The introduction of platinum-rhodium thermocouple

Platinum-rhodium thermocouple is precious metals platinum rhodium wire as the core, it has strong stability, oxidation resistance, and can achieve high precision measurement, measurement accuracy, high temperature resistance and other advantages, including B platinum-rhodium thermocouple can use for a long time under the high temperature occasion 1600 degrees, the highest temperature can reach 1800 degrees, measuring s-shaped platinum-rhodium thermocouple can use for a long time working in the occasion of high temperature of 1300 degrees, the highest temperature of 1600 degrees, the difference of type B and S is the platinum rhodium wire thickness degrees, of course the cost is not the same, should be according to the actual production needs. Here give you a brief introduction of platinum-rhodium thermocouple.

platinum-rhodium thermocouple to measure fluid in all kinds of industrial production, the temperature of steam, gas and solid surface, is widely used in powder metallurgy, smelting furnace, vacuum furnace, furnace, industrial salt bath furnace, bright sintering furnace and other industrial production, often with temperature transmitter, controller and display instrument, such as process control system, to direct measurement or control of the temperature measurement in the process of production.

how it works:

platinum-rhodium thermocouple is composed of two different components of the conductor when two ends synthesis loop, when the two junction temperature is not at the same time, will produce thermal current in the circuit. If the work end of the thermocouple with the reference when there is a difference in temperature, display instrument will be installed by the thermocouple thermoelectric potential of the corresponding temperature value. Platinum-rhodium thermocouple electric hot will grows with the temperature measuring end, it is only with the size of the thermocouple temperature at the ends of the materials and relevant, has nothing to do with the hot electrode length and diameter. The appearance of various platinum-rhodium thermocouple is often due to the actual need and appearance is not the same, but they are roughly the same basic structure, usually by the hot electrode, insulation sleeve to protect the main components such as pipe and connection box. Advantages: platinum rhodium thermocouple in the thermocouple series has the highest accuracy, stability, best measure [area wide, long service life, high temperature limit, etc. Is suitable for the oxidation of gas, can also be short term used in vacuum, but does not apply to a reducing gas or containing metal or nonmetal steam situations.