Gas meter calibration device for hydrogen-oxygen mixtures
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United States of America Patent
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Dec 7, 1999
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N/A
app pub date -
Nov 6, 1997
filing date -
Nov 6, 1996
priority date (Note) -
Expired
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Abstract
In order to provide a gas meter calibration device for hydrogen-oxygen mixtures which comprises a connection for a gas meter such that it enables a gas meter for hydrogen-oxygen mixtures to be accurately calibrated, it is proposed that a hydrogen-oxygen mixture can be produced in a mixing zone with oxygen from an oxygen gas store and hydrogen from a hydrogen gas store, and that the composition of the hydrogen-oxygen mixture can be adjusted by means of at least one mass flow regulator, with a control system checking and ensuring that the foreign gas concentration of hydrogen or oxygen in the mixture lies below the lower explosion limit.
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