Carrier ZS Standard - Page 66

Relative Humidity sensors
Carrier Sensors CARRIER CORPORATION ©2021
Installation Guide All rights reserved
62
100% RH
Output
Transmitter outputs a 20 mA, 5 Vdc, or 10 Vdc signal regardless of
sensor reading. (For troubleshooting only.)
Increment RH
Output
Shifts the RH output linearly up in 0.5% steps. Switch 4 must be set
to ON first. After switch 4 is ON, each time switch 5 if set to ON, the
RH output increases by 0.5%.
Decrement RH
Output
Shifts the RH output linearly down in 0.5% steps. Switch 4 must be
set to ON first. After switch 4 is ON, each time switch 6 if set to ON,
the RH output decreases by 0.5%.
Reset to
Original
Calibration
Resets the RH output back to the original calibration. Switch 4 must
be set to ON first. After switch 4 is ON, toggle switches 5 and 6 ON
then OFF. After 5 and 6 are OFF, slide switch 4 OFF.
RH conversion formulas
Use the following table to convert transmitter output signal to %RH.
Output
Example:
If signal output is...
Calculation is...
4-20 mA
4 mA = 0% RH
20 mA = 100% RH
12 mA
(12mA-4mA)/0.16 = 50% RH
0-10 Vdc
0 Vdc = 0% RH
10 Vdc = 100% RH
8 Vdc
8 Vdc/0.10 = 80%RH
0-5 Vdc
0 Vdc = 0% RH
5 Vdc = 100% RH
2 Vdc
2 Vdc/0.05 = 40% RH
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