Comparison of hydraulic pressure balance effective area determination in the range up to 80 MPa

Project Description

Bilateral comparison is organised between the Laboratory for Process Measurement of the Croatian Metrology Institute (HMI/FSB-LPM) and the Pressure Laboratory of the Directorate of Measures and Precious Metals of the Republic of Serbia (DMDM). Laboratory for Process Measurement of HMI will act as the pilot laboratory. The aim of the comparison is to evaluate the degree of equivalence in the determination of effective area and elastic distortion coefficient, considering respective uncertainties of the two laboratories. Measurements will be done on the pressure balance in gauge mode, with oil as transmitting medium, in the range 10 - 80 MPa.

Final Report 2018-04-08

The comparison has been completed and results are published in the KCDB.

Bilateral comparison was organized between the Laboratory for Process Measurement of the Croatian Metrology Institute (FSB-LPM) and the Pressure Laboratory of the Directorate of Measures and Precious Metals of the Republic of Serbia (DMDM) in 2015. Laboratory for Process Measurement of HMI acted as the pilot laboratory. The aim of the comparison was to evaluate the degree of equivalence in the determination of effective area and elastic distortion coefficient, considering respective uncertainties of the two laboratories. Measurements were done on the pressure balance in gauge mode, with oil as transmitting medium, in the gauge pressure range 10 - 80 MPa in 2016. The results of the comparison successfully demonstrated that the hydraulic gauge pressure standards are equivalent within their claimed uncertainties.
Final report sent to CCM-WG PV for comments on the 22 March 2018.