Humidity Module for Environmental Chambers



  • Full temperature compensation over the operating temperature range of -70˚C ... +180˚C
  • High temperature tolerance, also suitable for heatsterilization
  • Excellent measurement accuracy with Vaisala HUMICAP® 180R sensor
  • Durable
  • Easy field calibration by trimmers
  • Maintenance-free
  • Easy to install
  • Applications: test chambers, incubators

The HMM100

The Vaisala HUMICAP® Humidity Module HMM100 is an open frame module for integration into environmental chambers. The modules provide a single analog output channel for relative humidity (RH) or dew point (Td).

Two probes are available, one made of plastics, the other of stainless steel. Several cable lengths up to 3 meters are available. Both the probes have the Vaisala HUMICAP® 180R sensor which ensures excellent measurement accuracy.

Robust and Reliable

The HMM100 probe works in freezing conditions (-70 °C) and also in temperatures up to +180 °C. The HMM100 is easy to install and the probe can be freely placed in a test chamber as the speed of airflow does not affect the measurement.


Compared to psychrometers, the HMM100 is practically maintenance free. There is no wick that needs changing and there is no need for a water tank or water pump. Thus, environmental stress screening can be done reliably.


The accessories available are a component board mounting bracket with a lid, probe clamp, USB-cable for service use, a module housing and a probe mounting flange.


Types Of Humidity Products - Fixed Installations/OEM Products

  • HMT330

  • HMT360

  • HMT310

  • HMDW80

  • HMT120/130

  • HMW90

  • HMDW110

  • HMS110

  • HMS80

  • HMP60

  • HMP110

  • HMM100

  • HMP3

  • HMP4

  • HMP5

  • HMP7

  • HMP8

  • HMP9

  • INDIGO 200

  • INDIGO 520

  • TMP1

  • HMM170

  • HMD60