HMT120 Cleanroom and HVAC Relative Humidity, Dewpoint, Wet Bulb, Enthalpy and Temperature Transmitter, Wall Model, Current Loop, 1.5%RH/0.1°C accuracy

The HMT120 is designed for relative humidity and temperature monitoring in cleanrooms and it is also well suited for demanding HVAC applications. The smooth surface of the enclosure tolerates cleaning agents well and the surface is easy to clean. The HMT120 transmitters use a fully interchangeable sensor probe. It can be easily removed and replaced without having to adjust the transmitter, which allows for easy and quick recalibration of the transmitter.

The HMT120 has two 4…20 mA loop-powered outputs corresponding to 0…100% RH and -40…+60 °C (-40…+140 ° F) temperature. See table below for other options.

See HMT120 series products
The HMT120-series replaces the popular HMT100 transmitters.

The package includes:

Calibration certificate (ISO9001 compliant, traceable)
Cable gland for 2…6 mm cable
NPT1/2" and metric PG9 conduit fittings to facilitate wiring
User's Guide in English

HMT120 Cleanroom and HVAC Relative Humidity, Dewpoint, Wet Bulb, Enthalpy and Temperature Transmitter, Wall Model, Current Loop, 1.5%RH/0.1°C accuracy

The HMT120 Relative Humidity and Temperature Transmitter is ideal for cleanroom, laboratory and data center use. It can also calculate Dew point, Wet Bulb Temperature, Enthalpy, Absolute humidity and Mixing ratio.

Standard delivery time for single unit: 1 weeks
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Warranty: 24 months
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Detailed information

Measurement parameter(s)	Relative humidity Dew point Wet Bulb temperature Enthalpy Absolute Humidity Mixing Ratio Temperature
Measurement range	0 ... 100 % RH -20…+80 °C (-4…+176°F) Dew point 0 ... +80°C (+32 ... +176 °F) Wet Bulb Temperature 0 ... 300 g/m^3 (0 ... 131 gr/ft^3) Absolute Humidity -40 ... +1500 kJ/kg (-9.5 ... +652.6 BTU/lb) Enthalpy -40 ... +60 °C (-40 ... 140 °F) T
Measurement accuracy	±1.5 % RH (0 ... 90 % RH) ±2.5 % RH (90 ... 100 % RH) ±0.1 °C (±0.18 °F) T
Operating temperature	-40 ... +60 °C (-40 ... 140 °F)
Operating voltage	10 ... 35 VDC / 24 VAC
Analog outputs	4 ... 20 mA
Housing classification	IP65 (NEMA 4)
Links	See full specifications on Vaisala.com Download user guides and other product documents on Vaisala.com

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