Becker's vacuum gauge operated in the decremental mode

Various friction vacuum gauges were developed in the past. When electronically driven they were usually operated in continuous mode, because the electronics is easier. Present electronics enables operation in the decremental mode as well, thus extending the measuring range. This paper reports operat...

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Bibliographic Details
Published in:Vacuum 2002-09, Vol.67 (3-4), p.317-320
Main Authors: Gronych, T., Řepa, P., Peksa, L.
Format: Article
Language:English
Subjects:
Becker's vacuum gauge
Calibration curve
Decremental operation mode
Exact sciences and technology
Friction vacuum gauge
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Physics
Vacuum apparatus and techniques
Vacuum gauges
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Summary:Various friction vacuum gauges were developed in the past. When electronically driven they were usually operated in continuous mode, because the electronics is easier. Present electronics enables operation in the decremental mode as well, thus extending the measuring range. This paper reports operation of Becker's vibrating ribbon gauge in the decremental mode. The vibration of the ribbon was excited by a series of current pulses derived from the natural frequency of the ribbon. When the desired amplitude of the ribbon was reached the excitation pulses were stopped and the damped harmonic signal was recorded. The computed time constant is the measure of the pressure. The gauge was calibrated over the range 10−5–103mbar. These measurements confirmed that in the decremental mode the lower pressure limit is decreased as compared to the original continuous mode.
ISSN:0042-207X
1879-2715
DOI:10.1016/S0042-207X(02)00215-4