ROTARY GAS METER WORKING CONDITION MONITORING SYSTEM AND A ROTARY GAS METER HAVING A ROTARY GAS METER WORKING CONDITION MONITORING SYSTEM
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United States of America Patent
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Issued Date -
Aug 26, 2021
app pub date -
Feb 18, 2021
filing date -
Feb 26, 2020
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A working condition monitoring system for a positive displacement rotary flow meter determines flow rate and differential pressure information for logging to determine a history of such data for a meter in the field. Deviation from good working data established for the meter model may be used such as to indicate maintenance and/or repair needs. Mechanical or other wear in a meter may lead to higher differential pressure measures for a given flow rate (or a lower measured flow rate for a given differential pressure) than is true for a meter in good working order. A corrective factor responsive at least to a current different pressure may be applied to correct a measure of flow rate that is determined in response to a measure of impeller rotation to account for additional flow of gas through the meter that is not driving the impeller(s).
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