Ultrasonic Flowmeter

1. Fault phenomenon: The instantaneous flow of the ultrasonic flowmeter fluctuates greatly.

[cause of failure]: the signal strength fluctuates greatly, and the measured fluid itself fluctuates greatly.

[Troubleshooting]: Adjust the position of the probe, improve the signal strength, and re-select the position to ensure the working conditions of 5D after 10D.

two, fault phenomenon: external clamp type ultrasonic flowmeter signal strength is low.

[cause of failure]: the pipe diameter is too large or the pipe scale is serious.

[fault handling]: technical transformation for plug-in probe, flowmeter display is normal.

3. Failure phenomenon: After the plug-in ultrasonic flowmeter is used for a period of time, the signal strength decreases.

[fault reason]: may be offset probe or probe scaling.

[Troubleshooting]: Re-adjust the position of the probe and clean the emitting surface of the probe.

four, fault phenomenon: ultrasonic flowmeter boot no display.

[cause of failure]: the power supply attribute does not correspond to the instrument rating or the insurance is burnt out.

[Fault Handling]: Check whether the power supply attribute is consistent with the instrument rating. If the insurance is burnt out, replace the insurance.

five, fault phenomenon: ultrasonic flowmeter cannot be used under strong interference on site.

[cause of failure]: the fluctuation range of the power supply is large, or there is frequency converter or strong magnetic field interference or poor grounding.

[Fault Treatment]: Provide stable power supply to the instrument, install the instrument away from strong magnetic field interference such as frequency converter, and set the grounding wire in a standard way. The ultrasonic line is laid separately with shielded wire and power line, and then the magnetic ring isolation transformer is added to the power input.