Product Details

Acrel WHD20R-22 Digital Temperature and Humidity Controller used for terminal box CE

Brand Name Acrel
Place of Origin China
Model Number WHD20R-22
Temperature Range -40.0~+99.9℃
Accuracy Class 1

Product Features

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.
Parameters
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 or DC 0~20mA
Set 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) treaty
Auxiliary Power
Voltage
AC/DC 85-265V
Consumption
Basic power consumption(≤0.8w)+relay power consumption(each channel≤0.7w)
Insulation Resistanced
≥100MΩ
Power-frequency withstand voltage
power 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
Demension

Wiring

Network

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.


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