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Vortex flowmeter use notes instructions

1. On-site installation is completed before power-on and pre-flow inspection
1) There should be no leakage in the flanges, valves, pressure measuring holes, temperature measuring holes and joints on the main pipe and the bypass pipe;
2) Whether the pipe vibration condition meets the requirements of the specification;
3) Whether the sensor is installed correctly and the electrical connection of each part is good.
2, turn on the power supply static debugging
The converter should have no output when the current is not flowing, the instantaneous flow indication is zero, and the cumulative flow does not change. Otherwise, first check whether the interference signal is introduced due to poor signal line shielding or grounding, or strong pipeline vibration. If it is not the above reasons, the potentiometer in the converter can be adjusted to reduce the amplifier gain or increase the trigger level of the shaping circuit until the output is zero.
3, through-flow dynamic debugging
The bypass valve is closed to open the upstream and downstream valves. After the flow is stabilized, the converter outputs a continuous pulse with uniform pulse width. The flow indication is stable and there is no jump, the valve opening is adjusted, and the output changes accordingly. Otherwise, the potentiometer should be carefully checked and adjusted until the meter output is false and no leakage.
4, meter coefficient correction
The meter coefficient of the vortex flowmeter is verified under laboratory conditions. The working conditions at the time of use deviate from the laboratory conditions to correct the meter factor.

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