Lambda sensor OZA685-WW1

Lambdasonde OZA685-WW1 Niterra (NGK)

Biomass sensor

The zirconium element is a so-called solid-state electrolyte.
The core of this probe is a hollow, finger-shaped ceramic.
To reach the desired operating temperature, a heater inserted into the element is switched on. Depending on the residual oxygen content in the exhaust gas, a high or low electrical voltage is generated in a complex process.

Protective tube
The metal protective tube protects the probe element from solids and dust in the exhaust gas.

Heater
An integrated heater ensures that the probe element reaches the required operating temperature very quickly and a constant mV signal is given after just a few minutes.

Ceramic holder

Sealing ring

Hexagon
The probe is screwed in using the hexagon. Pay attention to the appropriate tightening torque.

Seal
To prevent moisture from entering the sensor, the cables are routed to the outside through a rubber seal. This rubber seal is pressed over the sensor housing.

Heater connection

Probe ground
This grey cable provides the ground connection to the electronics.

Probe signal
The probe signal is transmitted to the electronics via this black cable.