High temperature measurement platinum rhodium thermocouple

1.Indicate the thermocouple model, graduation number, and operating temperature range.
2.The diameter, length (total length and insertion depth), and material (corundum ceramic or stainless steel) of the thermocouple protection tube.
3.The fixed method (fixed or movable thread, fixed or movable flange) requires corresponding dimensions to be provided.

4.Specializing in the production of various models and division numbers of thermocouples, thermistors, steel thermometers, temperature measuring instruments and related products.

Platinum rhodium high-temperature resistant thermocoupleThe shortcomings are thermoelectric potential, low thermoelectric potential, low sensitivity, decreased mechanical strength at high temperatures, high sensitivity to pollution, expensive precious metal materials, and therefore a large one-time investment.SType thermocouple, also known as single platinum rhodium thermocouple, has a division mark ofSDividing number, mainly used for measurement0~1600℃The temperature of the medium is a category of precious metal thermocouples. Normal use in high-temperature environments such as coking plants and steel mills.

【 Detailed Introduction 】

platinum-rhodium10-Platinum thermocouple（SType thermocouple is a precious metal thermocouple. Its positive electrode（SP）The nominal chemical composition is platinum rhodium alloy, which contains rhodium10%, containing platinum90%, negative pole（SN）For pure platinum, it is commonly known as a single platinum rhodium thermocouple. The long-term upper limit operating temperature of this thermocouple is1300℃The short-term upper limit usage temperature is1600℃.

SThe high-temperature resistant thermocouple has the advantages of high accuracy, good stability, wide temperature measurement range, and long service life in the thermocouple series. It has good physical and chemical properties, stable thermoelectric potential, and excellent oxidation resistance at high temperatures, making it suitable for both oxidizing and inert atmospheres. due toSThe high-temperature resistant thermocouple has excellent comprehensive performance and meets the requirements of the temperature scale for useSThe high-temperature resistant thermocouple has long been used as an internal instrument for temperature scales.

SThe shortcomings of thermocouples are thermoelectric potential, low thermoelectric potential, low sensitivity, decreased mechanical strength at high temperatures, high sensitivity to pollution, expensive precious metal materials, and therefore a large one-time investment.

platinum-rhodium30-platinum-rhodium6Thermocouple（BType thermocouple is a precious metal thermocouple. allowable deviation-0.015mm, its positive pole（BP）The nominal chemical composition is platinum rhodium alloy, Among them, rhodium is30%, containing platinum70%, negative pole（BN）Platinum rhodium alloy, with rhodium content6%Therefore, it is commonly known as a double platinum rhodium thermocouple. This thermocouple is designed for long-term useThe operating temperature is1600℃In the short termOperating temperaturefor1800℃.BType thermocouple has accuracy in the thermocouple seriesAdvantages include stability, wide temperature range for temperature measurement, long service life, and high upper limit for temperature measurement. Suitable for both oxidizing and inert atmospheres, and can also be used for short-term useSuitable for real air, but not for reducing atmospheres or atmospheres containing metal or non-metal vapors.BOne obvious advantage of a type thermocouple is that it does not require compensation wires for compensation, as0~50℃The thermoelectric potential within the range is less than3μV.BThe shortcomings of thermocouples are thermoelectric potential, low thermoelectric potential, low sensitivity, decreased mechanical strength at high temperatures, high sensitivity to pollution, expensive precious metal materials, and therefore a large one-time investment.

platinum-rhodium thermocoupleThe thermoelectric heating will increase as the temperature at the measuring end rises, and its size is only related to the thermocouple material and the temperature at both ends, independent of the length and diameter of the thermoelectric electrode. The appearance of various platinum rhodium thermocouples often varies due to needs, but their basic structures are roughly the same, usually composed of main components such as hot electrodes, protective tubes, and junction boxes.

Application of Platinum Rhodium Thermocouples

Suitable for high-temperature applications in various production processes, widely used for temperature measurement in powder metallurgy, sintering bright furnaces, vacuum furnaces, smelting furnaces, glass, steelmaking furnaces, ceramic and industrial salt bath furnaces, etc.

Platinum rhodium thermocouple for temperature measurement and tolerance

Platinum rhodium thermocouple model and specifications