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O2 sensor design - GF07.04-P-4103-03M

Oxygen planar sensor 

Fig 1: Identifying Design Of Oxygen Sensor
G07537570Courtesy of MERCEDES-BENZ USA

Voltage-free insulated O2 sensors are used.

The active sensor ceramic consists of a gas-permeable ceramic body manufactured from zirconium dioxide. A protective tube with several slots protects the ceramic body from mechanical stresses and from temperature jumps.

They are connected electrically by means of a 4-pin connector.

Advantages of planar sensor compared to finger sensor: