Several Kinds of Precession Whirlpool Meter Head Fault and Its Solution

First, precession vortex flowmeter head shows instantaneous flow, pressure is normal, temperature display does not match the temperature of the work site
1. The temperature indication is "-75C" or exceeds "100°C". The temperature sensor is damaged. Replaceable sensor.
2. The temperature indication is above or below the actual temperature of the site. After the sensor is replaced, the phenomenon still remains. The temperature and pressure circuit is damaged. Replaceable temperature and pressure circuit.

Second, precession vortex flowmeter meter without display
1, the flow meter without 24V power supply or battery power. Supply 24V power to the flowmeter or replace the flowmeter battery.
2. The flow meter panel is damaged. Replace the flow meter LCD panel.
3, flow meter board is damaged. Replace the flow meter board.
4, the power wiring is wrong or broken. Find and reconnect.

Third, precession vortex flow meter header temperature, instantaneous flow display, pressure does not match the actual working pressure indicator
1. If the pressure indicator is “80” or the “upper pressure limit” of the flowmeter (the upper limit can be found in the flow meter selection reference table).
One is to 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. Replaceable pressure sensor. The second is the external half of the new pressure sensor. If the meter still shows “80”, it proves that the flowmeter motherboard is bad. Replaceable flow meter board.
2. The pressure indication is basically a certain value (the on-site working pressure changes greatly, and the flowmeter meter shows that the pressure does not change or change little).
One is that pressure sensors take pressure holes. Can clear the pressure hole. The second is that the linear calibration curve of the pressure sensor deteriorates. The pressure sensor can be replaced or recalibrated.

Four, precession vortex flow meter head shows normal temperature and pressure, no instantaneous flow rate display
1, the flow meter selection is too large, over-type selection caused by the flowmeter no flow display.

One is to lower the lower cutoff frequency of the flowmeter (this allows the flowmeter to be used, but it will cause the flowmeter to be less accurate). The second is to replace the small size flowmeter.
2. The preamplifier has no current input. The flowmeter has no power supply and is used for 24V external power supply or battery power supply.
3, preamplifier no frequency output. Replaceable preamplifier.
4, the main precession vortex flowmeter board is damaged. Replaceable flow meter board.

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