Calibration cell for calibration of gaseous or non-gaseous fluid constituent sensors
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United States of America Patent
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Oct 20, 1987
Issued Date -
N/A
app pub date -
Aug 8, 1986
filing date -
May 22, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A reference liquid-containing calibration cell for the calibration of a sensor for measuring a gaseous or non-gaseous constituent parameter of a fluid includes a chamber containing the reference liquid. The chamber is sealed to prevent loss of the reference liquid, and provides for communication between the sensor and a reference constituent present in the reference liquid. The chamber is provided with a gas-inleting port that is sealed by a first semi-permeable membrane. The first semi-permeable membrane is permeable to gaseous fluid constituents but impermeable to the reference liquid and to non-gaseous reference constituents present in the reference liquid. The chamber is further provided with a gas vent.
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