Method of and apparatus for automated sensor diagnosis through q

Details Method of and apparatus for automated sensor diagnosis through q Method of and apparatus for automated sensor diagnosis through q

1992-05-27

1996-03-12

Peng, John K.

Communications: electrical

Continuously variable indicating

With particular transmitter

34087004, 340517, 73 1R, 324691, 36455101, B08C 910

Patent

active

054990238

ABSTRACT:
A method of and apparatus for automated sensor validation diagnosis during and before operation of pluralities of sensors connected by multiplex sequence in a loop with analog-to-digital converter voltage measurement apparatus responsive to the sensor signals for the primary task of validating a process under monitor by the sensors, wherein provision is made for periodically or selectively quantitatively measuring either (or both) sensor-to-earth conductance or loop resistance of the sensors to insure sensor viability.

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patent: 4146750 (1979-03-01), Spiesman
patent: 4529970 (1985-07-01), Wynne
patent: 4549168 (1985-10-01), Sieradzki
patent: 4567471 (1986-01-01), Acar
patent: 4675896 (1987-06-01), Young
patent: 4751654 (1988-06-01), Lyyra
patent: 4885573 (1989-12-01), Fry et al.
Kaye Digi 4 Process Management Solutions (Product Data Sheet(#500).

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