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

G - Physics

01

F

73/0.5, 324/25.5

G01F 25/00 (2006.01) G01N 27/417 (2006.01) G01N 33/00 (2006.01)

Patent

CA 1079085

TECHNIQUE FOR IN SITU CALIBRATION OF A GAS DETECTOR ABSTRACT OF THE DISCLOSURE 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.

259095

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