SUBDIVISION METHOD APPLIED FOR OIML WEIGHTS USING AN AUTOMATIC COMPARATOR |
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| Adriana Valcu, Dumitru Dinu |
- Abstract:
- According to International Recommendation OIML R 111, the weights of nominal values greater than 1 g may have a cylindrical shape with a lifting knob. Taking into account this kind of shape and that in the case of an automatic comparator, with the maximum capacity of 1 kg, the diameter of weighing pan is quite small for placing a group of weights from 500g to 100g, the subdivision method can’t be applied for the calibration of weights.
By using the subdivision method presented in this paper, the cylindrical weights with a lifting knob, having nominal values from 500g to 100 g are calibrated using an automatic comparator (which is not foreseen with weight support plates).
The method can be used for E1 weights, when the highest accuracy is required.
Uncertainty obtained in this case for the unknowns weights is better than that obtained usually for E1, being at the level acquired for reference standards. - Keywords:
- subdivision of the kilogram, mass calibration, automatic comparator
- Download:
- IMEKO-WC-2009-TC3-149.pdf
- DOI:
- -
- Event details
- Event name:
- XIX IMEKO World Congress
- Title:
Fundamental and Applied Metrology
- Place:
- Lisbon, PORTUGAL
- Time:
- 06 September 2009 - 11 September 2009