Instruction Manual
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  5 of 51 
© 2006; Rotronic AG  IN-E-HyLab-V4_11 
IMPORTANT: All probes connected to the HygroLab can be supplied with 5 VDC by opening solder pad B12 
and closing solder pad B13 on the main PCB
. – see page 13: selection of the probe supply voltage. 
2.2.1  HygroClip digital probes 
The HygroLab is primarily designed for use with the ROTRONIC HygroClip digital humidity 
temperature probes. These probes permit to take full advantage of all the features and functions of 
the HygroLab. 
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: 
HygroClip S 
measurement in air 
max. 85°C (185°F) 
HygroClip SP05 
measurement in air ducts 
max. 85°C (185°F) 
HygroClip HP28 insertion probe 
measurement of materials in bulk 
max. 85°C 
(
185°F
)
HygroClip HK25 / HK40 air probe 
measurement at high temperature
HK25: max. 100°C (212°F) 
HK40: max. 200°C (392°F) 
wire mesh filter 
HygroClip SC05 
measurement in tight spaces 
max. 100°C (212°F) 
HygroClip HS28 sword probe 
measurement of paper stacks/rolls
max. 85°C 
(
185°F
)
Note: all of the above probes are designed for use with the HygroPalm indicator and have a 
DAT05 connector. An adapter cable MOK-01-B5 is required for connection to the HygroLab (see 
Accessories). Similarly, the HygroClip probes designed for use with the HygroFlex transmitter 










