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Pressure

Working Group 3.33

Measuring devices and measurement uncertainties

Calibration of devices for measuring the absolute pressure and gauge pressure, using gas as pressure medium 1 kPa bis 2 MPa 0.2 Pa + 2 • 10-5 • p
Calibration of devices for measuring small atmospheric pressure differences 0.1 kPa bis 3 kPa 0.05 Pa + 6 • 10-5 • pe
Calibration of gauge pressure measuring devices, using gas as pressure medium 2 MPa bis 8 MPa 3 • 10-5 • pe
8 MPa bis 20 MPa 4 • 10-5 • pe
Calibration of gauge pressure measuring devices, using oil as pressure medium 0.2 MPa bis 400 MPa 10 Pa + 2.2 • 10-5 • pe + 2 • 10-13 • pe2
400 MPa bis 1 GPa 3 • 10-5 • pe + 2 • 10-13 • pe2
1 GPa bis 1.4 GPa 4 MPa

The measurement uncertainties stated are related to the most accurate commercial measuring devices and to the calibration effort normal for such devices. They are not identical with the smallest measurement uncertainty achievable.