Must the installation requirements of 10 in front and 5 behind the gas turbine flowmeter be met?
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Without installing a flow regulator in the pipeline, must the installation requirements of 10 units in front of and 5 units behind the gas turbine flow meter be met? If the flow meter manufacturer states that a configuration of 2 in front and 1 behind is sufficient to ensure accuracy, is it then still necessary to meet the requirement of 10 in front and 5 behind?
A turbine flowmeter is a velocity-type flowmeter; the values of 10 in front and 5 at the back are applicable when the process conditions permit it, and if these values are slightly off, it will not affect the accuracy.
It can be installed in accordance with the manufacturer’s instructions; **there are no specific regulations stipulated.
Specification: Turbine flowmeters should be installed in horizontal pipes free from vibration, and the lengths of the straight sections upstream and downstream should meet the design requirements. The exact length of the straight pipe section is not specified; the manufacturer’s specifications can be used.
Turbine flowmeters do not have as high requirements regarding straight pipe sections as orifice plates and vortex flowmeters do. Their measurement principle involves detecting the flow velocity of the fluid in order to indirectly determine the flow rate, which is different from the measurement principles of other flowmeters. As long as they are installed in accordance with the relevant installation guidelines, there should be no problems, and the requirements for straight pipe sections are not very high