● Two channels temperature & humidity (with sensor) ● Measuring temperature range: -40~+99℃ ● Measuring humidity range: 20%RH~90%RH ● Display: LED display ● Optional function: RS485(Modbus-RTU) communication ● Temperature and humidity measuring & controlling ● Panel mounted
WHD series smart temperature and humidity controller 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.
| Technical Parameter | WHD48 | WHD72 | WHD46 | WHD20R | |
| Measuring range | Temperature | -40℃~99.9℃ | |||
| Humidity | 20%RH~90%RH | ||||
| Accuracy | Temperature | ±1℃ | |||
| Humidity | ±5%RH | ||||
| Set range of controling parameters | Heating for temperature rising | -40℃~40℃ | |||
| Blowing for temperature decreasing | 0℃~99.9℃ | ||||
| Humidity | 20%RH~90%RH | ||||
| Optional function | Communication | RS485 Modbus-RTU | |||
| Analog output | No | DC4-20mA | No | ||
| Alarm | No | 1 alarm output | |||
| Auxiliary power supply | AC85~265V, DC100~350V | ||||
| Insulation resistance | ≥100MΩ | ||||
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