Platinum  Noble metal Thermocouples
Special thermocouple is made of noble metal, ( platium in high purity as cathode, Platium and Rhodium alloy as positive pole), corundum as external tube, which is used to measure as high as 1800 like powder metallurgy, fritting furnace, vacuum furnace, matallurgy furnace and calcination of fire-proof materials, proclein, ceramics.

Type S thermocouple
Type S thermocouple is the PtRh10-PT thermocouple, it also used as a temperature transmitter, in general, type S thermocouple is connected with the display instrument, record instrument and computer by SC compensation cable. It can be directly measured temperature of the gas, liquid, melting liquid and solid surface in various production process. Now the type S thermocouple have three forms: Assembly thermocouple, sheathed thermocouple, assembly and sheathed combined thermocouple.

Type B thermocouple
B-type thermocouple in the series, with the highest accuracy and stability of the best, wide-temperature-zone, long life, high temperature limit. Applicable to oxidation and inert atmosphere can also be used for short-term vacuum, but does not apply to restore an atmosphere of or containing metal or non-metallic vapor in the atmosphere. B-type thermocouple is a clear advantage is not required for the purposes of compensation lead to compensate, as in 0 ~ 50 ° C within the framework of thermal power less than3μ V.

Application
It is widely used in high temperature production process such as glass, ceramic industry and industrial NaCl bathing stove, etc.

Features
1. It has a variety of advantages, such as: Easy assembly and convenient for replacement, high mechanical strenghth, good pressure-resistant., good shock-proof permance;
2. It is usually connected with displaymeter, recording meter and computer, etc;
3. To directly measure temperature of liquid, vapor, gas, and solid surface ranging from 0 to 1300 during various production processes;
4. Besides, it is widely measuring range.