Platinum-rhodium wire is a platinum - based binary alloy containing rhodium. Rhodium can improve the thermoelectric potential, oxidation resistance and acid corrosion resistance of the alloy against platinum. There are PtRh5, PtRhl0, PtRhl3, PtRh30 and PtRh40 and other alloys. Alloys over 20%Rh are insoluble in aqueous wang. Mainly used as thermocouple materials, including PtRhl0/Pt, PtRh13/Pt, etc., it is used as thermocouple wire in thermocouple to directly measure or control the temperature of fluid, steam and gas medium and solid surface in various production processes within the range of 0-1800℃.
Advantages: platinum-rhodium wire in thermocouple series has the highest accuracy, the best stability, wide temperature measurement zone, long service life, high temperature measurement upper limit advantages. Suitable for oxidizing and inert atmospheres, but not for reducing atmospheres or vapors containing metal or nonmetal.
Industrial thermocouple of platinum rhodium wire type B, S type, R type, platinum rhodium thermocouple is also called high temperature thermocouple, precious metals platinum rhodium have single platinum rhodium (10 - platinum rhodium platinum rhodium) and double platinum rhodium (30 - platinum rhodium platinum rhodium 6), as temperature measurement sensor, usually with temperature transmitter, controller and display instrument, such as process control system, to directly measure or control in the production of all kinds of fluid over a range of 0-1800 ℃, steam and gas medium and solid surface temperature.
The industries used are: iron and steel, power generation, petroleum, chemical, glass fiber, food, glass, pharmaceutical, ceramics, non-ferrous metals, heat treatment, aerospace, powder metallurgy, carbon, coking, printing and dyeing and almost all other industrial fields.
