What are the requirements for the straight pipe section of a vortex flowmeter?

Project Overview

The vortex flowmeter is a common flow instrument. In order to ensure the accurate and stable measurement of the vortex flowmeter, when installing it, pay attention to the length of the straight pipe sections before and after the flowmeter.

1. The general requirements for the front and rear straight pipe sections of a vortex flowmeter are: 20D in the front and 5D in the back (D is the inner diameter of the connected process pipeline). The valve is generally designed on the downstream side of the flowmeter.

2. When the flow meter is installed at the outlet of the compressor, blower, or plunger pump, a valve needs to be installed on the upstream side of the flow meter. In order to ensure the measurement accuracy of the flow meter, in addition to the length of the upstream straight pipe section being no less than 20D, it is best to install a flow limiting or buffering device on the upstream side, as shown in Figure 1:

3. For different For process pipelines, the length requirements of the front and rear straight pipe sections are different, as shown in Figure 2:

4. Temperature, pressure and other source components should be installed on the downstream side of the vortex flowmeter, and the distance requirements are as shown in Figure 3 Indicates:

In addition, there should be no large vibration source near the installation site of the vortex flowmeter; it cannot be installed near large transformers, motors, pumps and other equipment that generate large magnetic fields to avoid being interfered by electromagnetic fields; When the sensor is connected to the pipe, it should be ensured that the pipe is full, and it is best to install it vertically. For more questions about flow meters, please feel free to contact Supmea Measurement and Control~