| dc.description |
Primary standard piston gauges are frequently used to perform pressure comparisons, but at other times, and particularly in the pressure range greater than 300 MPa, suitable transfer standards are used for the same purpose. The IMGC and the NIST have completed a bilateral intercomparison for gauge pressure measurements in liquid media up to 600 MPa using a strain-gauge pressure transducer as the transfer standard. The main metrological characteristics of the transducer are discussed, particularly the stability with time and the uncertainty limits for use as a transfer standard. The pressure scale between 100 MPa and 600 MPa as maintained by the two laboratories is described, and the results of the comparison are discussed in order to demonstrate the agreement in pressure measurement between the IMGC and the NIST. |
