Automatic calibration apparatus for a partial gas pressure measu

Details Automatic calibration apparatus for a partial gas pressure measu Automatic calibration apparatus for a partial gas pressure measu

1987-12-02

1989-08-08

Levy, Stewart J.

Measuring and testing

Instrument proving or calibrating

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

G01N 2700

Patent

active

048541532

ABSTRACT:
An automatic calibration apparatus for a partial gas pressure measuring sensor supplies a gas having a high partial pressure (referred to as the high gas) and a gas having a low partial pressure (referred to as the low gas), to a gas selection device (103) from a gas supplier (101) through a detector device (102) which detects an abnormal gas supply condition outside given, satisfactory gas supply conditions. The selection device (103) selects the high gas or the low gas for supplying the selected gas to a sensor support (27 or 104). A partial gas pressure measuring sensor to be calibrated is placed on the sensor support and an automatic calibration controller (106) stores an output of the partial gas pressure measuring sensor (105) in an information storing memory. When the detector device, detects an abnormal gas supply of the high gas or the low gas, the automatic calibration controller stops the storing of the output of the partial gas pressure measuring sensor (105) in the storing means (107).

REFERENCES:
patent: 3359784 (1967-12-01), Jorre et al.
patent: 4100537 (1978-07-01), Carlson
patent: 4322964 (1982-04-01), Melgaard et al.
patent: 4481804 (1984-11-01), Eberhard et al.
patent: 4555930 (1985-12-01), Leach et al.
patent: 4578986 (1986-04-01), Navarre
patent: 4663958 (1987-05-01), Matthiessen
patent: 4676100 (1987-06-01), Eichberger

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