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Environmental & Combustion Controls
Economizer Sensors
In a basic Economizer System, either an outdoor temp (C7650) or an enthalpy sensor (C7400) will be needed. For mixed or discharge air, the C7046 or the C7150 can be used. In cases where DCV is used, either the C7232 or The C7632 CO2 Sensors can be used.

Compare Select and Compare the Product Models below.  Limited to five.  Some groupings may not be comparable.
  
C7150
Mixed or Discharge air sensor (thermistor mounted on a wafer board)
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C7400
Solid State Enthalpy Transducer used with Economizer Logic Modules
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C7660
Selectable Temperature Sensors
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Compare Select and Compare the Product Models above.  Limited to five.  Some groupings may not be comparable.
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Application
Enthalpy economizingSelectable Temperature Sensor
Temperature economizingTemperature Mixed Air
Application Type
Duct mixed or discharge airDuct outside (supply) or return
Sensor Type
10-20 mA inversely proportional3000 ohms @ 25C NTC
3000 ohms @ 77 F NTC4 or 20mA Output
4-20 mA output
Electrical Connections
1/4 in. (6 mm) quick-connect terminals.Two 1/4 in. quick-connect terminals
Mounting
Mount on a mounting bracket (not included) inside the mixed air or discharge air duct.Mounted in any position where it is exposed to freely circulating air
Operating Temperature Range (F)
-25 F to +125 F-40 F to +110 F
-40 to 149 F32 F to 125 F
35 F to 100 F40 F to 100 F
40 F to 110 F
Maximum Ambient Temperature (F)
250 F
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