Advantages and installation instructions of clamp-on ultrasonic flowmeter

Fixed clamp-on ultrasonic flowmeters are widely praised in the market for their accuracy, stability, and ease of operation. They are mostly used to measure the flow of large pipelines. They are easy to use. You only need to clamp the sensor on the pipeline in a prescribed manner to measure without breaking the pipeline, and the measurement accuracy is relatively accurate. The sensor probe with IP68 protection has a longer service life and can work stably within 5-6 years without replacement. Clamp-on ultrasonic flowmeters have high requirements for installers. The level of installation directly affects the measurement accuracy. There is a lot of maintenance work in the future. After long-term operation, the coupling agent fails or the position of the sensor changes, which will affect the measurement and require regular maintenance.

(I) Before installing the ultrasonic flowmeter, you should understand the site conditions, including:

1. How far is the sensor installation from the host?
2. Pipe material, pipe wall thickness and pipe diameter;
3. Pipe age;
4. Fluid type, whether it contains impurities, bubbles, and whether it is full;
5. Fluid temperature; (insertion sensor pipeline pressure)
6. Whether there are interference sources at the installation site (such as frequency conversion, high-voltage cable field, etc.);
7. The temperature of the host in all seasons;
8. Whether the power supply voltage used is stable;
9. Whether the remote signal is required and its type;

According to the above-mentioned on-site conditions, the manufacturer can configure it according to the on-site conditions, and can also make a special model if necessary.

(II) Select the installation location

The selection of the installation pipe section has a great influence on the test accuracy. The selected pipe section should avoid interference and eddy current, which have a great influence on the measurement accuracy. Generally, the selected pipe section should meet the following conditions:

1. Avoid installing the machine near water pumps, high-power radio stations, and frequency converters, that is, where there are strong magnetic fields and vibration interference;
2. The selected pipe material should be uniform and dense, and easy for ultrasonic transmission;
3. There must be a long enough straight pipe section. The upstream straight pipe section of the installation point must be greater than 10D (Note: D=diameter), and the downstream must be greater than 5D;
4. The upstream of the installation point should be 30D away from the water pump;
5. The fluid should fill the pipeline;
6. There should be enough space around the pipeline for on-site personnel to operate