Basic composition of electrical control system of high and low temperature alternating test chamber
The electrical system of the high and low temperature alternating test chamber is divided into strong and weak parts. The strong electricity part is mainly composed of the AC contactor and thermal relay that control the start and stop of the R404A compressor, the operation of the fan in the box, the solid state relay that controls the auxiliary heater, and the circuit breaker for line protection. The weak current part is made up of Japanese Youyi 1100 color LCD touch screen and supporting PLC (with one USB interface and one RS232 interface, which can be connected to a computer and can communicate with the computer), a human-machine interface touch screen and a temperature sensor. The temperature measurement sensor is: Pt100 platinum resistance. The temperature signal is sent to the PLC A / D conversion module through the Pt100 platinum resistance to realize the temperature control and display in the test chamber. Pt100 uses imported A-level components. The system is equipped with compressor high and low pressure switches for system operation failure alarm and compressor protection. The system is also equipped with compressor protection for overpressure, overload, overheating, and phase loss. The fan has a thermal protection function
The electrical system of the high and low temperature alternating test chamber is equipped with manual and automatic control; it has the functions of temperature measurement and control, real-time data display, parameter setting, record printing, alarm and fault display
Window Entry Fixed Awning,Window Fixed Awning,Front Entry Awning,Fixed Awning Window
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