IN-E-HyLab-V4_11
Rotronic AG
Bassersdorf, Switzerland
Document code Unit
Instruction Manual
Document Type
HygroLab bench top indicator version 4:
instruction manual
Document title
Page 2 of 51
© 2006; Rotronic AG IN-E-HyLab-V4_11
Table of contents
1 Overview ....................................................................................................................................3
2 General description ..................................................................................................................4
2.1 Power requirements................................................................................................................4
2.2 Probes and probe inputs.........................................................................................................4
2.3 Analog outputs (optional) ........................................................................................................6
2.4 Serial interface (HygroLab 2 and 3)........................................................................................7
2.5 Optional Ethernet (TCP/IP) interface (HygroLab 2 and 3)......................................................9
3 Optional configuration and communication software ........................................................10
4 How to configure the HygroLab ............................................................................................10
4.1 Internal service connector (HygroLab configuration)............................................................10
4.2 Baud rate compatibility requirements ...................................................................................11
4.3 Ethernet local area network ..................................................................................................11
4.4 RS-485 multi-drop network (HygroLab 2 and 3)...................................................................12
4.5 Selection of the probe supply voltage (main PCB) ...............................................................14
5 Operation.................................................................................................................................14
5.1 Unit system ...........................................................................................................................15
5.2 Display and keypad...............................................................................................................15
5.3 Probe Input Selection............................................................................................................16
6 Function menu ........................................................................................................................16
6.1 CALCULATE (HygroLab 2 and 3).........................................................................................17
6.2 MODE (HygroLab 3) .............................................................................................................18
6.3 DISPLAY (HygroLab 2 and 3)...............................................................................................21
6.4 ADJUST M.PT ......................................................................................................................21
6.5 ADJUST 1PT.........................................................................................................................23
6.6 ADJUST REF........................................................................................................................24
6.7 PROBE..................................................................................................................................25
6.8 SETTINGS ............................................................................................................................25
6.9 SYS STATUS........................................................................................................................26
7 Error and status messages....................................................................................................26
8 Connectors..............................................................................................................................27
9 Environmental limits ..............................................................................................................28
10 Maintenance of the ROTRONIC probes................................................................................29
11 Specifications..........................................................................................................................30
12 Practical advice for measuring humidity .............................................................................31
13 Probe calibration basics ........................................................................................................31
13.1 Temperature calibration ........................................................................................................31
13.2 Humidity calibration...............................................................................................................32
14 Humidity definitions ...............................................................................................................33
15 Dew point accuracy ................................................................................................................36
16 ASCII communications protocol ...........................................................................................37
17 Water activity measurement..................................................................................................40
17.1 Water activity: definition and applications.............................................................................40
17.2 Using the HygroLab 2 or 3 to measure water activity...........................................................42
17.3 Principle of measurement .....................................................................................................43
17.4 General recommendations....................................................................................................44
17.5 Using the AwE mode (HygroLab 3) ......................................................................................45
17.6 Using the AwQuick mode (HygroLab 3) ...............................................................................47
18 Accessories for the HygroLab...............................................................................................50
19 Document releases.................................................................................................................51