Constant temperature and humidity control cabinet

Constant temperature and humidity control cabinet

Description:

Constant temperature and humidity control cabinet widely used in workshop,
exhibition, archives, laboratory, network station.

Our control system for constant temperature and humidity can save much
energy,reduced the working time of compressor, extend the working time of
facilities. PLC is the key unit in our system,it has good stable, Strong anti-
interference ability.The system fixed warm humidity transmitter as digital
transmission.long transmission distance, free of electrostatic interference.
Control precision.

System hardware structure:

The core of system is Siemens PLC, touch screen as human-computer interface.
the temperature and humility transfer by sensor, It is processed into digital
signal by single chip, via RS485 wire transfer to PLC, and data processing, and
controlled via PID. Keep constant temperature and humility controlling
compressor, humidificatin valve,fan valve.

The procedure of control for constant temperature and humid:
There are 5 method from PLC controlling.
1. monitor status. The system only reads the temperature and humidity of
the environment,without controlling.
2. Hand control status.when compressor forced operation need hand
control.You can touch compressor 1, compressor 2 for start.
3. Automatic humidification, When start this method, the system will work
according fixed upperlimit & lowerlimit.

4. Automatic temperature control. When start this method, the system will
work according fixed upperlimit & lowerlimit. At the same time, monitor the
outdoor temperature is less than 14 ℃

5. Circulation working: combination method 3 & method 4. Temperature
controlling then humidification controlling.

Minimum Order: 1 sets

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