Flagship Humidity and Temperature Transmitter HMT330 Series

Vaisala HMT330 series are easy-to-use transmitters for demanding industrial and air conditioning applications. The transmitters measure relative humidity and temperature and from these calculate dew point and wet bulb temperature, mixing ratio and absolute humidity. They can be configured to the customer's requirements on the production line, but configuration and parameters can also be set by the user. The series has both analogue and serial outputs as well as several options: different cable lengths, power supply modules and serial interface modules as well as a local display.

Model HMT330
Measurement Range Humidity: 0 - 100% rH
  • HMT331: -40 to 60ºC
  • HMT333: -40 to 80ºC or -40 to 120ºC
  • HMT334/335/337/338: -70 to 180ºC
    Dewpoint, mixing ratio, absolute humidity, wet bult temperature, enthalpy, water vapor pressure
Sensor Humidity: Vaisala HUMICAP 180
Temperature: PT100 RTD
Accuracy at 20ºC Humidity: ±1.0%rH (0 - 90%rH), ±1.7%rH (90 - 100%rH)
Temperature: ±0.2ºC
Power supply 10-35 VDC / 24VAC
Output 0-20mA, 4-20mA, 0-1V, 0-5V, 0-10V, RS-232, RS-485(optional)
Mechanics Protection: IP65 (NEMA 4)
Display: One line, changing or fixed variables
Remarks HMT331 for wall mounting
HMT333 for duct mounting and tight spaces
HMT334 for high pressures up to 100 bar and vacuum conditions
HMT335 for high temperatures
HMT337 for high humidity and meteorological applications
HMT338 for pressurized pipelines up to 40 bar

Specific References


HMT330 Series Catalogue

Instrinsically Safe Humidity and Humidity Transmitter HMT360 series

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