BILATERAL COMPARISON IN PRIMARY VIBRATION CALIBRATION OF NPL, INDIA AND THE MODAL SHOP, USA.
Abstract
The paper presents a bilateral comparison for measurement of accelerometer sensitivity in frequency range from 0.1 Hz to 20 kHz between NPL, India and The Modal Shop, USA. Two artefacts were utilized for bilateral comparison, one PCB 353B04 sensor and another for the low frequency, PCB Q353B51 along with ICP sensor signal conditioner. The measurements were conducted in the low frequency range from 0.1 Hz to 100 Hz for the PCB Q353B51, while the PCB 353B04 sensor was used in frequency range 5 Hz to 20 kHz. The results of the bilateral comparison show an <i>E</i><sub> n</sub> value less than 0.5 for both the accelerometers. The comparison of results with PCB calibrated values shows a maximum deviation of 0.7 % at 0.1 Hz, which lies well within the measurement uncertainty stated at low frequencies.
Event details
- Event
- TC22 Conference 2014
- Technical Committee
- TC22
- Place
- Cape Town, SOUTH AFRICA
- Time
- 3 February 2014 - 6 February 2014
- Website
- http://conferences.imeko.org/index.php/tc3-5-22/2014