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VIII. Humidity Sensor
a. Humidity sensor specifications.
Output:
Range:
Accuracy:
Operating Voltage:
Current Draw:
Warm Up Time:
Operating Temp:
Size of Probe:
Weight:
b. The humidity sensor is a three-wire sensor. Three wire sensors use
the red wire for positive voltage, the white wire for the output signal,
and the black wire for ground. Warning: Always connect the
sensor with the power turned off.
c. Do not install the humidity sensor in direct sunlight.
d. A humidity sensor utilizes a thin polymer that varies in dielectric
constant directly proportional to changes in the amount of water vapor
at the sensor element. The element provides a linear voltage output
that is converted into a 4-20 mA sensor output signal.
Global Water
800-876-1172 • globalw.com
4-20mA
0-100% RH
+ 2% RH
10-36VDC
3 mA plus sensor
3 seconds minimum
-40° to +55°C
1 ½" diameter x 7" long
½ lb.
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