Abstract: the flow meter scale straight pipe upstream and downstream demand information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. GB 50093 ━ 2002 since the instrument table work shi cheng and test charge rules of flowmeter in van straight pipe upstream and downstream usually require is as follows: the rotor flow meter, the upstream is not less than 0 ~ 5 times the pipe diameter, the downstream without requirements; The target flowmeter, upstream not less than five times the tube. More flow meter manufacturers choose model price quote you are welcome to inquire, here is a meter scale straight pipe upstream and downstream demand article details. GB 50093 ━ 2002 since the instrument table work shi cheng and test charge rules of flowmeter in van straight pipe upstream and downstream usually require is as follows: & ndash; — Upstream rotor flowmeter, not less than 0 ~ 5 times the pipe diameter, the downstream without requirements; — — Target flowmeter, not less than 5 times the pipe diameter, upstream downstream is not less than 3 times the pipe diameter; — — Turbine flowmeter, not less than 5 ~ 20 times the pipe diameter, upstream downstream is not less than 3 ~ 10 times the pipe diameter; — — Vortex street flowmeter, upstream is not less than 10 ~ 40 times the pipe diameter, the downstream is not less than 5 times the pipe diameter; — — Electromagnetic flowmeter, the upstream is not less than 5 ~ 10 times the pipe diameter, the downstream is not less than 0 ~ 5 times the pipe diameter; — — Ultrasonic flowmeter, the upstream is not less than 10 to 50 times the pipe diameter, the downstream is not less than 5 times the pipe diameter; — — Displacement meter, no requirements; — — Upper orifice, not less than 5 ~ 80 times the pipe diameter, the downstream is not less than 2 ~ 8 times the pipe diameter; — — Nozzle, the upstream is not less than 5 ~ 80 times the pipe diameter, the downstream is not less than 4 times the pipe diameter; — — Venturi pipe, elbow, wedge, not less than 5 ~ 30 times the pipe diameter, upstream to downstream is not less than 4 times the pipe diameter; — — Velocity-equalizing tube, not less than 3 ~ 25 times the pipe diameter, upstream to downstream is not less than 2 ~ 4 times the pipe diameter is above GB 50093 ━ 2002 since the instrument table work process and test charge gauge shi fan usually require of straight pipe upstream and downstream flow meter in concrete should be decided according to the requirement of the manufacturer. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.
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