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Proportional Humidity Controller

Humidity Transmitter and Temperature Sensor

HE-6700 Series Transmitter

The HE-6700 humidity elements provide independent humidity and temperature signals for use in a wide range of sensing applications, and are suitable for use with most Heating, Ventilating, and Air Conditioning (HVAC) controllers.

The humidity elements are a durable, cost-effective solution for humidity sensing. They are easy to install and factory calibrated to NIST standards. The ±2% models ship with NIST certificates of conformance to validate Johnson Controls use in demanding HVAC applications. The elements can operate in areas with little or no airflow, and recover after loss of power or saturation.

The patented All Polymer humidity element is capable of sensing over the entire range of 0 to 100% RH; its construction provides resistance to corrosion in typical HVAC environments. The temperature sensor is isolated from and operates independently of the humidity sensor.

The elements are available with three types of temperature sensors:

The temperature and humidity information from the elements can be used to calculate enthalpy, important in determining an energy-efficient and cost-effective strategy. Space and duct humidity are also important factors in overall indoor air quality. The elements allow monitoring and comparing of humidity levels with those recommended in ASHRAE Standard 62-1999.  

Features and Benefits
  • TrueRH -Circuitry and calibration techniques for which patent protection is pending
  • All-Polymer Humidity Sensor- patented sensing element provides accurate and reliable humidity sensing
  • National Institute of Standards and Technology (NIST) Traceable Calibration is tested, verified, and audited per NIST standards
  • The 2% RH accurate model includes a NIST certificate of conformance and documents higher precision for 2% models
  • Humidity and Temperature Sensors in One Unit eliminates need for separate sensors, reducing installation time and cost
  • User-selectable Output Voltage Range allows choice of standard voltage outputs for use with systems in service or new systems
  • All-Plastic Material for Duct Probe improves thermal performance and complies with Underwriters
  • Laboratories Inc.® (UL) flammability ratings for plenum use; complies with Blue Angel (Germany) and TCO'95 (Sweden) environmental regulations
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