WHD20R-22 Digital Temperature & Humidity Controller
Details
China Craft
Craft

WHD20R-22 Digital Temperature & Humidity Controller

The controller for temperature and humidity 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. These products meet the requirements of GB/T 15309-1994.

Technical Parameters of WHD20R-22 Digital Temperature and Humidity Controller

How to Wire a WHD20R-22 Digital Temperature & Humidity Controller

WHD20R-22 Digital Temperature & Humidity Controller Applications

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

Ser 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/stopgap

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 Resistance

≥100MΩ

Power-frequency withstand voltage

power with shell, touchable metal parts/power with other terminal groups 2kV/1 min(AC.RMS)

Average work time without stoppage

≥50000 hours

The working condition(controller)

Temperature

-20℃~+60℃

Humidity

≤95%RH, without condensation and corrosive gas

Altitude

≤2500m

As a power meter manufacturer, we can provide kinds of dc power meter for sale, if you are interested, please leave us a message.

Location : No. 253 Yu Lv Road， Jiading District, Shanghai China, 201801 Jiading District,
Contact : rel Ac, 86 21 69156352

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