Method and arrangement for measuring the contamination of a capa

Details Method and arrangement for measuring the contamination of a capa Method and arrangement for measuring the contamination of a capa

1983-08-16

1986-12-02

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Conductor identification or location

Inaccessible

374 28, G01R 2726

Patent

active

046267743

ABSTRACT:
A dew-point measuring instrument has a capacitive dew-point sensor 1 which is cooled by a cooling device 17 to the dew-point temperature measured by a temperature sensor 8. A phase measuring circuit 14 measures the phase angle of the impedance of the capacitive dew-point sensor 1. The measured phase angle is used as a gauge for the contamination of the dew-point sensor 1.

REFERENCES:
patent: 2435895 (1948-02-01), McIlvaine
patent: 3664192 (1972-05-01), Campbell et al.
Whitehaus, Linearizing Relative Humidity Measurements, 9-1972, pp. 72-73.

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