Cost-efficient and reliable wall mount humidity and temperature measurement for ventilation control

The Vaisala INTERCAP® Humidity and Temperature Transmitter Series HMW80 combines proven stability with easy installation and reliable operation. The HMW80 offers both combined relative humidity and temperature measurement, as well as temperature-only measurement for temperature control applications.

Ready to use out of the box, the HMW80 requires no preconfiguration or adjustment, and is easy to install thanks to its simple two-piece construction: just complete the wiring to the terminal block on the bottom of the unit, then snap on the lid of the electronics enclosure to complete the installation.

The HMW80’s enclosure is made of UL V0-approved materials and is IP30 protected. The new design in signal white (RAL9003) color, blends in well on most modern office walls.

The HMW80 is available in four different versions:

  • TMW82: 4–20mA (temperature only)
  • TMW83: 0–10V (temperature only)
  • HMW82: 2x 4–20mA (relative humidity and temperature)
  • HMW83: 2x 0–10V (relative humidity and temperature)

The high power output required by the measurement signals often distorts temperature and relative humidity measurements in wall sensors. This self-heating increases the temperature reading and decreases the humidity reading. This problem has been minimized in the HMW80 by using thermal modeling and testing during the design phase.

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