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Calibration range and CMC for pressure measurement instruments

Calibration of absolute pressure measurement instruments:

Measurement rangeMeasurement uncertainty CMC*
(200 ÷ 1300) hPa0,11 hPa

Calibration of relative and differential pressure measurement instruments:

Measurement rangeMeasurement uncertainty CMC*
(0 ÷ 7,5) kPa0,001 kPa
(7,5 ÷ 70) kPa3,0 · 10-4 · p + 0,002 kPa
p kPa
(70 ÷ 200) kPa2,2 · 10-4 · p + 0,006 kPa
p kPa
We conduct calibrations in the range of positive pressure (+) and negative pressure (-) from 0 to 200 kPa. More information about the applied method is available on our laboratory’s website: Calibration of pressure measurement instruments – method

* The Calibration and Measurement Capability (CMC) presented within the scope of accreditation, representing the expanded uncertainty at a confidence level of approximately 95%, is defined as the smallest measurement uncertainty that a laboratory can achieve during the routine calibration of objects. It is established based on uncertainty budget analyses conducted during calibrations using the most accurate measuring instruments available for calibration. CMC represents the smallest value of expanded uncertainty related to the calibration result (the obtained difference between the measured quantity value and the value indicated by the calibrated instrument) that can be provided on the calibration certificate. For different calibration conditions and different instruments, the expanded uncertainty stated on the certificate may be larger.