EHRH Waterproof Relative Humidity Transmitters

EHRH Waterproof Relative Humidity Transmitter

Both the sensor and electronics are contained in an epoxy-hardened enclosure designed for continuous service. A water-tight membrane filter is installed over the RH sensor for increased protection against high RH, contaminants and washdowns. The unit is designed to withstand 100% saturation.

The relative humidity transmitter sensor incorporates a bulk polymer resistance element. The polymer is impervious to most contaminants and, since it is a bulk resistance device, surface contamination such as dust will not alter the accuracy of the readings.

The EHRH humidity transmitter is provided with continuous temperature compensation which adjusts for temperature-induced change in the RH sensor output. The compensation provides high measurement accuracy over the entire operating range of the instrument.

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EHRH Transmitter Features


  • Waterproof Sensing Element and Housing
  • Compact Transmitter with Built-in Sensor
  • Bulk Polymer Resistance RH Sensor
  • Resistant to Contamination
  • Thermistor Temperature Measurement
  • Temperature Compensation


  • Greenhouses
  • Textile Mills
  • Food Processing
  • Shipping Containers
  • Swimming Pools
  • Hospital Suites
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