Inter-laboratory Pressure Comparison Measurement In Gas Medium at ± 150 hPa Range

Results of interlaboratory comparisons and proficiency tests are a significant parameter for the calibration and testing laboratories for assuring the quality of test and calibration results performed by those laboratories. Accredited and non-accredited laboratories that have a quality system for their working areas are expected to join into inter-comparisons and proficiency tests in certain periods to show a degree of equivalence among the participant laboratories and assure their service quality. The necessity of participating in comparison measurements (ILC) and proficiency tests (PT) are stated in the EN ISO/IEC 17025:2017 International Standard that accredited laboratories or laboratories applying for accreditation must participate in ILC and PT from parameters related to measurement quantities within the scope of accreditation and have achieved successful results, and it is also a requirement sought by accreditation bodies. This study gives the organisation steps and the obtained results of a bilateral pressure comparison measurement of digital pressure gauge in the hydraulic medium between UME and an accredited laboratory in industry between ± 150 hPa.