HT-670x Series Humidity Transmitters come in both wall or duct mount packages to meet a variety of sensing application needs. These attractively styled
controllers offer ease of installation and application flexibility. The transmitter generates a jumper-selectable output signal in either the 4 to 20mA or 0 to 10V range, corresponding to 0 to 100% Relative Humidity (RH). TrueRH transmitters can measure RH within either ±2% or ±3% accuracy. The 2% models include a National Institute of Standards and Technology (NIST) certificate of conformance. The patented All-Polymer™ humidity sensor construction improves resistance to chemical corrosion.

Features
• TrueRH technology features patented improvements in circuitry and calibration techniques
• All-Polymer humidity sensor provides accurate and reliable humidity sensing with the patented sensing element
• tested and calibrated with equipment certified to be in compliance with National Institute of Standards and Technology (NIST) guidelines
• jumper-selectable output: 0 to 10 VDC or 4 to 20 mA maximizes application flexibility
• all-plastic material for duct probe improves thermal performance and complies with Underwriters Laboratories Inc. ® (UL) flammability ratings for plenum use