Externally attached ultrasonic level switch fault treatment method, we need to grasp, and actively grasp the external paste intelligent ultrasonic level gauge troubleshooting method can avoid unnecessary trouble, then the external paste type ultrasonic ultrasonic level meter fault processing method is what?
External ultrasonic level switch fault treatment methods:
1. Check the power switch and no adjustment is found. Since the system power supply is a 220VAC power supply directly provided by the UPS, if the power supply fluctuates, not only will the solenoid valve of the above five valves be powered down, but also the other equipment will lose power, and the blowout screen-202 of the system should also be turned off. . Therefore, it can be determined that there is no problem with the power supply of the solenoid valve, and the power supply system is operating normally.
2. The gas source for molecular sieve switching requires 0.45 MPa or more, and the fluctuation of the gas source has a great influence on it. The fault is most likely to be caused by instrument air source pressure reduction, and instrument air pressure may be reduced due to partial blockage of the instrument air line. This is further evidenced by the presence of iron filings in the nitrogen-223 valve solenoid valve air path. Therefore, the instrument air ducts are purged and discharged.
3, check the history of the DCS computer to see if the molecular sieve program has abnormal records. Upon inspection, no abnormal record was found in the molecular sieve program, and the instructions issued by the computer were normal.
4. After the above five valves are automatically returned to normal, the molecular sieve program is further checked for operation. The operation and switching of the molecular sieve program are all normal, thereby further determining that the molecular sieve program in the computer has no problem.
After the above treatment, the molecular sieve system resumed normal operation, and the craft workshop drove.
5, for the solenoid valve, the general should be just one sudden failure, it is impossible to 5 simultaneous failure. When the 5 solenoid valves were inspected, the solenoid valve itself was found to be normal, but iron chips were found in the air path of the nitrogen-223 solenoid valve.
The above is an analysis of the external ultrasonic level switch fault treatment method, and we hope to attract everyone's attention. Of course, after everyone has grasped the external ultrasonic ultrasonic level gauge troubleshooting methods, they must consult the relevant experts.
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