What should I do if the glass rotameter meter does not display?
Dec 11, 2021
The glass rotameter is a commonly used flow meter. Its results are mainly displayed by the meter. If the instrument panel does not display, it will cause the work of the entire instrument to stop. Then, how do we solve this problem?
1) There is no display on the field instrument
1. The LCD screen of the glass rotor flowmeter is not bright, and there is no display. First check whether the power supply of the instrument is normal, and then check whether the wiring is correct. If the circuit or circuit board is in poor contact, you can reinstall the fastening screws or plug in the circuit board to have a try.
2. The pointer does not move. Using the principle of magnetic coupling, the upper and lower relative positions of the on-site remote control display part and the rotor part can be changed, and the moving position of the rotor can be simulated. When the display part is moved, the pointer can change the display normally, which proves that the display part is normal. If the pointer cannot change the display, check whether the remote display and signal power supply are faulty. If the pointer is deformed and loose, the glass panel is damaged, or the pointer is stuck, there is no display on the field instrument. You can adjust and replace the pointer or replace the glass panel.
2) There is no display on the instrument in the control room.
No display in the control room means that the remote glass rotameter has a current signal output, but the instrument in the control room has no display. The concept of circulation is used to analyze, judge and find fault points. The field tester is used to check the instruments, fixtures and isolation barriers in the control room. Send a current signal from the input terminal of the meter, and measure whether the current signal at the output terminal is normal. Most of the faults can be found through testing. If you suspect that there is a problem with the circuit board, you can replace the same spare part to determine the fault.
