Fluctuating flow
Fluctuating flow
(OP)
Fluctuating flow (e.g discharge of PD pumps) effects the performance of differential pressure flow meters ? Other type of flowmeter better for measuring pulsating flow ?
John165
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RE: Fluctuating flow
A Coriolis meter or a positive displacement meter are most likely better selections. The choice of meter will depend on the accuracy required and the fluid properties.
http://info.smithmeter.com/literature/docs/tp0a014...
RE: Fluctuating flow
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RE: Fluctuating flow
RE: Fluctuating flow
RE: Fluctuating flow
John165
RE: Fluctuating flow
I've had good results from turbine meters downstream of duplex and triplex plunger pumps. It seems that the inertia of the rotor tends to average pulse magnitude to some extent. Nothing will make a dP or Coriolis meter give you repeatable or verifiable results downstream of a duplex or triplex plunger pump (although Coriolis meters seem to work well downstream of a quintiplex pump).
David Simpson, PE
MuleShoe Engineering
In questions of science, the authority of a thousand is not worth the humble reasoning of a single individual. Galileo Galilei, Italian Physicist
RE: Fluctuating flow
RE: Fluctuating flow
RE: Fluctuating flow
RE: Fluctuating flow
RE: Fluctuating flow
David Simpson, PE
MuleShoe Engineering
In questions of science, the authority of a thousand is not worth the humble reasoning of a single individual. Galileo Galilei, Italian Physicist
RE: Fluctuating flow
pd pumps are mostly small liquid pumps
RE: Fluctuating flow
Bimr ! Am not sure , But I think it should be 1 % Full scale.
John165
RE: Fluctuating flow
RE: Fluctuating flow
That works as long as the "chamber" is full every time. I've gotten errors from both neutating disks and turbine meters from flow that was pulsing enough to spin them faster than they could fill. Generally a problem with a discharge to atmosphere through a variable nozzle that was opened too much.
David Simpson, PE
MuleShoe Engineering
In questions of science, the authority of a thousand is not worth the humble reasoning of a single individual. Galileo Galilei, Italian Physicist