Electrically detected impedance detector for the measurement of

Details Electrically detected impedance detector for the measurement of Electrically detected impedance detector for the measurement of

1994-09-27

1997-05-20

Williams, Hezron E.

Measuring and testing

Gas analysis

Moisture content or vapor pressure

73 2901, 338 35, H01G 700, H01G 501, G01K 704, G01D 2102

Patent

active

056314183

ABSTRACT:
Electrical impedance detector for measurement of physical quantifies, in particular of temperature or humidity. The detector comprises conductor electrodes (10a, 10b; 10A,10W), between which the electrical impedance (C.sub.M) that represents the physical quantity to be measured is measured. Between the conductor electrodes (10a, 10b;10A, 10W) there is an active material (11;11P) whose impedance properties are a function of the physical quantity to be measured. The detector is composed of pieces cut-off out of a continuous detector filament (20; 20H;20K), which detector filament (20;20H;20K) comprises a conductive electrode wire or an assembly of electrode wires (10a, 10b; 10A, 10W), on/between which there is an active material (11;11P) whose impedance properties are a function of the physical quantity to be measured. Further, a novel process is described for the manufacture of said detectors.

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