NEW WAY OF ACCURACY IMPROVEMENT FOR THE PNEUMATIC DEADWEIGHT TESTER V1600
|M. Bryant, N. Moisoi, S.M.Kesselman|
- The V1600 is a compact portable pressure balance suitable for applications where a large number of high accuracy calibrations in ranges from 20 Pa up to 16 kPa, need to be performed on a daily basis.
Calibrations performed at VNIIMS, LNE, MIKE, NIST and PTB have shown the uncertainty of the V1600 is less than 0.1 Pa below 500 Pa and 0.02% of reading from 500 Pa to 16 kPa.
An important part of the uncertainty of the instrument within the range 500 Pa to 16 kPa has been caused by a methodical error of the procedure applied to its calibration until now.
This paper presents the original manner of detection and elimination of the above-mentioned systematic error.
This new calibration approach is based on the equality of Eulerian criterion of the actual device with its mathematical model and allows an increase of the calibration accuracy with approximately 1,5 – 2 times for pressures above 500 Pa.
- deadweight tester, accuracy, calibration
- Event details
- Event name:
- XVII IMEKO World Congress
Metrology in the 3rd Millennium
- Dubrovnik, CROATIA
- 22 June 2003 - 28 June 2003