The disadvantages of using insertion vortex flow meters

Project Overview

There are two types of vortex flowmeters: pipeline type and plug-in type. The plug-in type only needs to open a hole in the pipe; while the pipe type requires cutting the original pipe and setting aside a small section to connect the pipe flow meter. ; In terms of installation complexity, the plug-in type is simpler and more convenient, and can achieve non-flow installation.

However, in actual use, pipeline vortex flowmeters are more commonly used. Mainly, the plug-in vortex flowmeter has the following disadvantages:

1. Flow velocity distribution affects measurement accuracy Influence: The flow velocity distribution in the pipeline has a great impact on the measurement accuracy of the insertion vortex flowmeter. In order to obtain accurate measurement results, it is usually necessary to ensure that the length of the straight pipe section upstream of the flow meter reaches 30D~50D (D is the pipe diameter), which is difficult to achieve in some situations with limited installation space.

   

2. Influence of complex on-site conditions: The application of insertion vortex flow meters is greatly affected by on-site conditions. For example, impurities and bubbles in the pipeline will affect the measurement results. . In addition, complex environmental factors (such as temperature, pressure changes, etc.) may also cause measurement accuracy to decrease.

3. Limitations in measurement accuracy: Although the insertion vortex flowmeter has been optimized in design, its measurement accuracy is still subject to certain limitations. Under normal circumstances, its measurement accuracy can only reach the range of ±(3~5%), which may not be ideal for some occasions with high accuracy requirements.

The above effects are very limited for flow measurement, so the use of insertion vortex flowmeters is generally not recommended.