● Optional functions: alarm, communication, analog output
● Temperature and humidity measuring & controlling
● Panel mounted
Overview
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.Function
| Accuracy Temperature ±1℃ Humidity ±5%RH Auxiliary power supply AC 85-265V, DC 100-350VConsumption Auxiliary power supply: Basic power consumption(≤0.8w) Relay power consumption(each channel≤0.7w) |
Installation: Panel mounted Dimension(L*W*H)： Pannel size (L×W): 123*63mm Cutout size (L×W): 116*56mm Housing (L×W×H): 56*116*85mm | |
Wiring
Wiring Illustration
Typical Connection
FAQ
Q: Connect users between the sensor and the controller,Can it be matched?How long is the length in meters?A: The user can wire,but it is required to use a 4-core shielded wire,and a 2.5-meter shielded wire is attached to the factory. The longest distance between the sesor and the controller is 20 meters.Q: Can WHD Switch control manually and automatically?A: Yes,but be sure to explain to the customer service before placing an order,it is an unnormal operation. Q: User have their own sensor,can they buy a controller?A: No,the sensor and controller need to be used together,2 device can not sold seperately.| 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或DC 0～20mA | |||
| Set range of controlling parameter | Heating forTemperature rising | -40.0℃～40.0℃ | ||
| Blowing fortemperaturedecreasing | 0.0℃～99.9℃ | |||
| Humidity control | 20%RH～90%RH | |||
| output contact capacity | 5A/AC250V | |||
| Start/stop gap | 5 | |||
| Communication port | RS485,MODBUS(RTU)协议 | |||
| Auxiliary power | Voltage | AC 85～265VDC 100～350V | ||
| 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 group 2kV/1min(AC,RMS) | |||
| average work time without stoppage | ≥50000h | |||
| Working condition(controller) | Temperature | -20℃～+60℃ | ||
| Humidity | ≤95%RH，without condensation and corrosive gas | |||
| Altitude | ≤2500 m | |||
