Compared with the ultrasonic flowmeter of the external clamp-type and the plug-in type, there are no complicated installation steps and any subsequent maintenance work. To avoid the measurement error caused by improper installation caused by human factors, the selection of pipe segment ultrasonic flowmeter needs to pay attention to the acceptance problem:
1. Confirm the diameter of the pipeline, due to different pipe materials and wall thickness, the outer diameter of the pipeline will be different, so the selection of the diameter of the pipeline ultrasonic flowmeter is generally selected according to the inner diameter of the pipeline;
2. Select the number of ultrasonic flowmeter channels, the time difference ultrasonic flowmeter is to measure the speed of the closed pipeline medium, the medium flow rate of different levels in the large pipeline will be different, so some measurement sites need to use multi-channel ultrasonic flowmeter, such as dual channel ultrasonic flowmeter, four-channel ultrasonic flowmeter, and the general small-caliber pipeline, When measuring some ordinary media, the mono ultrasonic flowmeter can meet the requirements;
3. To determine the nominal pressure of the pipeline, the pipe segment ultrasonic flowmeter can be designed according to the pipeline design requirements, and the shell material of the pipe segment ultrasonic flowmeter selected for different pressure levels will also be different;
4. It is necessary to pay attention to whether the ultrasonic pipe length has special requirements. The selection of pipe segment ultrasonic flow timing should pay attention to the distance between flanges and flanges, especially to replace the old equipment and reserve the installation position of the pipeline, if the position has been reserved, it is explained when selecting the order, otherwise it is likely to cause the product is not applicable. If it is a new pipeline installation, it can be installed after the flow meter arrives at the site.
In addition to the above aspects, the pipe segment ultrasonic flowmeter should also pay attention to the measurement medium and medium temperature, minimum flow, common flow, maximum flow, etc., and whether there are special requirements for output power supply.
