Relay Used in Instruments

In the digital input signal control loop, the relay has the function of isolation protection and remote monitoring, which not only prevents the 220V AC or 380V AC voltage from entering the 24V DC loop, but also can dynamically monitor and warn the motor operation, local/remote conversion, etc. In this kind of circuit, the electronic relay can not only control the opening and closing of the solenoid valve, but also control the opening and closing of the indicator light by using the different wiring forms of dry contact and wet contact.

Therefore, in the automatic control of chemical instruments, the extensive use of relays can not only improve the safety and stability of the control system, but also reduce the work intensity of personnel to a certain extent and ensure the long-term stable development of the company.