Pressure & Vacuum

The pressure laboratory is equipped with a 0.008% air dead weight tester with a range from -1 to 25bar and a 0.008% hydraulic dead weight tester with a range of 0 to 700bar with an oil/water converter. This equipment gives us the ability to calibrate a wide range of precision pressure transducers, transmitters, digital and analogue pressure gauges, vacuum gauges, barometers and multifunction pressure calibrators to a best uncertainty of 0.008%. We also have a 0.04% pressure calibration system with a range of 0.95 to 200bar with oxygen free nitrogen. Calibration of low pressure measuring instruments is achieved using a Furness PPC500 which covers pressure between the ranges of 200microbar to 20 mbar with uncertainities of (0.11% +0.3microbar). UKAS Pressure Uncertainties Measured Quantity Best Measurement Capability Gas Pressure (Gauge) -100 kPa to -10 kPa 0.010% -10 kPa to -3.5 kPa 0.020% -3.5 kPa to -1.5kPa 0.020% + 1.5 Pa -1.5 kPa to 0 kPa 0.050% + 82 Pa 0 kPa to 1.5 kPa 0.050% + 42 Pa 1.5 kPa to 3.5 kPa 0.020% + 1.5 Pa 3.5 kPa to 2.5 MPa 0.0080% 2.5 MPa to 6 MPa 0.050% + 2.7 kPa 6 MPa to 25 MPa 0.050% + 13 kPa Hydraulic Pressure (Gauge) 0 to 600 kPa 0.050% + 810 Pa 600 kPa to 6 MPa 0.010% 6 MPa to 70 MPa 0.010%