WHD20R-22 Digital Temperature & Humidity Controller
The controller for temperature and humidity is suitable for adjustment and control of temperature and humidity in equipments of high voltage switchgear, terminal box, ring network panel, box transformer substation etc. It can effectively protect relevant equipment from faults resulting from excessive low or high temperature, creepage or flashover etc. from humidity or condensation. These products meet the requirements of GB/T 15309-1994.
Technical Parameters of WHD20R-22 Digital Temperature and Humidity Controller
How to Wire a WHD20R-22 Digital Temperature & Humidity Controller
WHD20R-22 Digital Temperature & Humidity Controller Applications
|
Technical Parameter |
Value |
|
|
Measuring Range |
Temperature |
-40.0℃~99.9℃ |
|
Humidity |
0%RH~99%RH |
|
|
Precision |
Temperature |
±1℃ |
|
Humidity |
±5%RH |
|
|
Transmitting Output |
DC 4-20mA or DC 0~20mA |
|
|
Ser range of controlling parameter |
Heating for Temperature rising |
-40.0℃~40.0℃ |
|
Blowing for temperature decreasing |
0.0℃~99.9℃ |
|
|
Humidity control |
20%RH~90%RH |
|
|
Output Contact Capacity |
5A/AC250V |
|
|
Start/stopgap |
5 |
|
|
Communication port |
RS485,MODBUS(RTU) treaty |
|
|
Auxiliary Power |
Voltage |
AC/DC 85-265V |
|
Consumption |
Basic power consumption(≤0.8w)+relay power consumption(each channel≤0.7w) |
|
|
Insulation Resistance |
≥100MΩ |
|
|
Power-frequency withstand voltage |
power with shell, touchable metal parts/power with other terminal groups 2kV/1 min(AC.RMS) |
|
|
Average work time without stoppage |
≥50000 hours |
|
|
The working condition(controller) |
Temperature |
-20℃~+60℃ |
|
Humidity |
≤95%RH, without condensation and corrosive gas |
|
|
Altitude |
≤2500m |
|
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