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Overview

The H7625, H7635, and H7655 are highly accurate, stable humidity transducers designed for use with HVAC controllers such as the T7350 Thermostat, T775U Remote Humidity Controller, and W7760 Direct Digital Controllers. The Ceramic Technology humidity sensor is not affected by condensation and provides excellent long-term stability.

Features

  • Ceramic Technology overcomes the limitations of other resistance based humidity sensors that use water soluble polymer coatings.
  • Ceramic Technology allows sensors to recover fully from condensation, fog, and high humidity.
  • Highly accurate, repeatable, stable output with negligible hysteresis.
  • Temperature compensated output.
  • Zero and span trimmers, and increment/decrement recalibration feature.
  • All units have selectable 4-20 mA, 0-10 Vdc, or 0-5 Vdc output. NIST traceable 2%, 3%, and 5% calibration, every sensor calibrated at 3 different points.
  • All humidity sensors use the same enclosure as the T7770 sensor, except the H7655A, which uses the T7047-like enclosure.

Product Specifications

Application
Wall mounted Humidity and Temperature Sensor
Dimensions (in.)
5 1/8 in. high, 3 3/16 in. wide, 15/16 in. deep
Dimensions (mm)
130mm high, 81mm wide, 24mm deep
Used With
Excel 15, Excel 10, T7350, T775 Series 2000
Comments
Ceramic resistance humidity sensor
Item Type
Product
Operating Humidity Range (% RH)
0 to 100% RH
Voltage
18-36Vdc or 18-28Vac
Operating Temperature Range (F)
-10 F to 160F
Operating Temperature Range (C)
-23C to 70C
Shipping and Storage Temperature Range (F)
-40 F to +150 F
Shipping and Storage Temperature Range (C)
-40 C to +65 C
Output
Humidity-- 4-20 mA, 0-5 Vdc, or 0-10 Vdc selectable; Temperature--20K ohm NTC
Accuracy
±3% from 20-95% RH
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