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Title: A Unique, Large, Gas Flow Meter Calibration Facility And Its Comparison With Other Facilities
Author: Dr. Winston F. Z. Lee
Source: 1990 International Symposium on Fluid Flow Measurement
Year Published: 1990
Abstract: It is desirable to calibrate a gas turbine meter at conditions as close as possible to the conditions under which the meter is to operate. This paper describes a unique, large, gas flow meter calibration facility which is capable of variable calibration pressures from atmospheric to 6550 kPa gage (950 psig), and of handling meter sizes up to 300 mm (12 in.). The calibration facility consists of a 14.2 m (500 ft ) bell prover system as the primary flow standard, and calibrated self-adjusting turbine meters operating in an externally pressurized, recirculating air loop, as secondary transfer flow standards. Methods to develop these secondary transfer flow standards, including calibration principles and procedures, are described with an illustrative example. This paper also presents accuracy comparisons of turbine meter test data from this calibration facility and each of nine other well recognized gas flow meter test facilities of different calibration principles. Their very good agreement (all within 0.2%) provides verification of the high accuracy calibration of this facility.




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