First, the vortex flow meter head shows the instantaneous flow rate, the pressure is normal, and the temperature display does not match the temperature of the work site.
1. The temperature indication is “-75C†or exceeds “100°Câ€.
The temperature sensor is damaged. The sensor can be replaced.
2. The temperature indication is above or below the actual temperature of the site. This phenomenon is still the case after replacing the sensor.
The temperature circuit is damaged. The temperature and voltage circuit can be replaced.
Second, the spiral vortex flow meter head has no display
1. The flow meter has no 24V power supply or battery power supply. Charge the flowmeter 24V or replace the flowmeter battery.
2. The flowmeter LCD panel is damaged. Replace the flowmeter LCD panel.
3. The flowmeter motherboard is damaged. Replace the flowmeter motherboard.
4. The power supply wiring is incorrect or disconnected. Find and rewire.
Third, the swirling vortex gas flow meter head temperature, instantaneous flow has been displayed, the pressure does not match the actual working pressure indication
1. If the pressure indication is “80†or the flowmeter “pressure upper limit†(the upper limit can be found in the flowmeter selection reference table).
First, connect a new pressure sensor to see if the meter shows the local atmospheric pressure. If the local atmospheric pressure is displayed, the original sensor is damaged. The pressure sensor can be replaced. Second, the external half of the new pressure sensor, if the display is still "80", it proves that the flowmeter motherboard is broken. The flowmeter motherboard can be replaced.
2. The pressure indication value is basically a certain value (the field working pressure changes greatly, the flow meter head shows no change in pressure or less change).
First, the pressure sensor is blocked by the pressure hole. The pressure tapping hole can be cleaned. Second, the linear calibration curve of the pressure sensor deteriorates. The pressure sensor can be replaced or recalibrated.
Fourth, the spiral vortex flow meter head shows normal temperature and pressure, no instantaneous flow display
1. The flowmeter is selected too large, and the selected flow will cause the flowmeter to display no flow. First, lower the flowmeter lower limit cutoff frequency (so that the flowmeter can be used, but it will cause the flowmeter accuracy to decrease). The second is to replace the small size flow meter.
2. The preamplifier has no current input. The flowmeter has no power supply and is powered by a 24V external power supply or battery.
3. The preamplifier has no frequency output. The preamplifier can be replaced.
4. The main vortex flowmeter plate is damaged. The flowmeter motherboard can be replaced.
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