The influence of turbine flowmeter installation on its measurement accuracy

Usually, the installation of the turbine flowmeter has a great impact on its measurement accuracy. Therefore, during the installation process, the installation requirements must be strictly followed to avoid accuracy errors that affect the work quality.

1. In industrial measurements, the straight pipe length of the turbine flowmeter is generally required to be 20D upstream and 5D downstream, so as to ensure the accuracy. At the same time, installing a rectifier at the upstream end can eliminate the problems of uneven flow velocity distribution and secondary flow, so that the measurement accuracy can reach the accuracy level during calibration.

2. If necessary, a degasser should be installed upstream of the flowmeter. For liquids that are easily vaporized, a certain back pressure must be guaranteed downstream. In this way, air or steam will not enter the flowmeter, thereby ensuring that the liquid passing through the flowmeter is single-phase.

3. It is best to install a filter in front of the flowmeter. A funnel-type filter can be used to ensure its own cleanliness, which can be obtained by measuring the differential pressure change at both ends. (end)