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NW21D Telecom Shelter Ivs Temperature and Humidity Environment Remote Monitoring System Free Cooling System Controller
NW21D temperature and humidity controller controls the work of air-condition and DC fans based on indoor and outdoor temperature, indoor humidity. Control logic is smart, simple and stable, it can help energy saving. It output a start signal for ventilation system, through relay (free dry contact), and distribute AC 220V for air-conditioner. It output alarm signal when environmental condition has abnormal or equipment has failure.
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Function: |
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Program |
every work temp. can be programmed |
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Display |
LED display temperature, humidity and alarm codes |
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Control |
control the work of air-conditioner and DC fan based on indoor, outdoor temperature and indoor humidity. |
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Monitor |
temperature, humidity, fire, flood, door, DC fan failure, air-con. failure, AC power off, battery voltage. |
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Alarm |
6 relays output alarm signal upload alarm information via communication LED display alarm code |
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Communication |
supply monitor software (installed in PC), use RS485/RS232 interface. |
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Technical parameter: |
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Input voltage |
AC 220V 50Hz, DC 48V |
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Display |
LED |
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Work ambient temperature |
-25°C~+55°C |
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Work ambient humidity |
5%~95%RH |
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Temperature detect |
2 x NTC 103AT, detect range: -30°C ~ 70°C accuracy: ± 2°C, resolution: 1°C compensation value can be programmed |
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Humidity detect |
1 channel, detect range: 5% ~ 95% accuracy: ± 5%, resolution: 1% compensation value can be programmed |
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Output relay |
6 pcs |
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AC power protect |
Overload, short circuit |
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Sensor: |
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Type |
Name |
Qty |
Note |
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WD3 |
Temperature sensor |
1 |
Accessories, fixed outside |
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WS2 |
Hygrothermograph sensor |
1 |
Accessories, fixed inside |
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SS-168P |
Smog sensor |
1 |
Accessories, fixed inside |
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HO-03 |
Intrusion sensor |
1 |
Accessories, fixed on the door |
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TT |
Immersion sensor probe |
1 |
Accessories, put it on the floor |
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DD5 |
AC power off sensor |
1 |
Fixed in the box |
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IA5 |
Current sensor |
1-2 |
Fixed in the box |
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DC voltage sensor |
1 |
Integrated in the controller |
The DC fans works only the environment satisfies following conditions: 1.no fire alarm 2.indoor humidity ≤ preset of h01 3. voltage of battery > preset of U01 4. outdoor temperature > indoor temperature, and the difference >t08.
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