A new image processing system for hydrometer calibration developed at CENAM |
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| Luis M. Peña, J. Carlos Pedraza |
- Abstract:
- The present work illustrates the improvements made to the hydrometer calibration sys-tem of CENAM, the NMI of Mexico, making use of an image processing technique to align the scale mark of the hydrometer to the surface of the liquid where it is immersed, reducing the variability in the apparent mass determination during the hydrostatic weighing in the calibration process, decreasing the relative uncertainty of calibration (k = 2) from 1 x 10-4 to 5 x 10-5 or better.
- Keywords:
- hydrometer, image processing, Cuckow’s method
- Download:
- IMEKO-TC3-2007-068u.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC3
- Event name:
- Cultivating Metrological Knowledge
- Title:
20th Conference on Measurement of Force, Mass and Torque (together with 3rd TC16 Conference on Pressure Measurement & 1st TC22 Conference on Vibration Measurement)
- Place:
- Merida, MEXICO
- Time:
- 27 November 2007 - 01 December 2007