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Enthalpy Sensor - supply duct/return air


4-20 mA Enthalpy Sensor - supply duct/return air

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Analog enthalpy sensor for use with W7212 and W7459 economizer controllers


  • C7400 solid state elements sense enthalpy (temperature and humidity); use two sensors for differential control, maximizing energy savings.
  • Use one sensor in outdoor air for single sensor control; use two sensors, one in return air and one in outdoor air, for differential control.
  • C7400 mount in any position up to 200 ft (61 m) away from Economizer Logic Module.
  • UL94-5V enclosure.

Product Specifications

Enthalpy economizing Sensor for A solid state enthalpy sensor designed to sense temperature and humidity with 5% accuracy
Dimensions (in.)
4.25 in high x 2.17 in wide x .81 in deep
Dimensions (mm)
108 mm high by 55mm wide x 20.5 mm deep
Used With
W7210, W7212A, W7213, W7214, W7215, W7459, W7460
Item Type
Mounted in any position where it is exposed to freely circulating air
Approvals, Underwriters Laboratories Inc.
Component Recognized
Electrical Connections
Two 1/4 in. quick-connect terminals
Operating Humidity Range (% RH)
11 to 89% RH
4-20 mA output
Operating Temperature Range (F)
-40 F to 150 F
Operating Temperature Range (C)
-40 C to 66 C
Ambient Temperature Range (F)
150 F Maximum
Ambient Temperature Range (C)
66 C Maximum