Method for the direct presentation of a differential measured qu

Details Method for the direct presentation of a differential measured qu Method for the direct presentation of a differential measured qu

1990-03-19

1991-11-19

Noland, Tom

Measuring and testing

Gas analysis

With compensation detail

73 2321, 422 83, 340632, 340634, G01N 700

Patent

active

050656139

ABSTRACT:
A method for the direct presentation of a differential measured quantity, in particular, a differential gas concentration measurement, in terms of its correct physical unit is disclosed. A characteristic curve representing the output of a gas sensor detector as a function of gas concentration is obtained in an absolute coordinate system. A reference level at which the differential measurement is to occur is defined on this characteristic curve by a defined input or, respectively, output value. This reference level defines the origin of a differential coordinate system from which the differential measurement may be directly ascertained.

REFERENCES:
patent: 4101221 (1978-07-01), Schunck et al.
patent: 4351181 (1982-09-01), Currans
patent: 4488811 (1984-12-01), Fukuma
patent: 4526028 (1985-07-01), Hubner
patent: 4578762 (1986-03-01), Wong
patent: 4709575 (1987-12-01), Myers

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