A+KAs a high-quality supplier of the new generation of velocity flow meters, ultrasonic flow meters play an important role in industrial flow measurement due to their high precision, wide range, and explosion-proof applicability. It is crucial to develop a scientific high-precision maintenance plan to ensure its long-term stable operation and measurement accuracy.

1、 Daily cleaning and inspection

Sensor cleaning: The sensor emission surface is prone to accumulating coupling agents, scale, or impurities, which can attenuate ultrasonic signals and affect measurement accuracy. It is recommended to3Use a soft cloth dipped in alcohol to wipe the sensor emission surface every month. Do not use metal tools to scrape to avoid damaging the sensor surface. For external clamp flow meters, it is necessary to6Apply specialized acoustic coupling agent every month to ensure coupling effect.

Appearance inspection: Regularly check whether the flowmeter body and sensor cable protection layer are intact, whether there is corrosion, water accumulation or damage. At the same time, check whether the sealing ring of the transmitter junction box is aging, and confirm that there is no water ingress after rain, even if there isIP65The above protection levels should also be checked regularly.

2、 Regular calibration and calibration

Data comparison: Compare the instantaneous flow displayed by the flowmeter with historical data or other high-precision instruments every month. If the deviation exceeds3%It is necessary to promptly investigate the cause and make adjustments.

Real flow calibration: It is recommended to calibrate every12-24Perform real flow calibration once a month for accuracy requirements±0.5%The occasion should be calibrated once a year. Portable ultrasonic flow meters can also be used for comparison and verification to ensure measurement accuracy.

3、 Installation environment and parameter optimization

Installation location selection: The flowmeter should be installed at a sufficient position in the straight pipe section, and the length of the upstream straight pipe section should be sufficient≥15Double the diameter of the pipe（D）, downstream≥5DAvoid installing in areas such as pump outlets, elbows, valves, etc. that generate eddy currents, as well as at the top (where bubbles can accumulate) and bottom (where impurities can deposit) of pipelines.

Accurate parameter input: When initializing the flowmeter, it is necessary to accurately input parameters such as pipeline outer diameter, wall thickness, material, lining thickness, etc. The measured error should be controlled within0.1mmWithin. At the same time, adjust the sound velocity parameters according to the composition of the medium, perform zero flow calibration after startup, and ensure the accuracy of the measurement benchmark.

4、 Fault prevention and emergency response

Signal quality monitoring: Regularly check the flow meter signal strength and transmission time ratio to ensure signal strength>80%The transmission time is longer than before0.98-1.02Within the scope. If the signal is abnormal, it is necessary to promptly investigate reasons such as sensor installation, coupling agent status, or changes in medium characteristics.

Antifreeze and heat tracing: In low-temperature environments, if the pipeline temperature is below0℃It is necessary to install a heat tracing strip for the sensor to prevent icing from affecting the measurement. However, it should be noted that the heat tracing tape should not wrap around the transmitter to avoid overheating and damaging electronic components.