| Accuracy: | Temperature ±1℃, Humidity ±5%RH |
| Auxiliary power supply: | AC 85–265 V, DC 100–350 V |
| Consumption: | Base power consumption (≤ 0.8 W), relay power consumption (each channel ≤ 0.7 W) |
| Dimension(L*W*H): | 88*90*52mm |
| Installation: | 35 mm DIN rail |
WHD20R-22 Temperature and Humidity Controller
The Acrel WHD series intelligent temperature and humidity controller is suitable for setting and controlling temperature and humidity in equipment such as high-voltage switchgear, terminal boxes, ring mains panels, substations, etc. It can effectively protect relevant equipment from faults caused by excessively low or excessive temperatures, leakage currents or flashovers, etc. due to humidity or condensation.
Product info
Technical data
| Technical parameters |
Value
|
|
| measuring range |
temperature
|
-40.0℃～99.9℃
|
| moisture |
0%RH～99%RH
|
|
| precision |
temperature
|
±1℃
|
| moisture |
±5%RH
|
|
| Transmit output |
DC 4～20mA or DC 0～20mA
|
|
|
Setting the control parameter range
|
Heating to increase temperature |
-40.0℃～40.0℃
|
| Bubbles to reduce temperature |
0.0℃～99.9℃
|
|
| Humidity control |
20%RH～90%RH
|
|
| Output contact capacity |
5A/AC250V
|
|
| Start/stop gap | 5 | |
| communication port |
RS485, MODBUS (RTU)
|
|
| Auxiliary energy | voltage |
AC 85-265V
DC 100～350V
|
| consumption | Base power consumption (≤ 0.8 W); relay power consumption (each channel ≤ 0.7 W) | |
| Insulation resistance |
≥100MΩ
|
|
| Power frequency withstand voltage | Performance with housing, accessible metal parts/ Power with other connection groups 2 kV/1 min (AC, RMS) |
|
| Average working hours without interruption |
≥50000h
|
|
|
Operating state (controller))
|
temperature
|
-20℃～+60℃
|
| humidity |
≤95%RH, relative humidity, without condensation and corrosive gases
|
|
| Height |
≤2500 m
|
|
