Detector mounting in paramagnetic gas analyzers

Details Detector mounting in paramagnetic gas analyzers Detector mounting in paramagnetic gas analyzers

2006-10-12

2010-06-01

Fitzgerald, John (Department: 2856)

Measuring and testing

Gas analysis

By thermal property

Reexamination Certificate

active

07726176

ABSTRACT:
The invention relates to paramagnetic gas analyzer with a housing, comprising: an electromagnet with an air gap; power source for said electromagnet; a sample gas conduit and a reference gas conduit into said air gap; an exit conduit communicating with said air gap for removing the intermixed gases; pressure detecting microphones connected to said sample gas conduit and to said reference gas conduit for sensing the gas pressures; as well as electronics. The pressure detecting microphones comprise two independent microphonic membranes that are parallel to each other, their pressure surfaces being to the same direction, or to the opposite directions. The electrical outputs of the microphones provide signals that are proportional to gas pressures in the sample gas and reference gas conduits, and that are further processed in the electronics to eliminate effects of mechanical shocks or the like.

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