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The SSI Oxygen Probe is a high-precision oxygen concentration sensor, widely used in industrial process control and laboratory applications, particularly in industries such as heat treatment, metallurgy, chemical engineering, and automotive manufacturing. Its core principle is based on the properties of zirconia solid dielectric batteries, determining oxygen concentration by measuring the differential oxygen partial pressure on both sides at high temperatures. The probe features a heat-resistant nickel-chromium alloy body and a metal-ceramic coating, offering excellent corrosion and thermal shock resistance.