Study on calibration procedure for differential pressure transducers
Abstract
The indications of some types of differential pressure transducers are affected by the calibration procedure such as pressurization sequence, the line pressure and environmental conditions: it is known that hysteresis, zero drifts and span readings of some transducers depend on those parameters. When the calibrated transducer is used as a working standard in another calibration, therefore, it is necessary to use the same procedure as previous calibration. Otherwise, the calibration results sometimes differ according to the measurement condition. As an example, the different calibration results obtained by two working standards which have different dependency on pressurization sequence are shown in the report. Also the line pressure dependency of a transducer was evaluated by changing the line pressure from 25 kPa to 175 kPa in the range of differential pressure from 1 Pa to 1000 Pa.
Event details
- Event
- Cultivating Metrological Knowledge
- Technical Committee
- TC16
- Place
- Merida, MEXICO
- Time
- 27 November 2007 - 1 December 2007
- Website
- http://www.cenam.mx/fyp/imeko2.html