Calibration of pump efficiency meters

Details Calibration of pump efficiency meters Calibration of pump efficiency meters

F - Mech Eng,Light,Heat,Weapons

03

B

F03B 11/00 (2006.01) G01D 18/00 (2006.01)

Patent

CA 2072586

2072586 9110065 PCTABS00006 A test rig for checking the uncertainty of a pump efficiency meter is mounted within a thermally insulated environment (1) and includes a fluid inlet chamber (2) and a fluid outlet chamber (3) connected by a pipe (11) incorporating a throttle valve (4). The chambers (2) and (3) each have locations for receiving the input pressure transducers (5) and (7) and input temperature transducers (6) and (8) respectively of the meter to be tested. The actual efficiency value (Ep) is measured by the meter using the thermodynamic principle as fluid flows and the uncertainty in the actual efficiency value is determined by the formula 100.(2a.Ep-1) where a is the isothermal value of the fluid.

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