Calibration cell for calibration of gaseous or non-gaseous fluid

Details Calibration cell for calibration of gaseous or non-gaseous fluid Calibration cell for calibration of gaseous or non-gaseous fluid

1986-08-08

1987-10-20

Levy, Stewart J.

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

7386483, G01C 2500

Patent

active

047005602

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.

REFERENCES:
patent: 1014842 (1912-01-01), Muckenfuss
patent: 3521865 (1970-07-01), Kertzman
patent: 3533272 (1970-10-01), Dahms
patent: 3631654 (1972-01-01), Riely et al.
patent: 3698238 (1972-10-01), Wall et al.
patent: 3718568 (1973-02-01), Neuwelt
patent: 3885414 (1975-05-01), Reville
patent: 3973913 (1976-08-01), Louderback
patent: 4003707 (1977-01-01), Lubbers et al.
patent: 4109505 (1978-08-01), Clark et al.
patent: 4221567 (1980-09-01), Clark et al.
patent: 4635467 (1987-01-01), Hoffa et al.

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