Testing for leakage currents in planar lambda probes

Details Testing for leakage currents in planar lambda probes Testing for leakage currents in planar lambda probes

1998-04-16

2000-07-04

Do, Diep N.

Electricity: measuring and testing

Using ionization effects

For analysis of gas, vapor, or particles of matter

324523, 204426, 73 232, G01R 3102, G01N 27416

Patent

active

060844140

ABSTRACT:
A method for testing for leakage currents in an oxygen probe, in particular a planar lambda probe, having at least one heating element, one external electrode and one internal electrode, and a solid electrolyte arranged between the electrodes, a first voltage being applied to the heating element. A second voltage is applied to at least one of the electrodes, the second voltage being selected so that the potential difference between the electrode and at least one area of the heating element is positive.

REFERENCES:
patent: 5291417 (1994-03-01), Schaibel et al.
patent: 5399961 (1995-03-01), Wild et al.
patent: 5439581 (1995-08-01), Schmah
patent: 5562811 (1996-10-01), Lenfers
patent: 5875768 (1999-03-01), Schenk et al.

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