Penetration sensor

Details Penetration sensor Penetration sensor

1988-11-29

1990-09-04

Orsino, Joseph A.

Communications: electrical

Condition responsive indicating system

Specific condition

340565, 340566, 310332, G08B 1300

Patent

active

049548115

ABSTRACT:
A penetration sensor is disclosed which contains first and second transducers sandwiched around a layer which capacitively isolates the individual transducers. This sensing arrangement allows for the operational state of the sensor to be tested by applying an interrogation signal to each of the transducers.

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