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HT1D Series

Humidity Temp Duct
Higher Reliability, Faster Installation, Superior Accuracy | Sense the Difference

2% or 3% accuracy (NIST certification options)
0-5V/10V and 4-20mA RH/Temp (thermistors optional)
LCD display with field calibration menu
Field replaceable element
  • 2% or 3% RH versions with field replaceable sensor
  • Switch selectable 5V/10V and 4-20mA RH/T transmitter outputs
  • Thermistor outputs for temperature optional
  • Field calibration. LCD and push-button menu allows easy adjustment of calibrated RH value as needed to maintain certification.
  • Field replaceable sensor—without disturbing conduit
  • On-board temperature compensation for RH. Eliminates temperature coefficient errors and achieves an excellent measurement accuracy as well as high repeatability and offset stability. 
  • State of the art testing facilities. Certification options: 8-point (NIST traceability—consult factory)
  • Industry leading 7-year warranty/ 2-year replaceable element warranty 


The HT1D Series is designed with both the engineer and field technician in mind. The HT1D Series combines excellent stability with reliable operation in 2% or 3% RH accuracy options. Optional temperature transmitters, RTDs and thermistors add further flexibility when ordering. The standard LCD and field replaceable elements make the initial installation and future service a breeze.


  • HVAC room humidity and temperature measurement and control
  • Replaceable element is ideal for difficult environments such as swimming pools
  • Facilitating compliance with ASHRAE 62.1 standard for air quality
  • Indoor air comfort and control in HVAC systems
  • Maintain healthy air quality, minimize mold and other contaminants
  • Museums, hopsitals and other critical environments
  • Offices, conference rooms, and public assembly areas
  • Industrial process control environments
Product Price Quantity
$165.36 /


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All prices shown are excluding tax unless otherwise specified.