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1. Installation Introduction of Ultrasonic Flow Meter
Time difference ultrasonic flow meter is a competitive flow measurement method in the world today, with a measurement line accuracy of over 1.0%. Due to the diversity of the environment around industrial sites, especially pipelines, how to install and debug ultrasonic flow meters according to specific environments has become an important issue in the field of ultrasonic flow measurement. This regulation provides a detailed explanation of the installation details of ultrasonic flow meters, further demonstrating the advantages of their accuracy, reliability, and stability, greatly reducing maintenance work or even eliminating maintenance in the future. Before installing the ultrasonic flowmeter, it is necessary to understand the on-site situation, including: 1. What is the distance between the sensor installation location and the host; 2. Pipeline material, wall thickness, and diameter; 3. Pipeline lifespan; 4. Fluid type, presence of impurities, bubbles, and whether the pipe is full; 5. Fluid temperature; 6. Is there any interference source at the installation site (such as frequency conversion, strong magnetic field, etc.); 7. Temperature at the host placement location throughout the four seasons; 8. Whether the power supply voltage used is stable; 9. Whether remote transmission signals are needed and their types; Based on the on-site situation provided above, the manufacturer can configure according to the on-site situation and, if necessary, can also customize the model. The selection of installation pipe sections has a significant impact on testing accuracy. The selected pipe sections should avoid interference and eddy currents, which have a significant
1. Avoid installing machines in areas with strong magnetic fields and vibration interference such as water pumps, high-power radio stations, and frequency converters;
2、 The selection of pipes should be uniform, dense, and easy to transmit ultrasonic waves;
3、 To have a sufficiently long 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 sufficient space around the pipeline for on-site personnel to operate, and underground pipelines need to be equipped with testing wells. The testing wells are as follows: Ultrasonic flow meters generally have two probe installation methods, namely Z method and V method. However, when D<200mm and the on-site conditions are one of the following, Z method installation can also be used:
1. When the turbidity of the measured fluid is high and the signal cannot be received or is weak when measured by V method;
2、 When there is a lining on the inner wall of the pipeline;
3、 When the service life of the pipeline is too long and the inner wall is severely scaled; For pipelines with good conditions, even if D is slightly greater than 200mm, the V method can still be used for installation to improve measurement accuracy.
1、 Input the pipeline parameters into the instrument, select the probe installation method, and obtain the installation distance;
2、 On a h