INTERCAP® Humidity and Temperature Transmitter Series HMD/W80

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The Vaisala INTERCAP® Humidity and Temperature Series HMD/W80 is a versatile product family designed for standard HVAC applications.

These cost-effective and reliable transmitters are easy to install and maintain.

Dew point temperature, wet bulb temperature and enthalpy output option available in selected models (see product datasheet for more details).

Vaisala INTERCAP® Humidity and Temperature Transmitter Series HMD/W80

Vaisala INTERCAP® Humidity and Temperature Transmitter Series HMD/W80

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Vaisala Warranty & Support

All Vaisala products and services are protected by full, 12-month warranty coverage as the standard minimum, with selected products being covered for up to 24 months. During the warranty period customers benefit from free repair or, where required, replacement. Standard repair lead times apply unless otherwise agreed.

Please contact Automatic Controls Company with any inquiries regarding warranty claims, repairs, service contracts, calibrations, or spare parts.

Extended Warranty

An extended warranty from Vaisala ensures repair or replacement of equipment for five years, guaranteeing optimal system performance and eliminating costly and inconvenient delays caused by repair or replacement quotation and approval processes.

Extended warranties are available for both new or previously purchased Vaisala products, though previously purchased products may require baseline calibration.

For more details on Vaisala warranty services, or if you are interested in customized or long-term warranty and priority service scheduling, please contact Vaisala Sales to discuss your needs.

Technical Support

Chat with us or call (502) 266-6640.

Product Information

HMD/W80 family products includes the following products

  • Wall-mount temperature-only transmitters TMW82/83
  • Standard wall-mount humidity and temperature transmitters HMW82/83
  • IP65-classified wall-mount humidity and temperature transmitters HMW88/89(D) with and without display, for humid areas
  • Duct-mount humidity and temperature transmitters HMD82/83(D) with and without display
  • Outdoor humidity and temperature transmitter HMS82/8

Operating Principle

HUMICAP is a capacitive thin-film polymer sensor consisting of a substrate on which a thin film of polymer is deposited  between two conductive electrodes. The sensing surface is coated with a porous metal electrode to protect it from contamination and exposure to condensation.

The substrate is typically glass or ceramic. The thin-film polymer either  absorbs or releases water vapor as the relative humidity of the ambient air rises or falls. The dielectric properties of the polymer film depend on the amount of absorbed water.

As the relative humidity around the sensor changes, the dielectric properties of the polymer film change, and so does the capacitance of the sensor. The instrument’s electronics measure the capacitance of the sensor and convert it into a humidity reading.

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