INVESTIGATION OF CHARACTERISTICS OF 133 Pa CDG USING PRESSURE BALANCE |
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| SamYong Woo, InMook Choi |
- Abstract:
- The purpose of this paper is to investigate the characteristics of precise low-pressure gauges such as Capacitance Diaphragm Gauge (CDG) devices in the range 133 Pa using a commercial gas-operated pressure balance. Generally the pressure balance is not adequate to calibrate such low pressure gauges as the minimum pressure to balance the tare weight corresponds to a pressure of several kilopascals. However using a variable bell-jar pressure method can overcome this difficulty. To realize this method effectively, we developed a new weight-handling device that makes it possible to add or remove weights easily. This apparatus is very useful to find the characteristics of such low-pressure gauges. Moreover, one of the greatest benefits of this method is the traceability to link directly to the gas pressure standard that is easily traceable to the national standard.
- Keywords:
- CDG, pressure balance, characteristics
- Download:
- PWC-2006-TC16-009u.pdf
- DOI:
- -
- Event details
- Event name:
- XVIII IMEKO World Congress
- Title:
Metrology for a Sustainable Development
- Place:
- Rio de Janeiro, BRAZIL
- Time:
- 17 September 2006 - 22 September 2006