How to determine whether the metal tube float flowmeter is faulty?

April 08 13:11:32, 2023

In the process of using the flowmeter, there will be more or less failures. Small problems have not been discovered. We do not know whether the flowmeters are out of order or where the problems are. In order to solve this problem, Summarized for the user as follows:
1. Slight pointer jitter: Usually induced fluctuations in the medium can be used to increase the damping method to overcome.
2. Gentle pointer jitter: The medium flow conditions that are typically caused, often due to unstable operating pressures, are gases.
Voltage or current regulator devices can be used to overcome or increase gas flow meter damping.
3. Serious pointer jitter: mainly due to medium pulse, pressure instability or the user's given gas pressure, temperature and flow of the operating state of the float flow meter does not meet the actual situation, there are major differences in the flow meter range.

Analysis of other faults and solutions:
One, no current output
1. First look at the correctness of the metal tube float flowmeter wiring.
2. If there is any display on the LCD, if there is no output, the output tube is mostly bad and the circuit board needs to be replaced.
3. Loss of calibration value. Due to the failure of the E2PROM, the calibration data of the meter will be lost and no output current will be caused, and the current will remain unchanged. Solution: The data recovery operation can be used. If it does not work, you can first set the data in password 2000, and then set the data in password 4011 by manually pushing the pointer to calibrate the data from RP to 100%.
Second, no live display
1. Check the wiring is correct.
2. Check if the power supply is correct.
3. Reinstall the LCD module and check for false contacts.

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