Aim : On completion of this unit you will be able to check the accuracy of a Bourdon tube pressure gauge using dead weight tester. Theory : Many types of gauges are available for measurement of pressure. The Bourdon gauge (named after its inventor Bourdon) uses the deflection of a tube of oval cross-section to cause a pointer to move over a scale. Because of its simplicity and low cost, and the large selection of pressure ranges, which are available, the Bourdon gauge is widely used engineering practice. All pressure gauges, of whatever type, needs to be calibrated. As the calibration may change over a period, repeat calibrations may well be needed from time to time. The normal calibration procedure is to load the gauge with known pressures, using a dead weight tested using oil. The present experiment, however, works satisfactorily with oil. In this experiment we check the accuracy of the Bourdon Tube pressure gauge. The procedure will be to calibrate the gauge by applying weight...
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