HUMICAP® Humidty and Temperature Transmitters HMT120 and HMT130

The Vaisala HUMICAP® humidity and temperatur transmitters HMT120 and HMT130 are designed for humidity and temperature monitoring in cleanrooms and are also suitable for demanding HVAC applications.

The transmitter incorporates technology that measures relative humidity accurately and reliably. The Vaisala HUMICAP is resistant to dust and most chemicals. The transmitter is optimized for use in cleanrooms. The smooth surface of the enclosure makes it easy to clean and enclosure materials is chosen to tolerate purifying agents. Furthermore, the cabling done trough the back wall of the transmitter.

The transmitters use a fully interchangeable relative humidity probe. The probe can be easily removed and replaced with a new one without having to adjust the transmitter, which allows to for easy and quick recalibration. They are available as wall mounted or remote-probe, optional with LCD Display

Features and Benefits:

  • Vaisala HUMICAP® technology with humidity sensor HUMICAP® 180R
  • 2-wire-loop-powered or 3-wire voltage output confugurations
  • Interchangeable probe (easy field calibration)
  • Resistant to dust and most chemicals
  • Optional LCD-display
  • USB cable available for a PC connection for maintenance
  • Wall-mounted or remote-probe
  • Constant output probe available
  • Can be mounted outdoors using a installation kit and radiation shield
  • Enclosure IP65
  • Suitable for cleanrooms and demanding HVAC-applications

Relative humidity:

Measurement range 0...100 % rH
Humidity sensor Vaisala HUMICAP® 180R


Measurement range -40°C...+80°C
Temperature sensor PT100 RTD 1/3 Class B IEC751

HMT120 two-wire transmitter (loop power):

Current output signals 4...20mA
External loop voltage 10...30 VDC/20...30VDC

HMT130 three-wire transmitter:

Voltage output signals 0...1V, 0....5V, 0...10V or user defined

Serial output: RS458, non isulated
Relay output: 1 relay (max. 50 VDC, 200mA)

Housing classification IP65
Probe cable lengths: 3m, 5m, 10m up to 50m
Display (optional): 128x64 resolution

DATASHEET» HMT120-130.en.pdf (852kB)
HANDBOOK» HMT120_User__s_Guide.pdf (1120kB)