Technique for in situ calibration of a gas detector

Details Technique for in situ calibration of a gas detector Technique for in situ calibration of a gas detector

1979-08-31

1981-07-21

Swisher, S. Clement

Measuring and testing

Instrument proving or calibrating

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

G01M 1900

Patent

active

042791421

ABSTRACT:
In a gas measuring probe assembly having a gas sensing device located within a tubular housing positioned within a gas environment to be monitored, a tubular calibration gas flow pattern is established within the tubular housing substantially parallel to the walls of the tubular housing to sweep the monitored gas environment from the tubular housing and expose the gas sensing device to a calibration gas mixture substantially free of the monitored gas environment. This technique permits the in situ calibration of gas detectors, and is especially useful in calibrating stack gas monitoring probes.

REFERENCES:
patent: 3729979 (1973-05-01), Wiberg

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