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US 6,293,157 B1Granted
Compensation of coriolis meter motion induced signal
AssigneeGraco Minnesota Inc.
InventorsYamin Ma, James D. Adams, Thomas J. Brennan
Life of this patent
Estimating the term…
Abstract
The output of a coriolis flow meter is corrected for motion by subtracting the motion portion of the signal from a lookup table or a second dry meter.
Claims3
A system for measuring a flow of a fluid moving coriolis meter, the system comprising:
- a moving object;
- a fluid source;
- a first coriolis meter mounted to said moving object and connected to a said fluid source for flow measurement, said first coriolis meter providing an output,
- a second coriolis meter connected to said moving object adjacent said first meter, said second meter not being connected to a fluid source, said second coriolis meter providing an output, and
- subtracting the output of said second meter from said output of said first meter to provide an accurate indication of flow.
2 more elements
A method for measuring a flow of a fluid, the method comprising the steps of:
- mounting a first coriolis meter to a moving object and connecting said first meter to a fluid source for flow measurement, said first coriolis meter providing an output;
- mounting a second coriolis meter to said moving object adjacent said first meter, said second meter not being connected to said fluid source, said second coriolis meter providing an output;
- and
- subtracting the output of said second meter from said output of said first meter to provide an accurate indication of flow.
1 more element
A method for measuring a flow of a fluid meter, the method comprising the steps of:
- mounting a coriolis meter to a moving object and connecting said meter to a fluid source for flow measurement, said coriolis meter providing output;
- moving said moving object through a predetermined pattern while no fluid is flowing through said meter and recording a resulting no flow output of said meter over time through said pattern;
- moving said moving object through a predetermined pattern while fluid is flowing through said meter to provide a flow output and subtracting said no flow output from said flow output at equivalent positions in said pattern to provide an accurate indication of flow.
Dependencies are inferred from the claim text.