Lambda sensor OZA685-WW1
Replacement for Bosch LSM 11
Interested? More information at
Article no. 118.02-7100
Lambda sensor NGK OZA685-WW1 (formerly NGK) for the biomass industry
A high level of efficiency is one of the key requirements of a modern biomass heating system. Lambda probe technology was developed in the 1970s and has been used as standard equipment in the automotive industry since 1976. In automotive applications, the lambda probe regulates the fuel-air ratio to ensure optimal combustion and high efficiency.
This principle of measuring residual oxygen in the exhaust gas is also applied to the combustion of biomass (logs, wood chips, pellets). Control by means of a lambda probe enables continuous adjustment of the combustion process to varying operating conditions and represents the current state of the art in modern biomass heating systems.
The lambda sensor is a high-quality alternative to Bosch LSM 11.
Here you will find the right connection cable:
May you need a transmitter?
Construction of zirconia lambda sensor
zirconia element
The zircon element is a solid electrolyte. The heart of this lambda sensor is a finger-shaped ceramic that is hollow on the inside. In order to reach the desired operating temperature, a heater integrated 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.
Protection tube
The metal protective tube protects the probe element from solid objects 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
The ceramic holder holds the probe element and protects it from vibration.
Sealing ring
The sealing ring ensures a tight fit between the lambda probe and the threaded sleeve.
Hex
The lambda probe is screwed in with the hexagon. The correct tightening torque should be observed here.
Seal
To prevent moisture from penetrating the sensor, the cables are routed to the outside through a rubber seal. This seal is pressed over the sensor housing.
Heater connection
The heater of the lambda probe is supplied with power via these two white connections.
SensorMass
This gray line establishes the ground connection with the electronics.
Sensor Signal
The signal is routed to the electronics via this black wire.
Output line
FAQ: Lambda sensor
Yes. The sensor is a drop-in replacement and can be used as a high-quality alternative directly in place of Bosch LSM 11.
The OZA685-WW1 lambda sensor is suitable for biomass heating systems in which the Bosch LSM 11 was previously installed. It is ideal for existing systems where simple replacement without modifications is required.
Yes. The sensor is a drop-in replacement and can be used directly in place of the Bosch LSM 11 as a high-quality alternative.
We are the European distributor for Niterra lambda sensors (formerly NGK | NTK).
