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U.S. Department of Energy
Office of Scientific and Technical Information

Use of a piston prover for improved high pressure gasmeter calibration

Conference ·
OSTI ID:6773346
In the past decade, as a consequence of the increasing price of energy, a strong demand for higher accuracy in gas-flow measurement has arisen. A method to achieve higher accuracy was the calibration of the existing flowmeters with gas under operating conditions. To carry out these calibrations test facilities have been built and reference meters have been manufactured. One of the consequences of the availability of improved testfacilities was that the meter manufacturers began to improve their products which resulted in a better linearity of the meters and a further increase of the repeatability. The use of a primary device operating at approximately the same pressure as the secondary standard to be calibrated can reduce the uncertainty in the calibration results and can reduce the time and effort required to maintain the required accuracy by as much as fifty percent. This primary device is a piston prover operating at the same pressure as the flow-meter to be calibrated. A review is presented of the route one follows between the decision to investigate whether a piston prover is applicable in this procedure and the moment at which the system is ready for service.
OSTI ID:
6773346
Report Number(s):
CONF-880603-
Country of Publication:
United States
Language:
English