The new oxygen probe offers excellent consistency and a rapid carbon burn recovery time. Under normal conditions, the oxygen probe has a lifespan of over 18 months. It is easy to install and maintain, with a stable signal. It is suitable for various processes including carburizing, carbonitriding, super carburizing, and nitriding in nitrogen-rich atmosphere. This is an oxygen probe that can be used under high temperatures and harsh conditions. The ceramic tube and zirconia head inside the metallic outer tube are fragile. Therefore, extreme care must be taken when removing the oxygen probe to avoid unnecessary damage. Marathon has designed special packaging to ensure the safe transport of the oxygen probe to the site of use. The packaging box consists of a sturdy cardboard box and two foam pads that support the oxygen probe; please keep it well. If you need to inspect or repair the oxygen probe, the original packaging is essential. As a subsidiary of Marathon in the United States, "Carbonking" is a new series of oxygen probes launched by Marathon. The product has been tested by users of heat treatment equipment in the United States. Regardless of whether in the United States or China, Marathon's oxygen probes of all series are manufactured in strict accordance with the requirements of the ISO9001 management system. The Marathon Zirconia oxygen probe is an industrial online gas oxygen analysis sensor based on the principle of a high-temperature solid electrolyte. It is widely used in combustion control (such as boilers, kilns), heat treatment, steel metallurgy, chemical industries, and more. Its core structure is an electrochemical battery of zirconia (ZrO₂) solid electrolyte. "What is done cannot be changed, but what is to be done can still be pursued."