Detailed information on the German MESA sampling oxygen probe (Lambda probe):

The use of Lambda probes in heat treatment processes is by MESA, a German company*.

MESA in Germany is the only company in the world and currently the only one that possesses this technology (using Lambda signals to accurately calculate carbon potential and dew point values).

As early as 1992, MESA successfully used Lambda probes as oxygen measuring probes in the field of heat treatment. In 1993, MESA once again used Lambda probes and dew point controllers for endothermic gas generators, bringing revolutionary changes in cost, accuracy, and lifespan in the necessary process links of heat treatment, and gaining recognition from customers. At present, in major industrial furnaces and heat treatment industries such as automotive parts manufacturing in Europe, conventional oxygen probes have been basically replaced, and lambda probes are widely used.

German MESA sampling oxygen probe (Lambda probe)Compared to conventional zirconia probes, there are several significant advantages:

1. Long service life.The German MESA sampling oxygen probe (Lambda probe) adopts a design of sampling tube and measuring chamber, which reduces many adverse factors on zirconia ceramics and greatly improves the service life of the probe. The service life of Lambda probes is generally 2-3 times longer than that of conventional zirconia probes of the same grade, with the longest service life reaching5-7 yearsHowever, the service life of conventional zirconia probes generally ranges from 2-3 months to 1 year, so if calculated on average based on the service life, the actual investment of users is much lower than the cost of conventional oxygen probes.

2. Small installation restrictions,Due to the design of the sampling tube, the zirconia ceramic of the probe is basically not affected by the furnace atmosphere, so the installation of the Lambda probe is much less restricted than that of the conventional oxygen probe. In addition, the Lambda probe is very durable and fully suitable for operating environments with significant temperature changes or mechanical shocks. Moreover, the Lambda probe can be used for1600°CThe above high-temperature heat treatment process will not result in signal deviation

3. The cost-effectiveness is very high,The maintenance cost in the later stage is much lower than that of conventional oxygen probes. After the conventional oxygen probe has inaccurate measurements, it must be replaced as a whole, while the sampling oxygen probe, even after several years of use, only needs to replace the Lambda probe on top, with a price of onlyThousands of yuan.

4. Easy to replaceBecause the working part of the Lambda probe is in the measurement room, when the Lambda probe needs to be replaced, it only needs to be rotated out of the measurement room and replaced with a new probe, without worrying about the impact of furnace temperature and thermal shock on the new probe during probe replacement, which will not affect normal production at all.

5. High measurement accuracy,Every Lambda probe produced by MESA company undergoes a four week baking process before leaving the factory to achieve a very stable ceramic state, and undergoes initial calibration to provide corresponding K1 and K2 coefficients, ensuring the accuracy of users' measurements and calculations.

6. Rich in functions,The Lambda probe can output analog signals such as 0 (4) -20mA through the heating power controller. The equipped intelligent heating power supply can even directly calculate oxygen content, dew point value, and so on, without the need to connect complex computing devices, greatly expanding the product's applicability.

At present, it has been successfully applied to its carbon control by well-known domestic users such as FAW Volkswagen, Schaeffler, Baotai Group, Aixie Lin, and Nangao Gear.