WHD Temperature & Humidity Controller(Pannel)

●Contact capacity: 5A/AC250V

● Temperature measuring range: -40.0℃～99.9℃

●Humidity measuring range: 20%RH～90%RH

●Analog output: DC 4～20mA

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Information

Parameter

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General

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.

Specification

Function

The message of temperature and humidity in the box is detected by the sensor and analyzed by the controller:

When environmental temperature, humidity is up to the presetting value or exceed the presetting value, the controller is giving related signal to contects of relay, then the heater(or fan) is energized and working to heat of dehumidifying; after environmental temperature, humidity is well below the presetting value, the heater(or fan) is deednergized and stop working。

Solution Structure

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1.Technical parameter

1.1 Electrical performance

Technical parameter		Value
Measuring range	Temperature	-40.0℃～99.9℃
Measuring range	Humidity	0%RH～99%RH
Precision	Temperature	±1℃
Precision	Humidity	±5%RH
Transmitting output		DC 4～20mA or DC 0～20mA
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/stop gap		5
Communication port		RS485, MODBUS(RTU)
Auxiliary power	Voltage	AC 85～265V, DC 100～350V
Auxiliary power	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

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