The HE-67xx Series Humidity devices house both a humidity and a temperature sensor in a wall or duct-mount style. The humidity sensor is capable of measuring Relative Humidity (RH) over the entire range of 0 to 100%, and its All-Polymer™ construction provides improved resistance to chemical corrosion.
The TRUERH™ product line delivers devices with RH accuracy of either ±2% or ±3% RH. TRUERH™ humidity elements produce voltage output signals proportional to measured humidity for humidity indication. Temperature sensors are available in thin-film nickel, thin-film platinum, and silicon. The elements are powered with 14 to 30 VDC or 20 to 30 VAC and feature a user-selectable humidity output of 0 to 10 VDC or 0 to 5 VDC.

Features
• TRUERH™ circuitry and calibration techniques for which patent protection is pending
• All-Polymer humidity sensor patented sensing element provides accurate and reliable humidity sensing
• tested and calibrated with equipment certified to be in compliance with National Institute of Standards and Technology (NIST) guidelines
• ±2% RH accurate model includes test and calibration equipment certificate of calibration conformance
• humidity and temperature sensors in one unit eliminates the need for separate sensors and reduces installation costs
• user-selectable output voltage range allows choice of standard voltage outputs for use with systems in service or new systems