Machine oil deterioration detection

Details Machine oil deterioration detection Machine oil deterioration detection

1985-08-01

1987-06-23

Rowland, James L.

Communications: electrical

Condition responsive indicating system

Specific condition

324 65P, 340 59, 340603, 340604, 340620, G08B 2100

Patent

active

046756620

ABSTRACT:
A machine oil deterioration detection apparatus having a copper thin film resistor formed on an electrically insulating holding member and immersed in a machine oil. The copper thin film resistor is corroded by acid produced in accordance with deterioration of the machine oil, thus changing the resistance of the resistor. The change in resistance is detected by a detection circuit, connected to the thin film resistor, for detecting the resistance of the thin film resistor.

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