S type thermocouple has the advantages of high accuracy, best stability, temperature measurement to wide, long service life, physical and chemical properties, thermoelectric potential stability and good oxidation resistance at high temperature, suitable for oxidation and inert gas. Temperature sensor specifications: 1. The temperature range of use: K (- 50 ~ 1300 ° C), S (50 ~ 1700 ° C), T (200 ~ 350 ° C),E (0 ~ 800 ° C), J (0 ~ 1000 ° C), B (300 ~ 1800 ° C), N (0 ~ 1300 ° C) PT100: -200 to 500℃ for Class A, -200 to 600℃ for Class B Cu50 ( -50 ~ 150℃ ) , Cu100 ( -50 ~ 150℃ ) 2. Use the 2/3-wire interface 3. Accuracy from Class I, Class II Features: 1. High precision and good stability; 2. High sensitivity and good linearity; 3. Short response time and good compatibility; 4. Compact structure, easy installation, good waterproof performance