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DUCT HUMIDITY TRANSMITTER    GDH-420 | GDH-110 | GDHO-420

 
DUCT HUMIDITY TRANSMITTER (GDH-420)

"GDH" Duct Humidity Transmitter is intended for an Electronic Humidity Transmitter to measures the Duct Relative Humidity (RH) and convents the measurement into and electric signal.

This unit can be used with all system equipments that can receive output signals 4 - 20 mA DC
of the detector.

● Electronic sensing circuit varies signal into 4 - 20mA DC (within 0 ~ 100% relative humidity)
● Sensing Accuracy is ±3% within usage range of 20 ~ 90%Rh.




● SUPPLY VOLTAGE            :     24VAC/DC ±20%
● FREQUENCY                     :     50 or 60Hz
● SENSING ELEMENT          :      Integrated Circuit
● POWER CONSUMPTION     :     0.5VA
● SENSING RANGE              :     0 ~ 100%Rh
● ACCURACY at 20℃            :     at 20 ~ 90%Rh within ±3% Rh
● OUTPUT SIGNAL               :     4  - 20mA DC
● SENSING TIME                 :     Approx 20 sec. (velocity 20m/s)
● AMBIENT TEMPERATURE  ;
    1) On operation                      :  -15 ~ +80℃
    2) On transportation & storage  : -25 ~ +65℃
● AMBIENT HUMIDITY  ;
    1) On operation                      :  5 ~ 100%Rh
    2) On transportation                :  Below 95%Rh
● PROTECTION CLASS             :  IP54
● CABLE FITTING                     :  PF1/2"
● WEIGHT                                :  0.17Kg (W/BRACKET)




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