Oil quality sensor system, method and apparatus

An oil quality sensing system, comprising:

• an oil filter;
• a conductivity sensor attached to the oil filter, said conductivity sensor comprising a plurality of spaced apart electrode pairs mounted on a nonconductive film substrate, configured as a substantially circular array of said electrode pairs extending in an annular band around the underside of a tapping plate of said oil filter;
• a waveform generator;
• a measuring device for measuring a signal reflected by the sensor,
• a comparing device, and
• a signal generator.

An oil quality sensing system, comprising:

• an oil filter;
• a conductivity sensor attached to the oil filter, said conductivity sensor comprising a plurality of spaced apart electrode pairs mounted on a nonconductive film substrate;
• a waveform generator;
• a measuring device for measuring a signal reflected by the sensor,
• a comparing device,
• a signal generator;
• and
• a flexible electrical cable, electrically connected to said sensor and extending away from the oil filter, and a disconnectable plug attached to the cable.

A sensor for immersing placement in oil to monitor the condition thereof, said sensor comprising:

• a nonconductive film of a polymeric substrate;
• and
• plurality of spaced apart electrode pairs applied to a first surface of the substrate;
• and
• a pressure-sensitive adhesive applied to a second surface of the substrate opposite the first surface.

A sensor for immersing placement in oil to monitor the condition thereof, said sensor comprising:

• a nonconductive film of a polymeric substrate;
• a plurality of spaced apart electrode pairs applied to a first surface of the substrate;
• a first electrode connector strip extending laterally on the substrate;
• a plurality of spaced apart electrodes extending from said first connector strip and in electrical communication therewith;
• a second electrode connector strip extends laterally on the substrate, spaced from the second connector strip;
• and
• a plurality of spaced apart electrodes extending from said second connector strip and in electrical communication therewith.