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WHD20R-22 Din Rail Mounted Temperature & Humidity Controller

WHD20R-22


● Optional function: communication

● Temperature and humidity measuring & controlling

● DIN rail mounted


Description

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.



Function


Accuracy

Temperature ±1℃

Humidity ±5%RH


Consumption

Auxiliary power supply

Basic power consumption(≤0.8w)

Relay power consumption(each channel≤0.7w)



Installation

DIN rail 35mm


Dimension(L*W*H)

88*90*52mm



Auxiliary power supply

AC 85-265V, DC 100-350V



Technical Datasheet



Technical ParameterValue
Measuring RangeTemperature-40.0℃~99.9℃
Humidity0%RH~99%RH
PrecisionTemperature±1℃
Humidity
±5%RH
Transmitting OutputDC 4-20mA or DC 0~20mA
Set range of controlling parameterHeating for Temperature rising-40.0℃~40.0℃
Blowing for temperature decreasing0.0℃~99.9℃
Humidity control20%RH~90%RH
Output Contact Capacity5A/AC250V
Start/stop gap5
Communication portRS485,MODBUS(RTU) treaty
Auxiliary PowerVoltageAC/DC 85-265V
ConsumptionBasic power consumption(≤0.8w)+relay power consumption(each channel≤0.7w)
Insulation Resistanced≥100MΩ
Power-frequency withstand voltagepower with shell,touchable metal parts/power with other terminal group 2kV/1 min(AC.RMS)
Average work time without stoppage≥50000 hours
Working condition(controller)Temperature-20℃~+60℃
Humidity≤95%RH,without condensation and corrosive gas
Altitude≤2500m


Dimension






Wiring





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.






Package




MINIMUM PACKAGE







MINIMUM PAKAGE


Package dimensions(1 PC)

170*150*130mm

Pakage Weight(1 PC)

0.17Kg


WHOLE BOX PAKAGE


Package dimensions(36 PCS)

450*240*250mm

Pakage Weight(36 PCS)

6.5kG


PRODUCT HS CODE


9032100000

ATTENTION !

The above packing and weight data are only refer to model WHD20R-22.

For other models or optional functions, please contact the salesman for details, thank you for your cooperation!



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