Accurate measurement of pressure |
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Authors: | J K N Sharma K K Jain |
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Institution: | (1) National Physical Laboratory, 110012 New Delhi, India |
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Abstract: | This paper briefly describes the fundamental principles of the instruments used for accurate measurement of hydrostatic pressure
and in particular the use of piston gauges as primary pressure standards. Different methods for the calibration of secondary
standards have been discussed and in particular, emphasis has been given to the calibration of secondary piston gauges against
the primary standards by the cross-float method along with the evaluation of uncertainties attached to different correction
factors associated with the measurement of pressure from these gauges. The importance of secondary pressure standards in the
region 0.1 GPa to several GPa has also been defined. |
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Keywords: | Pressure standards piston gauge pressure measurements transducers |
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