station (RJ45 connector)

Our Ethernet compatible docking stations allow a substantial number of HygroLog NT to be centrally monitored by a single PC (up to 253 docking stations per LAN / sub-network). Due to current technological limitations, please note that the HygroLog NT should be not be used with the optional internal probe because of the heat generated by this type of docking station. Accurate measurements require a probe separated from the docking station and data logger by a length of cable.

 

 
Advanced Humidity / Temperature Data Logger
 
 
Probe Adjustment

 

When equipped with the LC display and keypad, the HygroLog NT can be used to adjust any HygroClip probe connected either to the logger or to the docking station. Probe adjustment functions include the following:

  • 1-point adjustment of humidity (offsets all measurements)

  • 1-point adjustment of temperature (offsets all measurements)

  • Full adjustment of humidity (from 2 to 4 points)

  • Full adjustment of temperature (2-point)

The ROTRONIC HW4 software offers the same functions with the additional benefit that a probe adjustment protocol can be generated and printed.

Example of HW4 Probe Adjustment Protocol (also available in MS Word format):
 

Calibration standards 

Certified Humidity Standards:
if you do not have access to a humidity generator, the ROTRONIC humidity standards offer a reliable and convenient way to generate a reference humidity condition during probe calibration. The ROTRONIC standards are shipped with an internationally accepted certificate, meeting in full the requirements of quality systems such as ISO9000. The standards are available in boxes of 5 glass ampoules of the same value, and can be stored indefinitely. Standards in the range of 5 to 95 %RH are non-saturated aqueous salt solutions. The 0 %RH humidity standard is made of small granules of a highly porous ceramic. A Material Safety Data Sheet is available for each standard.

Calibration devices 

Calibration Devices:
a calibration device is a small airtight container that fits on the probe and seals around the humidity sensor. During calibration, a known reference humidity is produced inside the calibration device by means of a humidity standard.

Specifications

Model

HygroLog NT2

HygroLog NT3

Internal Humidity / Temperature probe

Plug-in ROTRONIC HygroClip S

Operating limits electronics

Humidity: 0100 %RH
Temperature: -3070 C (-22158F) / -1060 C (14140F) with display 

Battery operating limits

Alkaline battery: -10+50 C (14122F)
Lithium battery: -30+70 C (-22.158F)

Measuring range

Internal probe:  0100 %RH, same temperature limits as logger
External probes: See probe specifications

HygroClip probes are available for temperatures within the range of -50200C
( -58392F)

Accuracy at 23C
(internal probe)

1.5 %RH
0.2C

Interface

Logger: UART / Bluetooth (option)
Docking station: RS232 or USB or RJ45 (Ethernet), RS485

Internal Power supply

9V battery ≥500 mAh

External power supply

Via docking station (allows use of a rechargeable battery)

Battery lifetime

> 1 year - w/o display, 1 probe, 15 min. log interval

Display

Graphic LC display (option)

Event logging

Last 170 events such as configuration changes, alarm, etc.

Internal Menu

Simplified functions, viewing of logged data

Internal probe adjustment

Direct from internal menu

External probe adjustment

Direct from internal menu (HygroClip probes only)

Logger probe inputs

Internal probe

Internal probe
+ 2 external HygroClip probes

Docking station inputs

Up to 4 probes (HygroClip probes, analog probes or RTD probes (Pt100) and
2 external contacts (depends on docking station model)

Plug-in Memory Card

Compact flash memory card (16 MB standard - up to 1 GB)

Internal memory

EEPROM

Memory capacity
(16 MB compact card)

400,000 data points in text file format
752,000 data points in encoded binary format (protected)

Log interval

Programmable from 5 sec to 24 hours

Log mode

Start / Stop, with programmable date and time

Alarm function

Optical and acoustical - programmable

Housing ABS, internal protection grade IP65
Dimensions Logger:  155 x 106 x 37 mm
Docking station: 110 x 70 x 37 mm
Weight Logger: about 300 g
Docking station: about 175 g
NT desk stand: About 350 g
Conformance CE / FDA CFR 21 Part 11 / GAMP4
Anti-theft protection Use docking station
Outline Drawings (dimensions in mm)
HygroLog NT
Docking Station
 
 


 

Datasheet

Instruction Manual

   

HygroLog NT

Humidity Temperature Data Logger

Instruction Manual

in-lognt-rev10 11/19/2004 - 2 - _____________________________________________________________________________

Contents:

DESCRIPTION...............................................................................................................................3

Overview....................................................................................................................................3

HygroLog NT - hardware description...........................................................................................4

Models....................................................................................................................................4

Memory...................................................................................................................................4

Probes....................................................................................................................................5

Output / interface......................................................................................................................7

Remote Mode connector (NT2 and NT3).................................................................................7

LED.........................................................................................................................................7

Internal beeper.........................................................................................................................7

Power.....................................................................................................................................8

Docking station........................................................................................................................9

Analog probe inputs...............................................................................................................11

RTD inputs.............................................................................................................................11

Digital signal inputs (on / off)..................................................................................................11

Internal Bluetooth transceiver.................................................................................................11

Connectors and pin-out diagrams (receptacle)......................................................................12

Operating limits (instrument only)..............................................................................................15

Software functions.....................................................................................................................16

Calculated parameter.............................................................................................................16

Trend indicators.....................................................................................................................16

Alarm function.......................................................................................................................16

Data logging..........................................................................................................................17

Display-Sleep function............................................................................................................18

Compliance with FDA 21CFR Part II and GAMP.......................................................................18

OPERATION................................................................................................................................20

Required accessories / equipment............................................................................................20

Getting started...........................................................................................................................21

Display and keypad....................................................................................................................21

Display modes...........................................................................................................................22

Operating modes and measurement interval.............................................................................22

Settings and functions................................................................................................................23

Settings and functions accessible both from the Keypad and HW4......................................23

Settings and functions accessible only with HW4..................................................................23

Internal Function menu..............................................................................................................24

Log data................................................................................................................................24

View Data..............................................................................................................................24

Adjust (except HygroLog NT1)...............................................................................................25

Settings.................................................................................................................................25

Instrument..............................................................................................................................26

Inputs....................................................................................................................................26

Docking Station......................................................................................................................26

Remote Mode (HygroLog NT2 / NT3)....................................................................................27

Warnings and Useful tips...........................................................................................................27

ADJUSTING A HYGROCLIP PROBE...........................................................................................28

Single Point...............................................................................................................................28

Multi-Point................................................................................................................................29

NETWORKING.............................................................................................................................31

ACCESSORIES............................................................................................................................35

COMMUNICATIONS PROTOCOL................................................................................................36

- 3 - _____________________________________________________________________________

 

DESCRIPTION

Overview

HygroLog NT is a series of data loggers primarily designed for use with the HygroClip digital humidity-temperature probes. The HygroLog NT operates together with the ROTRONIC HW4 software for Windows based PCs. The main functions of HW4 include configuring the HygroLog NT, programming the logging functions, downloading the recorded data, on-line data monitoring by the PC, automatic generation of graphs and data tables, networking and adjustment (calibration) of the HygroClip probes. Depending on the model and options, main features are as follows:

Internal humidity-temperature probe designed to prevent unauthorized removal.

Inputs for up to 6 additional external probes, including analog probes and 4-wire passive RTD probes.

Monitoring of up to two external contacts (relay output, door, etc.).

Large recording capacity with removable flash memory card. Up to 750,000 values can be recorded with the standard 16 MB card. Cards with a capacity of up to 1 GB are available.

Display and keypad. This allows the HygroLog NT to operate as a stand-alone unit after initial configuration with the HW4 software.

Compliance with FDA 21 CFR Part II and GAMP regulations regarding electronic records and electronic signatures.

Compatible with Ethernet networks (TCP / IP protocol - RJ45 connector).

Dedicated RS-485 network of up to 64 HygroLog NT per communication port (RS-232, USB or Ethernet).

Simultaneous data recording and data display either locally or on a PC.

Internal power for both the HygroLog NT and probes is provided by a 9V battery (factory standard) or by a 9V rechargeable battery (user supplied).

The optional docking station is required (a) to power the HygroLog NT with an external AC adapter, (b) to configure the HygroLog NT and communicate with a PC, (c) to connect the HygroLog NT to a network and (d) to mount the HygroLog NT to a wall or to place the HygroLog NT on the optional desk-top stand.

The most basic model of docking station simply provides a means of mounting the HygroLog NT to a wall and of powering the HygroLog NT with an external AC adapter. All other models offer the same functionality as the basic model and also provide a communication port (RS232, USB or RJ45 / Ethernet) as well as additional inputs for probes and external contacts. Docking stations with an RS232 or USB port are used to connect the HygroLog NT directly to a PC. Docking stations with an RJ45 connector are used to connect the HygroLog NT to an Ethernet LAN. In both cases, the docking station features an RS485 port that can be used to connect up to 64 HygroLog NT in a multi-dropped arrangement (dedicated RS-485 network). This is useful when the PC does not have an Ethernet network interface card or when the number of available Ethernet ports is limited. Direct connection to an Ethernet LAN allows, in principle, an unlimited number of HygroLog NT to be put on a network monitored by the HW4 software. HW4 allows any combination of RS-232, USB, Ethernet and RS-485 connections.

The optional Bluetooth internal wireless transceiver can be used as an alternative to communicating via a docking station. This allows bi-directional communication with a PC over distances of up to 9m / 30ft. Communication with the PC is on a one to one basis (no networking).

Using either the optional Bluetooth transceiver or a network allows downloading data without removing the HygroLog NT from its location. A fail safe network is obtained by combining remote data monitoring and local data logging.

- 4 - _____________________________________________________________________________

HygroLog NT - hardware description

Models

Basic models without display and keypad

HygroLog NT1: internal humidity-temperature probe, non-removable.

HygroLog NT2: internal HygroClip S probe, removable (plug-in)

HygroLog NT3: same as NT2 with 2 additional connectors suitable for a HygroClip digital probe.

Models with display and keypad

HygroLog NT1-D: same probe as HygroLog NT1

HygroLog NT2-D: same probe as HygroLog NT2

HygroLog NT3-D: same probe / probe inputs as HygroLog NT3

Models with internal Bluetooth transceiver

The following models are equipped with Bluetooth transceiver, display and keypad

HygroLog NT2-D-BT: same probe as HygroLog NT2

HygroLog NT3-D-BT: same probe / probe inputs as HygroLog NT3

Memory

The HygroLog NT has a non-volatile 64 kb EEPROM internal memory that is used to save the logger configuration data, the logger events and to temporarily hold measurement data.

The main memory is a plug-in flash memory card. This holds a maximum of 498 measurement data files as well as one configuration and one logger-event file. As a standard, the HygroLog NT ships with a 16 MB card. This card allows the recording of up to 400,000 values in text file format (unprotected) or up to 750,000 values in binary file format (protected). Memory cards with a capacity of up to 1 GB can be purchased from third parties.

The measurement data can be saved either to a file with extension XLS or to a file with extension LOG. Files with XLS extension can be read with Notepad or imported into Microsoft Excel. Files with extension LOG are encoded in binary format so as to prevent data manipulation and can only be read with the ROTRONIC HW4 software. Both types of files can co-exist on the memory card. The memory card can be removed from the logger and transferred to a card reader, a PDA, etc. The flash memory card can also be read without being removed from the logger.

Memory Card:

To access the memory card, remove the screw shown to the right and pull out the rubber cover.

The plug-in flash memory card is located on top of the main board.

memory

card

cover

screw

- 5 - _____________________________________________________________________________

Probes

Internal Probe (probe 1)

HygroLog NT1: this model is equipped with a non-removable internal probe, located under the slotted cap on the right hand side of the instrument.

HygroLog NT2 and NT3: both models are supplied with a HygroClip S probe. This probe can be either retracted or extended and can also be separated from the logger with an extension cable. Open the housing of the HygroLog to change the position of the probe or to install a probe extension cable.

To extend the probe, lift the HygroClip S probe from its position and remove the slotted cap from the HygroLog. To extend the probe, place on the probe the ring supplied with the HygroLog. Insert the ring into the slot in the instrument housing where the slotted cap was. Relocate the probe connector up by one or two ribs. Close the instrument housing. Proceed in a similar manner to install a probe extension cable.

To open the housing of the HygroLog, remove the five screws, as indicated by the arrows. The far right drawing shows the HygroClip S probe in the retracted position. The base of the probe is plugged into a connector that is separated from the main board by a length of wire.

Probe

connector

Ring (replaces the slotted cap)

Extension cable used to separate the probe from the HygroLog.

HygroClip S extended position

The shorter screw goes here

- 6 - _____________________________________________________________________________

Notes:

1) For maximum protection against vandalism, use the probe in the retracted position. For a faster response, use the probe in the extended position.

2) The extension cable allows to make full use of the operating temperature range of the HygroClip S or to use another model of HygroClip probe.

External Probes (HygroLog NT3)

The HygroLog NT3 permits the use of additional ROTRONIC HygroClip digital humidity temperature probes. These probes permit to take full advantage of all the features and functions of the HygroLog NT. The ROTRONIC HygroClip digital probes are highly accurate and are calibrated entirely by means of software (no adjustment potentiometers). Because calibration and other data are stored in the probe non-volatile memory, the probes are fully interchangeable. When a probe requires calibration or has to be repaired, it can be replaced with another probe in a few seconds.

The ROTRONIC HygroClip digital probes are available in different configurations so as to meet the requirements of each application:

Note: the above probes have a 5-pin DAT-05 connector. Extension cable MOK-02-DAT05 can be used to connect any of the above probes to input 1 of the HygroLog NT2 / NT3 (this input is normally used for an internal HygroClip S probe). Adapter cable MOK-02-B5 is required to connect any of the above probes to inputs 2 and 3 the HygroLog NT3 or to inputs 4 to 7 of the docking station (see Accessories).

HygroClip HS28 sword probe

measurement of paper stacks/rollsmax. 85C (185F)

HygroClip HK25 / HK40 air probe

measurement at high temperatureHK25: max. 150C (302F) HK40: max. 200C (392F) wire mesh filter

HygroClip HP28 insertion probe

measurement of materials in bulk max. 85C (185F) sintered steel filter

HygroClip SP05

measurement in air ducts

max. 85C (185F)

HygroClip SC05

measurement in tight spaces

max. 100C (212F)

HygroClip S

measurement in air

max. 85C (185F) wire mesh filter

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Note: the above probes have a 7-pin connector. An adapter cable such as the T7-03-B5 is required for connection to inputs 2 and 3 the HygroLog NT3 or to inputs 4 to 7 of the docking station (see Accessories). Extension cable mod. AC1616 is not compatible with the HygroLog NT.

Output / interface

The HygroLog NT has one connector located on the back of the instrument. This connector provides a UART interface and is meant to be used with a docking station.

Remote Mode connector (NT2 and NT3)

Both the HygroLog NT2 and NT3 have a remote mode connector. This allows using a HygroLog NT2-D or a HygroLog NT3-D (display and keypad) to read, configure or program a HygroLog NT2 or a HygroLog NT3 (without display and keypad).

See Internal Function Menu, Remote Mode

LED

The HygroLog NT is equipped with a green and red LED. The logger can be configured with HW4 to have the green side of the LED flash when logging is active. The red side of the LED can be made to flash when there is an alarm condition (see note below) and / or when the logger requires attention (low battery, flash memory card full, etc.)

In the transient alarm mode, the red LED flashes for only as long as the data from a probe corresponds to an alarm condition. In the durable alarm mode, the red LED stays on even after the alarm condition has disappeared. When the LED is set to provide a durable alarm, it can be reset from the keypad or with HW4.

Internal beeper

The HygroLog NT is equipped with an internal beeper and can be configured with HW4 to make a clicking sound when any key is being pressed. The beeper can also be configured to emit a 5-second non-repeating sound when there is an alarm condition and / or when the logger requires attention.

HygroClip IC-1 (100mm) / IC-3 (250mm)

for through-wall installation

max. 200C (392F) - wire mesh filter

HygroClip IM-1 (120mm) / IM-3 (270mm)

for through-wall installation in high humidity applications

max. 200C (392F) - wire mesh filter

HygroClip IE-1 (G ") / IE-3 (NPT ")

for compressed air (max. 50 bar / 725 PSI)

max. 85C (185F) sintered steel filter to avoid errors, temperature should be the same on both sides of the mounting wall

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Power

The HygroLog NT ships with a regular 9V battery which must be inserted first. To conserve battery power, models with an LC display are shipped with the Display Sleep function enabled. As a result, the display goes blank sometimes after inserting the battery. The display can be temporarily activated by pressing on any key of the keypad or by communicating with a PC. HW4 is required to deactivate of reconfigure the Display Sleep function.

As an alternative, a rechargeable battery (accumulator) can be used after reconfiguring the HygroLog NT with HW4. The HygroLog NT can also be powered with an external AC adapter via the optional docking station.

Trying to recharge a regular battery is potentially dangerous. Whenever a regular battery is being used, the logger should be configured with the internal battery charge function disabled.

The HygroLog NT has a battery lifetime of one year when just one HygroClip probe is being used (standard 500 mAh alkaline battery), when no docking station with internal electronics is connected to the HygroLog NT and when the logger is configured / programmed as follows:

Display Sleep function enabled (models with display)

No docking station with internal electronics

LED and beeper functions disabled

Log interval set to 15 minutes

Additional examples of battery lifetime (LED turned off, Logging active): in the following table, LCD means that the LC display is permanently on (Display Sleep function disabled). No docking station with internal electronics is connected to the HygroLog NT.

Lifetime in days

RechargeableBattery 120mAh

RechargeableBattery 150mAh

Regular Battery 500mAh

Regular Battery 1000mAh

1 Probe / 5s Interval

1.8

2.3

7.8

15.6

1 Probe / 5s Interval / LCD

1.6

2.0

6.7

13.5

1 Probe / 1min Interval

20

25

84

168

1 Probe / 1min Interval / LCD

6

8

26

52

1 Probe / 15min Interval

84

105

350

700

1 Probe / 15min Interval / LCD

10

12

41

82

Note: the consumption of the display is negligible when the Display Sleep function is enabled. With the display always on, power consumption is at its highest when the display refresh rate is set with HW4 to the minimum of 5 sec.

Because of the requirement to keep track of the date and time, the HygroLog NT does not have a power on/off switch. Every minute, both the date and time are recorded to the internal EEPROM. Seconds are not recorded. In the event of a relatively brief interruption of power (such as when replacing the battery), time may fall behind in increments of one minute. Removing the battery for an extended period of time will cause the logger to completely lose track of the date and time.

See also Display Sleep function under Software Functions.

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Docking station

A docking station is required to do any of the following:

Mount the HygroLog NT to a wall

Place the HygroLog on the optional desk-top stand

Use an external AC adapter to power the HygroLog NT

Connect the HygroLog NT to a PC via a serial port (RS232) or a USB port

Connect the HygroLog NT to an Ethernet network (TCP/IP protocol)

Connect additional probes or digital input signals to the HygroLog NT

Connect up to 64 HygroLog NT together in a multi-dropped arrangement (RS-485)

The docking station is available in the following configurations:

DS-NT1: basic docking station without internal electronics. This model simply provides a receptacle for an AC adapter used to power the HygroLog NT

DS-NT2: receptacle for AC adapter, one serial port (RS232) and one RS485 port (multi-drop). This model has an internal electronic circuit.

DS-NT3: receptacle for AC adapter, one USB port and one RS485 port (multi-drop). This model has an internal electronic circuit.

DS-NT4: receptacle for AC adapter, one RJ45 connector (Ethernet) and one RS485 port (multi-drop). This model has an internal electronic circuit.

DS-U-1: receptacle for AC adapter, one serial (RS232) port, one RS485 port (multi-drop), four probe connectors (HygroClip or analog probe), one connector for up to two digital input signals. This model has an internal electronic circuit.

DS-U-2: receptacle for AC adapter, one USB port, one RS485 port (multi-drop), four probe connectors (HygroClip or analog probe), one connector for up to two digital input signals. This model has an internal electronic circuit.

DS-U-4: receptacle for AC adapter, one RJ45 connector (Ethernet), one RS485 port (multi-drop), four probe connectors (HygroClip or analog probe), one connector for up to two digital input signals. This model has an internal electronic circuit.

battery

cover

Battery replacement:

To access the battery, remove the screw shown to the right and open the rubber cover.

The battery is located at the bottom of the instrument.

screw

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DS-PT-2: receptacle for AC adapter, one USB port, one RS485 port (multi-drop networking), four connectors for RTD probe (direct 4-wire connection), one connector for up to two digital input signals. This model has an internal electronic circuit.

All of the above models plug in the same manner into the back of the logger and have the same physical dimensions. The docking station can be used either as a wall mounting bracket (the HygroLog NT can be secured with a user supplied padlock), or as a mechanical adapter to place the HygroLog NT on the optional desk-top stand.

Note: docking station models that have an internal electronic circuit substantially increase the current drawn from the battery and should be generally used with an external AC adapter.

To mount the docking station to a wall, use the two holes shown on the right. The HygroLog NT can then be attached to the docking station as explained below.

To attach the HygroLog NT to the docking station: Place the HygroLog NT on the docking station so as to match the two areas [A]. Press lightly one against the other and secure the assembly with threaded pin [B].

When the docking station is mounted on a wall, a small padlock (not shown) may be put through pin [B] to prevent removal of the HygroLog NT from the docking station.

[A]

[B]

[B]

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Analog probe inputs

When used with the docking station models DS-U-1, DS-U-2 or DS-U-4, the HygroLog NT can accept up to 4 analog probes. For example, an analog pressure probe may used to provide the value of barometric pressure required for the calculation of parameters such as the wet bulb temperature, mixing ratio or enthalpy.

The following restrictions apply to analog probes:

ROTRONIC analog humidity-temperature probes with the standard temperature output signal of 0.5.0 V = -5000C: because the HygroPalm cannot read a negative voltage signal, temperature measurement is generally limited to values above freezing.

Third-party analog probes: single channel probes (one signal), output signal within the range of 0 to 2.5 VDC, supply voltage: 7.6 VDC (direct from the HygroLog NT battery), maximum current consumption: 10 mA.

Resolution is limited by the 10-bit A/D converter used for the analog inputs. This converter provides a theoretical maximum of 1024 counts for an input voltage span of 2.5 VDC. In theory, this gives a resolution of 2.5 / 1024 = 0.00244 V. In practice, it is not possible to get 100% of the counts from an A/D converter and the actual resolution should be about 0.0027 V (typical). For example, if a probe with a temperature signal of 0...1V = 000C is being used, the signal resolution will be about 100 x 1 x 0.0027 = 0.27C

RTD inputs

When used with docking station model DS-PT-2, the HygroLog NT can accept up to 4 RTD probes (direct 4-wire connection).

Digital signal inputs (on / off)

When used with docking station model DS-U-1, DS-U-2, DS-U-4 or DS-PT-2, the HygroLog NT can monitor up to 2 external contacts. Typically this is used to monitor a relay contact, the opening and closing of a door, etc.

Internal Bluetooth transceiver

The HygroLog NT2-D-BT and HygroLog NT3-D-BT are equipped with an internal Bluetooth transceiver. This offers an alternative to using a docking station. The Bluetooth transceiver allows bi-directional wireless communication at distances of up to 9m / 30ft. The Bluetooth transceiver is strictly for one-to-one communications with a PC (no networking). The PC must be also equipped with a Bluetooth transceiver. The Bluetooth transceiver substantially increases the power consumption of the HygroLog NT. When no external power adapter is being used, the HygroLog NT must be activated with the keypad prior to initiating a wireless communication.

The LC display shows when the Bluetooth module is in use.

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Connectors and pin-out diagrams (receptacle)

Note: an adapter cable is required to connect a probe to input 2 or 3 of the HygroLog NT3. Use cable MOK-02-B5 (or similar) for probes with a 5-pin DAT-05 connector. Use cable T7-03-B5 (or similar) for probes with a 7-pin T7 connector.

Remote Mode

Input 1 (HygroClip probe)

Input 3 (HygroClip probe)

Input 2 (HygroClip probe)

Remote Mode

Input 1 (HygroClip probe)

Input 1 (internal probe)

NT1

NT2

NT3

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Depending on the docking station model, the following inputs and connectors are available: Docking Stations with Serial or USB Connector:

Docking Stations with RJ45 (Ethernet) Connector:

Note: an adapter cable is required to connect a probe to inputs 4, 5, 7 and 7 of the docking station. Use cable MOK-02-B5 (or similar) for probes with a 5-pin DAT-05 connector. Use cable T7-03-B5 (or similar) for probes with a 7-pin T7 connector.

Input 5 Probe or RTD

Input 4 Probe or RTD

External Contacts

Input 6 Probe or RTD

Input 7 Probe or RTD

RS-485

12VDC Power (+) center

RS-232 or USB

Input 4 Probe or RTD

RJ45

Input 6 Probe or RTD

Input 5 Probe or RTD

RS-485

External Contacts

Input 7 Probe or RTD

12VDC Power (+) center

- 14 - _____________________________________________________________________________

1: not used 2: power (DC+)3: GND 4: DIO 5: not used

Input 1, 2 and 3 (HygroLog NT2, NT3) - solder side of matching male connector

1

2

3

4

1: RX 2: TX 3: GND

1

2

3

4

5

5

1: DC (+) 2: measurement (+)3: measurement (-)4: DC (-)

Input 4, 5, 6 and 7 (docking stations with HygroClip or analog input: DS-U-1, DS-U-2 and DS-U-4) - solder side of matching male connector

1: analog (+) 2: power (DC+)3: GND 4: DIO 5: not used

Input 4, 5, 6 and 7 (docking stations with RTD input: DS-PT-1, DS-PT-2 and DS-PT-4) - solder side of matching male connector

1

2

3

4

4-wire RTD

Remote Mode (HygroLog NT2 / NT3) - solder side of matching male connector

1

2

3

1

2

3

4

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Operating limits (instrument only)

Models without display:

-100C with the factory supplied alkaline battery

-300C with a lithium battery or an external AC adapter

Models with display:

-100C with the factory supplied alkaline battery

-100C with a lithium battery or an external AC adapter

The HygroClip probes have generally wider operating limits (see individual probe specifications).

1: 485 (-) 2: 485 (+) 3: GND (see note)

4: DC + (see note)

Version 1

1

2

3

4

Note: an internal pull-down resistor sets each input to 0 when the contact is open.

External contacts (docking station) - solder side of matching male connector

1

2

3

4

1: 485 (-) 2: 485 (+) 3: GND (optional)

RS-485 port (docking station) - solder side of matching male connector

1

2

3

1: + 3.5 VDC2: Input 1 3: Input 2 4: GND

1

2

GND: not used (eventually use for a shield)

+3.5 V

RS-232 port (docking station) - solder side of matching male connector

Pin #

RS-232

2

TX

3

RX

5

GND

Version 2

Note: use pins 3 and 4 to power multi-dropped instruments with a single external 12 VDC power supply with adequate mA rating. Pin 4 and the 12VDC power jack of the docking station are not connected.

1

5

6

9

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Software functions

Calculated parameter

Using the HW4 software, the HygroLog NT can be set to compute for each probe one of the following psychrometric parameters.

Dew point (Dp)

Frost point (Fp)

Wet bulb temperature (Tw)

Enthalpy (H)

Vapor concentration (Dv)

Specific humidity (Q)

Mixing ratio by weight (R)

Vapor concentration at saturation (Dvs)

Vapor partial pressure (E)

Vapor saturation pressure (Ew)

A different parameter can be associated with each individual probe:

Note: depending on whether dew point or frost point was selected, both the HygroLog NT and HW4 will display either the symbol Dp or the symbol Fp for values below freezing. The symbol Fp indicates that the value is a frost point as opposed to being a dew point. Regardless of the dew point / frost point selection, the symbol Dp is always displayed for values above freezing.

Some of the above parameters require barometric pressure as an input. If an analog pressure probe is connected to one of the HygroLog NT inputs, the logger can be set to use the measurement from this probe. When no pressure probe is being used, a fixed pressure value can be used. This value can be specified as part of the HygroLog NT settings.

Trend indicators

See also: Main operating modes and measurement interval

When the trend indicator function is enabled, a symbol appears on the left side of the LC display, on the line corresponding to each measured or calculated value. An up arrow denotes a rising value and a down arrow denotes a decreasing value. Both arrows denote a stable value.

The trend of a parameter is evaluated by comparing successive averages made of 6 values each. With the shortest possible measurement interval of 5 seconds, each average covers a time period of 30 seconds and the first indication of a trend is available after one minute. Subsequently, the trend is evaluated and updated every 30 seconds. With a longer measurement interval, each average is computed over a longer period of time (always using 6 values) and the trend is also updated over longer intervals of time.

For any measured or calculated parameter, the trend indicator shows a stable condition when the absolute value of the difference between two successive averages is < 0.02.

Alarm function

Using the HW4 software, both a high and a low alarm value can be associated with the humidity, temperature and calculated parameter of each probe input, A hysteresis value can also be entered for each parameter. This value is used for both the low and the high alarm conditions.

The HygroLog NT has a red LED which can be set with HW4 to flash whenever the value of any parameter corresponds to an alarm condition. The LED can be set to flash only as long as the

- 17 - _____________________________________________________________________________

alarm condition exits or it can be set to provide a durable alarm and, in this case, it will to keep flashing until the alarm is reset.

The HygroLog NT can also be set with HW4 to beep for 5 seconds when there is an alarm condition. The HygroLog NT will beep only once, when the condition occurs.

Log files do not record the existence of an alarm condition. However, when the contents of a log file are viewed as a data table with the HW4 software, values that correspond to an alarm condition are printed over a red background, based on the alarm settings that HW4 downloaded from the logger.

Data logging

Data logging requires that a flash memory card be inserted inside the logger. Using HW4, log files can be set to one of the following formats:

HW4 binary format [LOG]: files in this format are encoded and can be opened only with the ROTRONIC HW4 software. HW4 does not allow any manipulation / alteration of the data and requires a password to log in. Should the file be somehow modified, HW4 will give a warning that the file is not an original.

Text file format [XLS]: in principle, files in this format can be opened with any text editor and / or imported into Microsoft Excel.

The log file format is a global setting of the flash memory card (changing this setting requires the HW4 software). At any given time, the card records data from all inputs in either one format or the other. Files of different formats can co-exist in the flash memory card. Binary files (protected) use substantially less memory space than text files (unprotected).

The logging function is independently activated for each individual input. The HygroLog NT creates a separate file for each input that is to be recorded. Multiple inputs cannot be recorded to the same file. The HygroLog NT automatically generates each file name. A file name consists of 8 digits followed by the extension LOG or XLS. The first 4 digits are the same as the last 4 digits of the logger serial number, the 5th digit is the same as the input number and the last 3 digits are a number between 000 and 999 used to differentiate log files created for the same input. The last number that was created is retained in the non-volatile EEPROM and is updated whenever a new file is created for the input. When the number reaches 999, the next update will reset it to 000.

All files are located in the root directory of the flash memory card, including the logger event file and the logger configuration file. Regardless of the memory card capacity, the root directory is limited to a maximum of 500 files. This means that the memory card can hold a maximum of 498 log files, and that a card with this amount of files is considered to be full, even if all the memory has not been used.

Using HW4, the following log settings can be defined individually for each input:

Start date and time

Stop date and time

Log interval (minimum 5 seconds)

Measured values and computed parameter, or any parameter combination

User custom text (used for the log file header)

User name, HW4-ID, HW4 Serial Number

Automatic creation of a new file after 200,000 data points or at the end of each day, week or month

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Note: unlimited logging (loop mode logging) is not possible. Logging stops automatically when the flash memory card is full. Prior to logging, the user may use HW4 to check the amount of free memory, and verify that there is enough room available.

If the flash memory card is removed when logging is active, the HygroLog NT will stop logging until a new card is inserted. Unless the stop date and time have been reached, logging will start again under the next available file name when a new card is inserted.

Warning: removing the memory card while logging is active may result in a corrupted log file and in loss of data.

Logging can be started immediately for any individual input from the keypad of the HygroLog NT. A deferred start can only be programmed with HW4. The green LED of the HygroLog NT can be set to flash when the instrument is recording data. To conserve battery power, you may want to do this only when an external power source is being used.

Logging can be immediately stopped for any individual input directly from the keypad. With HW4, logging can be stopped either immediately or at a future date and time for any individual input or for all inputs.

When logging is ended, the HygroLog NT returns to the measuring mode.

Display-Sleep function

This function can be enabled and configured only with the HW4 software.

Using the Display Sleep function can substantially extend the lifetime of the battery. When the Display Sleep function is active, the LC display of the HygroLog NT stays blank. The Display Sleep function is effective both in the measure and in the record mode.

The display of the HygroLog NT can be set to be always on. It can also be set to automatically go blank after 30 seconds, 1, 5, 10 or 20 minutes when no key is being pressed or when there is no communication with a PC. If the HygroClip NT was in the function menu at the time the display goes blank, it automatically exits the menu.

The HygroLog suspends the Display Sleep function whenever a key is pressed or when it receives a communication request (for example from a PC). When the display comes up again, it shows by default the measurements from the probe that was selected last.

When the HygroLog NT is connected to a PC and HW4 is running; pay attention to the monitoring interval defined in HW4 Global Settings. A short monitoring interval may override the display sleep function by constantly interrogating the HygroLog NT and cause the battery life time to be sharply reduced.

Compliance with FDA 21CFR Part II and GAMP

When used together with the ROTRONIC HW4 software Professional Edition; the HygroLog NT complies with the FDA / GAMP requirements regarding electronic records and electronic signatures.

HW4 is designed to keep track of logger configuration changes, programming changes and of any probe adjustment. HW4 also keeps track of user events (main operations performed by each user) and self-events (software problems). The records generated by HW4 are protected, have an electronic signature and can be cross referenced one with the other.

IMPORTANT: In order to comply with the FDA / GAMP requirements, be sure to configure both the HygroLog NT and HW4 as follows (use HW4 to this purpose):

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  1. When using HW4 and the HygroLog NT for the first time, create at least one user with administrator rights and password (HW4 Users and Passwords). After creating one or more users, be sure to log as one of the users (HW4 - Users and Passwords - Change User). Doing this enables the HygroLog NT to maintain a record of any change made by any user.
  2. Enable HW4 to monitor electronic signatures and user events (HW4 - Global Settings - Events)
  3. Enable HW4 to monitor system events (HW4 - Global Settings - General)
  4. Enable protocols in HW4 (HW4 - Device Manager - Device Manager Settings)
  5. If the HygroLog NT has a display and keypad, disable the MENU key (HW4 - Device Manager - Keypad).

The HygroLog NT keeps track of the last 170 operations, events and configuration changes. This data is retained in the internal non volatile EEPROM memory of the HygroLog NT and is also automatically written to the flash memory card in a special event file (file extension .EVT). This protected file can be opened with HW4 and cross referenced with the other HW4 record files.

Examples of events monitored by the HygroLog NT:

Log function programming

Log function start

Log function stop

Log function disabled because there is no memory card in the logger

Probe adjustment

Removal and installation of the flash memory card

Flash memory card is full

Start-up (Boot)

Watchdog timeout

Logger configuration changes

Alarm condition detected

Beeper / Led

Battery

Change in the calculated parameter

Measured values configuration

Optional inputs

RS-232 connection

Network address change (RS-485)

Language change

Trend on / off

User custom text

Time and date change

Insertion of the logger in the docking station

Low Battery - beginning / end

Accumulator charge - beginning / end

Connection / removal of an external power adapter

Use of protected commands

Access to the flash memory card files

File deletion from the flash memory card

Transmission of SMS

Activation of the Bluetooth transceiver

Instrument power up / power down

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OPERATION

Required accessories / equipment

Models without display/keypad and without Bluetooth transceiver:

The following accessories are required in order to be able to use the logger:

Any model of docking station (except model DS-NT1)

Connecting cable docking station to PC

PC with the ROTRONIC HW4 software installed

Models with display/keypad and without Bluetooth transceiver:

In principle, these models can be used without any accessory. However, accessing all of the product functions and changing some important settings such as the date and time requires the same accessories as for the models without display.

Note: the HygroLog NT3-D can be used to read and to program the HygroLog NT3 (see Remote Mode). The two instruments must be connected together, using the "Remote" connector and the appropriate cable.

Models with display/keypad and with Bluetooth transceiver:

PC with the ROTRONIC HW4 software installed

Bluetooth transceiver connected to PC

HW4 Software Requirements

Note: a full description of HW4 is available in a separate manual (HW4Instr.pdf). This document can be downloaded from our web site.

The following are the minimum values required to install and run HW4 on a computer. It is highly recommended to exceed these values.

Processor: Pentium II, 450 MHz

RAM: 128 MB

Available hard disk space: 50 MB

Monitor: SVGA, 1024 x 768, 256 colors

Ports: one free serial (COM) port or one free USB port

Operating System compatibility:

Windows 98, XP, NT4 with SP 6a or higher

Windows 2000 with SP 2 or higher

Windows Server 2003

HW4 was written for the Microsoft .NET framework and requires this framework to be installed on the computer.

The .NET framework offers significant improvements in the areas of networking and user security. When new software is being installed, the .NET framework also eliminates the potential problem of conflicting dynamic library files (DLL). According to Microsoft, the .NET framework will be used by all future Microsoft operating systems.

- 21 - _____________________________________________________________________________

Getting started

Insert a 9V alkaline battery in the HygroLog NT as explained under Hardware Description - Power. To conserve battery power, models with a display are shipped with the Display Sleep function enabled. With this function enabled and when logging is not active, the logger just keeps track of the date and time and uses very little battery power. Press any key on the keypad to temporarily suspend the Display Sleep function. The HW4 software is required to either disable the Display Sleep function or to reconfigure this function. See Display Sleep function under Software Functions

Display and keypad

Depending on the model, the HygroLog NT is equipped with a display and a keypad.

Display

The HygroLog NT uses a monochrome graphic LC display with a resolution of 128 x 88 pixels. The active area of the display measures 48 x 33 mm. The normal function of the display is to show the most recent measured values, one at a time. The display is also used to navigate the Function Menu of the HygroLog NT.

IMPORTANT: Using the HW4 software, the display can be set to automatically go blank after a specific time interval when there is no keypad activity and when there is no communication over the UART interface. This serves the purpose of conserving battery power. The display comes up again when any key is pressed or when a communication is initiated. See Software Functions, Display Sleep function.

Keypad

The keypad of the HygroLog NT is comprised of the following keys:

MENU: press this key to open the function menu, to go back one menu level or to exit the menu.

ENTER: this key has two functions: If the function menu is not open, press this key to switch the display between showing the measured values, date, time and probe number and showing the measured values and calculated parameter (if HW4 was used to associate a calculated parameter with the probe). If the function menu is open, press this key to select a menu item and/or to confirm a value or setting.

UP: the up-arrow key has two functions: If the function menu is not open, the up-arrow key is used to switch the display between the different probe inputs. If the function menu is open, the up-arrow key is used to navigate the function menu and/or to change the setting or value of a menu function.

DOWN: the down-arrow key has a similar functionality as the up-arrow key:

IMPORTANT: the HW4 software can be used to disable either the MENU key or the entire keypad. If the keypad does not work, you should check the configuration of the HygroLog NT with

- 22 - _____________________________________________________________________________

HW4. Disabling the MENU key prevents unauthorized changes to the configuration of the HygroLog NT and also prevents any probe adjustment. Compliance with FDA / GAMP requires the MENU key to be disabled.

Display modes

The display shows the measurement data for one input at a time. Values shown on the display are updated according a refresh interval that can be set with the HW4 software. Use the UP or the DOWN arrow key to switch between inputs. Two different modes are available to display the measurement data. Use the ENTER key to toggle between the two modes:

Display Mode 1: Measured value 1 (usually relative humidity Measured value 2 (usually temperature) Date and time Probe / input description (as entered with HW4 when configuring the HygroLog NT) Note: the bottom line of the display remains empty if no description was entered for the probe or input.

Display Mode 2: Measured value 1 (usually relative humidity) Measured value 2 (usually temperature) Calculated parameter (as selected with HW4 when configuring the HygroLog NT) Note: in this mode, the last line of the display shows the symbols --.- when no calculated parameter was selected with HW4.

In both modes, a trend indicator appears to the left of each measured value when the trend function is enabled. See Software Functions, Trend Indicators.

Operating modes and measurement interval

The HygroLog NT has two main operating modes: measure and record.

Measure mode: the HygroLog NT defaults to this mode when it is not recording any data. What happens in this mode depends on whether or not the HygroLog NT is communicating with a PC. When there is no communication with a PC, the model without display is in a low power consumption mode and just keeps track of the date and time. The model with display behaves differently, depending on whether or not the Display Sleep function is enabled (see Software Functions). If the function is disabled (display always on), measurements take place at intervals of time corresponding to the display refresh interval that was specified with HW4 when configuring the data logger. When the display goes blank because the Display Sleep function is enabled, the model with display behaves in the same manner as the model without display.

When communicating with a PC (HW4 set to monitor all devices connected to the PC), the sampling rate (monitoring time interval) is a setting that is defined from within HW4. The shortest time interval is 5 seconds. In the case of a model without display, the measurement interval is the same as the HW4 monitoring interval. In the case of a model with display, the measurement interval is the shortest of the monitoring interval and display refresh interval.

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Record mode: the model without display measures data according to the log interval that was specified for each individual input. The shortest log interval is 5 seconds. The log interval and the measurement interval are the same. In the case of the model with display, the measurement interval is the shortest of the log interval and display refresh interval. If the Display Sleep function is active, the measurement interval is by default the same as the log interval.

Settings and functions

Settings and functions accessible both from the Keypad and HW4

Note: access to the following functions from the keypad can be prevented by disabling the MENU key when configuring the HygroLog NT with the HW4 software.

The following settings can be entered / programmed from either the Keypad or with the HW4 software:

Display mode: measured and calculated values or measured values, date, time and probe / input description

Unit System (metric or English) - configuring some English units such as pressure requires HW4

Trend indicators on / off

Symbol used for humidity

Contrast of the LC display

Decimal resolution of the display

Cancel (reset) a durable alarm

Date

Time

Logging functions (set individually for each input, cannot be scheduled for a future date / time): - Start logging - Stop logging - Log Interval

View recorded data (in table form only)

Probe adjustment functions, one probe at a time (HygroClip probes only)

Settings and functions accessible only with HW4

User specific information (retained in the logger)

Custom text associated with the logger (30-character description)

Network address of the logger

Language used in the logger menu

Date and time format / separators

Decimal symbol

Pressure unit (English) and mixed unit systems

Individual input settings: - Probe / input description (maximum 12 characters) - Parameter to be calculated for an individual input - Barometric pressure: fixed value or read from an input - Value to be used as fixed barometric pressure - Alarm settings for humidity, temperature and calculated parameter

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Display settings: - Display refresh rate - Turn display off after xx minutes - Alternate the display - automatically show all inputs one after the other

Keypad disable functions: - Disable entire keypad - Disable only the MENU key

Type of internal power source: standard battery or rechargeable battery

Display Sleep function - enable / disable

LED and Sound settings

Programming of the optional inputs

Log file format (global setting of the flash memory card)

Logging functions (set individually for each input, can be scheduled for a future date / time): - Start date and time - Stop date and time - Log measured values and computed parameter, or any combination - Custom text (used for the log file header - up to 43 characters) - User name, HW4-ID, HW4-serial number (used for the log file header) - Automatic creation of a new file after 200,000 data points or at the end of each day, week or month

Global programming of the log function of all inputs

Data downloading (from the logger) and associated functions

Simultaneous adjustment of several probes (HygroClip probes only)

Internal Function menu

Log data

This menu item is used to immediately start or stop recording data from each individual input. Log operations that are set in the future and / or settings that apply globally to all probe inputs cannot be programmed from here. When data logging is not active, selecting this menu item displays the following:

Probe: probe name (custom name specified by user) To change the probe, use the up or down arrow key to highlight probe and press ENTER. Use the arrow keys to change the probe and press ENTER to confirm the selection.

Interval: log interval in HH:mm:ss

START LOGGING: record data immediately

EXIT: exit the log data function

When data logging is either in progress or has been scheduled at a future time, the third menu item (START LOGGING) changes to:

STOP LOGGING: stop recording data immediately

View Data

This menu item is used to view on the LC display data from the most recent log file for the selected probe (older log files cannot be opened with this menu item).

Probe: probe name (custom name specified by user) To change the probe, use the up or down arrow key to highlight probe and press ENTER. Use the arrow keys to change the probe and press ENTER to confirm the selection.

[OPEN]: select and press ENTER to review the data

[EXIT]: select and press ENTER to exit this menu item

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If there is no log file in the flash memory card for the selected probe, the message "Log file not found" appears. When there is at least one log file for the selected probe, data from the most recent file is presented in table form, showing 7 lines of data at a time. Each line corresponds to the log interval that was in effect when the data was recorded. The date and time corresponding to line 4 (this line is always highlighted) are displayed at the bottom of the display.

The first 7 data points of the log file are presented first. Press the UP arrow key to view the next 7 data points. Press the DOWN arrow key to view again the previous data points. Both the date and time change at the bottom of the display as the arrow keys are pressed until the beginning or end of the log file has been reached.

For a faster data review, press the ENTER key. The scrolling step is displayed at the top of the display and changes each time that the ENTER key is pressed. For example, with the scrolling step set to 7 and a log interval of 30 seconds, time moves in increments of 3 minutes and 30 seconds (7 x 30 seconds) each time that one of the arrow keys is being pressed.

Press the MENU key to exit the data table.

Adjust (except HygroLog NT1)

This menu item can be used to adjust (calibrate) any ROTRONIC HygroClip digital probe that is connected to the HygroLog NT. The adjust function cannot be used with other types of probe.

IMPORTANT: see the instructions provided under "Adjusting a HygroClip probe" before using this function.

Probe: probe name (custom name specified by user) To change the probe, use the up or down arrow key to highlight probe and press ENTER. Use the arrow keys to change the probe and press ENTER to confirm the selection.

Adjust: parameter to be adjusted (humidity, humidity RHS or temperature)

Mode: adjustment type (single- of multi-point)

RefValue: reference value against which the probe will be adjusted

ADJUST: adjust the probe

EXIT: exit the adjust function

Note: next to the word "current", the bottom of the display shows the value of the parameter to be adjusted at the time the parameter to be adjusted was selected. This value is not updated while the Adjust menu item is active (exit Adjust to update the value).

Settings

This menu item allows both to review and to modify some of the settings of the HygroLog NT and to cancel (reset) a permanent alarm condition.

Trend: turn trend indicators on or off.

Units: use Metric or English unit system

H.Symbol: select the symbol to be used for relative humidity RH, Aw, HR, rh, rF

Contrast: contrast setting, 0% is the minimum and 100% is the maximum

Decimals: decimal resolution of the display 1 or 2.

Date

Time

Cancel Alarm - cancels a durable alarm

Exit

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To change a setting:

- Use the UP or DOWN key to highlight the setting to be changed. The entire line corresponding

to the setting is highlighted.

- Press on the ENTER key to select the setting. Only the value of the setting is highlighted.

- Use the UP or DOWN key to review the available setting values

- When the desired value is displayed, press on the ENTER key

- The entire line corresponding to the setting is highlighted again.

To cancel a durable alarm:

- Use the UP or DOWN key to highlight the line that says [Cancel Alarm].

- Press on the ENTER key. The line text changes to [Alarm Cancelled]

Instrument

This menu item provides information on the HygroLog NT. No changes can be made from within this menu item.

Release: firmware release

S/N: serial number

Address (network address of the logger)

Baud rate: serial transmission rate

Battery: % remaining battery capacity (automatically reset to 100% after replacing the battery)

Ext. Power: No (not connected), Yes (connected)

Name: custom name specified by the user for the logger (max. 30 characters)

Press the ENTER key to exit this menu item

Inputs

This menu item provides information on the inputs of the HygroLog NT and optional docking station. No changes can be made from within this menu item. Information is shown one input at a time. The input number appears on the top of the screen and can be changed with the up-arrow or with the down arrow key.

Status: Connected / Not Detected - shows if a probe is connected or not

Name: custom name specified by the user for the input (max. 12 characters)

Release: firmware release of the probe (HygroClip probes only)

S/N: serial number of the probe (HygroClip probes only)

Logging: status of the logging function for the input being displayed

- scheduled: data from the input is scheduled to be logged at a future time - active: data from the input is being logged - inactive: no input data is being logged or scheduled to be logged

Docking Station

This menu item provides information on any docking station with internal electronics that is attached to the HygroLog NT. No changes can be made from within this menu item.

Status: Connected / Not Detected

Release: firmware release of the docking station

S/N: serial number of the docking station

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Remote Mode (HygroLog NT2 / NT3)

A HygroLog NT2-D or NT3-D (with display and keypad) can be used to read the measurements and access the function menu of a HygroLog NT2 or NT3 (without display and keypad).

To use the Remote Mode, the two instruments must be connected with a special cable that plugs into the Remote Mode connector of each unit (see Accessories). The function is activated from the menu of the unit with the display and keypad. When the function is active, the unit with display and keypad displays the measurements and the function menu of the other unit. The remote mode is disabled when the (fictitious) MENU key of the unit without display and keypad has been blocked out during configuration with HW4 (FDA / GAMP requirement).

Warnings and Useful tips

Do not attempt to charge a regular battery: When using a regular battery, configure the logger with HW4 so as to disable the internal battery charge function of the logger. Trying to recharge a regular battery is potentially dangerous.

Date and Time Format: Prior to using your logger for the first time, be sure to verify the following configuration settings: date format (including separator), time format (including separator) and decimal separator. In order to be able to read log files on a PC, these settings must be identical to the settings of the PC operating system. If necessary, use HW4 to re-configure your logger.

Conserving Battery Power: When no external AC adapter is connected, use the HW4 software to set the display to automatically go blank after a specific time interval when there is no keypad activity or communication over the UART interface.

Set both the display refresh rate and the log interval to the highest values compatible with your application.

Avoid using a docking station with internal electronics without using an AC adapter.

Do not connect several probes to the HygroLog NT without using an AC adapter.

Internal Probe (Input 1):

For a faster response, use the probe in the extended position.

Compliance with FDA / GAMP: Use the HW4 software to disable either the MENU key or the entire keypad. Disabling the MENU key prevents unauthorized changes to the configuration of the HygroLog NT and also prevents any probe adjustment.

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ADJUSTING A HYGROCLIP PROBE

Single Point

Note: this function is not available with the HygroLog NT1

Definition

The Single-Point function permits to do a 1-point adjustment (temperature or humidity) of a ROTRONIC HygroClip digital probe against a known reference environment. This function is limited to a simple offset adjustment that is applied across the entire measuring range.

Warning: a 1-point adjustment is no substitute for a full calibration (2 or more points). Doing a 1-point adjustment can improve accuracy over a narrow range of conditions but may also be detrimental to accuracy at other conditions.

Procedure

IMPORTANT: always adjust temperature first (if temperature needs to be adjusted)

Wait for the probe to be at equilibrium before using the ADJUST function.

Use the UP or DOWN key to highlight any menu item. Press on the ENTER key to select the menu item. Only the value of the item is highlighted. Use the UP or DOWN key to review the available choices or to change a numerical value. When the desired selection or value is displayed, press on the ENTER key. The entire line corresponding to the menu item is highlighted again.

Make the appropriate selections from the ADJUST menu:

Probe: name of the probe to be adjusted (custom name specified by user) To change the probe, use the up or down arrow key to highlight probe and press ENTER. Use the arrow keys to change the probe and press ENTER to confirm the selection.

Adjust: select here the parameter to be adjusted Humidity: humidity adjustment against a stable environment of known value. Humi RHS: humidity adjustment against a ROTRONIC certified standard 1) Temperature: temperature adjustment against a stable environment of known value. 1) For adjusting humidity, ROTRONIC offers convenient, certified humidity standards to generate known humidity values (see separate probe calibration manual).

Mode: select Single Point

RefValue: Use the UP or DOWN key to change the numerical value of the reference to be used for the adjustment. For a faster change of the numerical value, keep the key pressed down. If using a ROTRONIC humidity standard (Humi RHS), use the mean value (at 23C) written on the certificate supplied with the standard. Note: in the RHS mode, the software automatically compensates for the effect of temperature on the humidity standard. No additional correction is required.

ADJUST: highlight this menu item and press on ENTER to do the adjustment

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EXIT: highlight this menu item and press on ENTER to exit the ADJUST function

The bottom of the display shows the word "Current" and the value read by the probe at the time the ENTER key was pressed

Note: you can exit the ADJUST function at any time (without adjusting the probe) by pressing the MENU key.

Multi-Point

Note: this function is not available with the HygroLog NT1

Definition

The Multi-point function permits the full calibration of a ROTRONIC HygroClip digital probe against a known reference environment. This function is designed to permit calibration at 2 temperature values and at up to 4 relative humidity values.

Procedure

IMPORTANT: always adjust temperature first (if temperature needs to be adjusted)

Wait for the probe to be at equilibrium before using the ADJUST function.

Use the UP or the DOWN key to highlight any menu item. Press on the ENTER key to select the menu item. Only the value of the item is highlighted. Use the UP or DOWN key to review the available choices or to change a numerical value. When the desired selection or value is displayed, press on the ENTER key. The entire line corresponding to the menu item is highlighted again.

Make the appropriate selections from the ADJUST menu:

Probe: name of the probe to be adjusted (custom name specified by user). To select a different probe, use the up or down arrow key to highlight probe and press ENTER. Use the arrow keys to change the probe and press ENTER to confirm the selection.

Adjust: select here the parameter to be adjusted Humidity: humidity adjustment against a stable environment of known value. Humi RHS: humidity adjustment against a ROTRONIC certified standard 1) Temperature: temperature adjustment against a stable environment of known value. 1) For adjusting humidity, ROTRONIC offers convenient, certified humidity standards to generate known humidity values (see separate probe calibration manual).

Mode: select MultiPoint

RefValue: Use the UP or the DOWN key to change the numerical value of the reference to be used for the adjustment. For a faster change of the numerical value, keep the key pressed down. If using a ROTRONIC humidity standard (Humi RHS), use the mean value (at 23C) written on the certificate supplied with the standard. Note: in the RHS mode, the software automatically compensates for the effect of temperature on the humidity standard. No additional correction is required.

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When using the multi-point function, please observe the following instructions: When calibrating temperature (2 points), always calibrate at the low value first. The instrument is programmed to use the low temperature value to compute the offset and the high temperature value to compute the gain. Temperature low < 70 C (158F) : used to compute the calibration offset Temperature high 70 C (158 F) : used to compute the calibration gain For best accuracy, we recommend using a low value close to 20C (68F). Preferably, the difference between high and low should be at least 50 C (90 F) When calibrating relative humidity (2, 3 or 4 points) with the ROTRONIC humidity standards (Humi RHS), always follow the sequence 35 %RH, 80 %RH, 10 %RH and 0.5 %RH. When using a reference other than the ROTRONIC humidity standards, use reference conditions that are within the following brackets and observe the sequence: >25 %RH≤55 %RH 1) : used to compute the calibration offset >55 %RH 1) : used to compute the calibration gain >1 %RH≤25 %RH : sensor linearity adjustment 1 %RH : sensor linearity adjustment The HygroLog NT is programmed to automatically recognize these brackets. 1) For best accuracy, we recommend using values close to 35 %RH and 80 %RH

ADJUST: highlight this menu item and press on ENTER to do the adjustment

EXIT: highlight this menu item and press on ENTER to exit the ADJUST function

The bottom of the display shows the word "Current" and the value read by the probe at the time the ENTER key was pressed

Note: you can exit the ADJUST function at any time (without adjusting the probe) by pressing the MENU key.

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NETWORKING

Networking the HygroLog NT requires the use of a docking station (any model other than the DS-NT1). Depending on the model of docking station, the following is available to connect the HygroLog NT either to a PC or to an Ethernet LAN:

RS-232 (serial) port

USB port

RJ45 connector (Ethernet)

HW4 accepts a mix of Ethernet (TCP/IP), RS-232 and USB connections. All connections are detected automatically by HW4.

With the exception of model DS-NT1, all models of docking station also feature an RS-485 connector. When the number of available ports (serial, USB or Ethernet) is limited, this can be used to connect together up to 64 HygroLog NT in a multi-dropped arrangement. In principle, an unlimited number of such networks can be monitored with the HW4 software, but each RS-485 multi-drop network is limited to 64 HygroLog NT and docking stations. Any HygroLog NT can be used either as a slave or a master, without special configuration. The master is automatically the device that is directly connected to the PC by means of a COM or USB port or the device that is directly connected to the Local Area Network (Ethernet). The RS485 wiring can be done with a twisted pair (2-wire, telephone type) and wall mounted RJ45 receptacles. No shielded cable and no terminator should be required. Be sure to observe the polarity for each connection.

Automatic RS-485 Address Generation: the RS-485 address of the HygroLog NT is used to differentiate instruments that are connected within a multi-dropped RS-485 sub-network. This address is part of the HygroLog NT communications protocol. Instruments that are directly connected to the PC or to an Ethernet network can share the same RS-485 address. The factory default for the RS-485 is 00. HW4 automatically changes the RS-485 address from 00 to 01 for any HygroLog NT that is directly connected for the first time to the PC (master). As a result, all masters have the same RS-485 network address (01). In the situation where a multi-drop RS-485 network is also detected, HW4 automatically gives each slave in the multi-drop a unique network address ranging from 02 to 64. The same address range (02 to 64) is used again when there is more than one multi-drop RS485 network.

In the case where HW4 will not be used to monitor the devices on the RS-485 network, HW4 should be used to manually give each device a unique network address prior to connecting to the RS-485 multi-drop network. You may also want to use HW4 to give each HygroLog NT a descriptive name for easier identification.

Docking station with RS232 or USB port

The number of docking stations with RS-232 or USB port that can be directly connected to a PC depends on the number of physical COM ports and USB ports available on the PC.

RS232: 3 wires (including ground wire) RS485: 2 wires

RS232 or USB

Address 2

PC (HW4)

Address 64

Address 1

COM Port

or

USB port

RS485

RS485

RS485

up to 12m (39 ft)

Multi-drop: up to 1000m

slave

slave

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Using the RS485 connector, a maximum of 64 HygroLog NT with docking station can be connected directly or indirectly to each RS-232 or USB port (multi-dropped network). The RS232 connection between the first device and the PC requires 3 wires: RX, TX and GND 1). Without a signal booster, the maximum cable length is limited to 12 m (39 ft).

1) GND is internally connected to the power ground of the device

Docking station with RJ45 connector (Ethernet)

In principle, using a docking station with RJ45 connector allows an unlimited number of HygroLog NT to be individually connected either to a Local Area Network (Ethernet) or to a remote network by way of the Internet. Both cases are compatible with the HW4 software.

IMPORTANT:

If you change an instrument that was previously connected from being a master (direct connection the PC or direct Ethernet connection) to being an RS-485 slave, be sure to change the RS address of the instrument to 00 before establishing the RS-485 connection (same address as a new instrument from the factory). Not doing so may prevent HW4 from detecting the instrument. After detecting the instrument, HW4 will automatically change the RS address to 02 or higher. In all other situations, do not use address 00 as this address number will eventually be changed by HW4.

RS485

IP Address 1

IP Address 2

RS485

RS485

RS485

IP Address n

Address 1

Address 1

Address 1

Network Interface Card

Multi-drop:

up to 1000m (3300 ft)

PC (HW4)

RS485: 2 wires

RS485

Address 2

Ethernet LAN (TCP/IP)

Address 64

Note: each docking station connected to the LAN should have a unique IP address. Within each RS485 multi-drop, each docking station should have a unique network address (between 1 and 64).

slave

slave

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SPECIFICATIONS

Model

HygroLog NT1

HygroLog NT2

HygroLog NT3

Internal Humidity / Temperature probe

Integral probe

Plug-in ROTRONIC HygroClip S

Operating limits electronics

Humidity

000 %RH

Temperature

-300 C (-2258F) / -100 C (1440F) with display

Operating limits battery

Alkaline battery

-1050 C (1422F)

Lithium battery

-3070 C (-22158F)

Measuring range

Internal probe

000 %RH, same temperature limits as logger

External probes

See probe specifications HygroClip probes are available for temperatures within the range of -5000C / -5892F

Accuracy at 23C (internal probe)

2 %RH 0.4C

1.5 %RH 0.2C

Interface

Logger

UART

UART Bluetooth (option)

Docking station

RS232 or USB , RS485

Internal Power supply

9V battery 500 mAh

External power supply

Via docking station (allows use of a rechargeable battery)

Battery lifetime

> 1 year - w/o display, 1 probe, 15 min. log interval

Display

Graphic LC display (option)

Event logging

Last 170 events such as configuration changes, alarm, etc.

Internal Menu

Simplified functions, viewing of logged data

Internal probe adjustment

N/A

Direct from internal menu

External probe adjustment

Direct from internal menu (HygroClip probes only)

Probe inputs

Logger

Internal probe only

Internal probe + 2 external HygroClip probes

Docking station

Up to 4 probes (HygroClip probes, analog probes or RTD probes (Pt100) and 2 digital signals (depends on model)

Plug-in Memory Card

Compact flash memory card (16 MB standard - up to 1 GB)

Internal memory

EEPROM

Memory capacity (16 MB compact card)

400,000 data points in text file format 752,000 data points in encoded binary format (protected)

Log interval

Programmable from 5 sec to 24 hours

Log mode

Start / Stop, with programmable date and time

Alarm function

Optical and acoustical - programmable

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Housing

ABS, protection grade IP65

Logger dimensions

Logger

155 x 106 x 37 mm

Docking station

110 x 70 x 37 mm

Weight

Logger

about 300 g

Docking station

about 175 g

NT desk stand

About 350 g

Conformance

FDA CFR 21 / 11 / GAMP4

Anti-theft protection

Use docking station

Docking Station

Dimensions in mm

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ACCESSORIES

Order Code

Description

HW4-E

HW4 Edition software (CD ROM)

HW4-P

HW4 Professional software (CD ROM)

MOK-02-DAT05

Extension cable for HygroClip probes with DAT05 connector (use for input 1 of the HygroLog NT2 / NT3). Cable length 2 meter (6.5 ft)

MOK-02-B5

Adapter cable for HygroClip probes with DAT05 connector (use for inputs 2 to 7). Cable length 2 meter (6.5 ft)

T7-03-B5

Adapter cable for HygroClip probes with T7 connector (use for inputs 2 to 7). Cable length 3 meter (9.8 ft)

DS-NT1

Basic docking station - provides a receptacle to connect an AC adapter to power the HygroLog NT

DS-NT2

Same as DS-NT1 plus one serial port (RS232) and one RS485 port

DS-NT3

Same as DS-NT1 plus one USB port and one RS485 port

DS-NT4

Same as DS-NT1 plus one RJ45 connector (Ethernet) and one RS485 port

DS-U-1

Same as DS-NT2 plus four probe connectors (HygroClip or analog probe) and one connector for up to two digital input signals.

DS-U-2

Same as DS-NT3 plus four probe connectors (HygroClip or analog probe) and one connector for up to two digital input signals.

DS-U-4

Same as DS-NT4 plus four probe connectors (HygroClip or analog probe) and one connector for up to two digital input signals.

DS-PT-2

Same as DS-NT3 plus four connectors for RTD probe (direct 4-wire connection) and one connector for up to two digital input signals.

NT-Desk

Desktop stand for HygroLog NT with docking station

AC1211

AC adapter 12VDC / 200mA, includes adapter for US receptacles

11.01.6218

Data cable RS232 - docking station to PC (length 1.8 m / 5.9 ft)

2/11/8818

Data cable USB type A-B - docking station to PC (length 1.8 m / 5.9 ft)

AC1614-02

RS-485 cable with 3-pin connector and tinned ends. Suitable for connecting to a terminal box. Length 2 meter / 6.5 ft.

AC-NT-REM

Remote mode cable for HygroLog NT3

AC-NT-BT

Bluetooth transceiver, connects to USB port on PC

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Order Code

Description

AC-NT16MB

Compact flash memory card 16 MB

AC-NT32MB

Compact flash memory card 32 MB

AC-NT64MB

Compact flash memory card 64 MB

15.08.6212

Flash card reader, incl. USB cable and driver

 

COMMUNICATIONS PROTOCOL

For customers who for any reason cannot use the HW4 software a description of the HygroLog NT / docking station communications protocol is available in a separate document.

This document (Com_NT.pdf) is available directly from ROTRONIC and can also be downloaded from our web site.

 
 

 

Copyright 2007 Alpha Controls & Instrumentation.  All rights reserved.