Electromagnetic chip detector

An electromagnetic chip detector for detecting a metallic chip in lubricating fluid of an engine, the electromagnetic chip detector comprising:

• a first electrically conductive terminal;
• a second electrically conductive terminal spaced apart from the first electrically conductive terminal to define a chip-receiving gap therebetween;
• a magnetizing circuit including:
• a first coil inductively coupled to the first electrically conductive terminal to generate a first generated magnetic field of a first polarity;
• and
• a second coil inductively coupled to the second electrically conductive terminal to generate a second generated magnetic field of a second polarity opposite the first polarity, the first coil and the second coil being electrically connected in series between a first node and a second node;
• a chip detection circuit in parallel with the magnetizing circuit, the chip detection circuit including:
• the first electrically conductive terminal electrically connected to the first node;
• the second electrically conductive terminal electrically connected to the second node;
• and
• the chip-receiving gap defined between the first electrically conductive terminal and the second electrically conductive terminal.