S type thermocouple single platinum rhodium platinum rhodium - 10 Platinum to platinum rhodium 10 silk as the anode, pure platinum wire as cathode, index number is s. Its measuring range is - 20 ~ 1300 ℃, under the good environment can be short-term measure 1600 ℃; Suitable for use in oxidizing or neutral medium, high temperature resistant, unfavorable oxidation; Has good chemical stability; A higher measuring accuracy and can be used for precision temperature measurement and the benchmark thermocouple.