Vaisala HMT120 / HMT130 Humidity & Temperature Transmitters
Starting at $482.00

Some models in stock. View available part numbers.

Need Help? Call 1-800-884-4967 8:00am to 5:30pm ET


  • Vaisala HUMICAP technology w/ humidity sensor HUMICAP 180R
  • 2-wire loop-powered or 3-wire voltage output configurations
  • Interchangeable probe (easy field calibration)
  • Accurate and reliable
  • Resistant to dust and most chemicals
  • Optional LCD display
  • USB cable available for a PC connection for maintenance
  • Wall-mounted or with a remote probe
  • Constant output probe available
  • Can be mounted outdoors using a Vaisala installation kit and the Vaisala Radiation Shield DTR502B
  • Enclosure IP65
  • Suitable for cleanrooms and demanding HVAC applications

The Vaisala HUMICAP HMT120 and HMT130 Humidity and Temperature Transmitters are designed for humidity and temperature monitoring in cleanrooms and are also suitable for demanding HVAC applications.

The HMT120 and HMT130 incorporate Vaisala HUMICAP technology that measures relative humidity accurately and reliably. The Vaisala HUMICAP is resistant to dust and most chemicals.

The transmitter enclosure is optimized for use in cleanrooms. The smooth surface of the enclosure makes it easy to clean and the enclosure material is chosen to tolerate purifying agents. Furthermore, the cabling can be done through the back wall of the transmitter.

The HMT120/130 transmitters use a fully interchangeable relative humity probe. The probe can be easily removed and replaced with a new one without having to adjust the transmitter, which allows for easy and quick recalibration of the transmitter. The probe can be adjusted using one of Vaisala's portable meters as a reference.

Also available is a constant output probe with fixed RH and T output for convenient inspection of the monitoring system and signal transfer line.

The HMT120 and HMT130 transmitters are available as wall mounted or with remote probe. For high temperature applications or where space is limited, the remote probe is ideal. The transmitters come with an optional, LCD display, which shows the measurement results of selected parameters in selected units. The parameters are displayed simultaeously at two separate rows on the display.


Vaisala HMP110V Humidity & Temperature Probe
Replacement HUMICAP probe with VDIGI output signal interface for HMT120/130/140


Please consider these optional accessories.

Vaisala 226061 Probe Mounting Flange
Mounting flange for HMP100 Humidity/Temperature Probe
Vaisala 226067 Probe Mounting Clamps
10-Piece mounting clamps for the HMP110 humidity/temperature probe
Vaisala 215109 Outdoor Installation Kit
Vaisala 215109 Outdoor Installation Kit
Vaisala 215619 Duct Installation Kit
Vaisala 215619 Duct Installation Kit
Vaisala 211339 Connection Cable
Connection cable for the HMT120 humidity/temperature transmitter
Vaisala 219685 USB Cable
USB-RJ45 serial connection cable with software driver
Vaisala DTR504A Radiation Shield
5-plate shield to protect humidity and temperature sensors from solar radiation and precipitation
Vaisala HMT120 / HMT130 Probe Cable
Shielded cable with straight 4-pin M8 female connectors for remote probes
Part Number Price Available
Show Configuration
Base Price
Output Type
2-wire loop-powered
Output Parameters
Humidity & temperature (+$118.00)
Transmitter Type
Wall mount/fixed probe
Display (+$112.00)
Output Signal
4 to 20 mA
Output 1 - Humidity
RH: 0 to 100% RH
Output 2 - Temperature
-20 to 80°C (-4 to 176°F)
Display Units
Sensor Protection
Plastic grid with PTFE filter
Rain Shield
Probe Installation
Cable Bushings
Cable gland for 2 to 6mm dia cable
PC Accessories
Multilingual version
$712.00 3

Interested in Other Part Numbers?

Other part numbers are available to order but are not currently in stock. Current availability for non-stock parts is "Usually ships in 1-2 weeks". Click here to select options