Shuanghua S-type WRP platinum rhodium thermocouple

Shuanghua S-type WRP platinum rhodium thermocoupleIn the thermocouple series, it has the advantages of high accuracy, good stability, wide temperature measurement range, and long service life. Because platinum rhodium and platinum rhodium alloys are made of thermocouple wire, they are called platinum rhodium thermocouples, which are divided intoplatinum-rhodium10-Platinum thermocouple（SType thermocouple）Theplatinum-rhodium13-Platinum（RType thermocouple）Platinum rhodium30-platinum-rhodium6Thermocouple（BType thermocouple）.Suitable for high-temperature applications in various production processes, widely used for temperature measurement in industrial operations such as powder metallurgy, sintering bright furnaces, vacuum furnaces, smelting furnaces, glass, steelmaking furnaces, environmental power generation, thermal power plants, ceramic processing, and salt bath furnaces.

【 Detailed Introduction 】

WRP-SPlatinum rhodium thermocouple

platinum-rhodium10-Platinum thermocouple（SType thermocouple）For precious metal thermocouples. Its positive and（SP）The nominal chemical composition of the alloy is platinum rhodium alloy, with positive and rhodium containing elements10%, containing platinum90%, negative and（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℃.

SType thermocoupleIn the thermocouple series, it has the advantages of high accuracy, good stability, wide temperature measurement range, and long service life. 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 toSPlatinum rhodium thermocoupleHas excellent comprehensive performance and conforms to the international temperature scale for useSHigh temperature resistant thermocoupleFor a long time, it has been used as an interpolation instrument for international 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.

WRQ-RPlatinum rhodium thermocouple

platinum-rhodium13-platinumthermocouple（RType thermocouple）For precious metal thermocouples. The diameter of the filament is specified as0.5mm, allowable deviation-0.015mm, its correctness and（RP）The nominal chemical composition is platinum rhodium alloy, which contains rhodium13%, containing platinum87%, negative and（RN）For pure platinum, the long-term upper limit usage temperature is1300℃, the short-term upper limit usage temperature is1600℃。

RType thermocoupleIn the thermocouple series, it has the advantages of high accuracy, good stability, wide temperature measurement range, and long service life. 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 toRPlatinum rhodium thermocoupleThe comprehensive performance andSThermocouples of the same type have been difficult to promote in China, and are rarely used for temperature measurement in China, except for their application in imported equipment.1967Year to Year1971During the year, the United KingdomNPL, United StatesNBSAnd CanadaNRCThree major research institutions conducted a collaborative study, and the results showed that,RType thermocoupleStability and reproducibility ratioSThe thermocouples are all good, but research in this area has not yet been conducted in China.

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

WRR-BPlatinum rhodium thermocouple

platinum-rhodium30-platinum-rhodium6Thermocouple（BType thermocouple）For precious metal thermocouples. allowable deviation-0.015mm, its correctness and（BP）The nominal chemical composition is platinum rhodium alloy, which contains rhodium30%, containing platinum70%, negative and（BN）Platinum rhodium alloy, with rhodium content6%, therefore commonly known asDouble platinum rhodium thermocoupleThe upper limit temperature for long-term use of this thermocouple is1600℃, the upper limit temperature for short-term use is1800℃。BType thermocoupleIn the thermocouple series, it has the advantages of high accuracy, stability, wide temperature measurement range, long service life, and high temperature measurement upper limit. Suitable for oxidizing and inert atmospheres, and can also be used in vacuum for a short period of time, but not suitable for reducing atmospheres or atmospheres containing metal or non-metal vapors.BPlatinum rhodium thermocoupleOne obvious advantage is that there is no need to use compensating wires for compensation, because in0~50The thermoelectric potential within the temperature 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.

Shuanghua S-type WRP 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, and is independent of the length and diameter of the thermocouple. The appearance of various platinum rhodium thermocouples often varies due to needs, but their basic structures are roughly the same, usually consisting of thermoelectric, protective tubes, and junction boxes as the main components.

Application of Platinum Rhodium Thermocouples

Widely used for temperature measurement in industrial operations such as powder metallurgy, sintering bright furnaces, vacuum furnaces, smelting furnaces, glass, steelmaking furnaces, environmentally friendly power generation, thermal power plants, ceramic processing, and salt bath furnaces.Shuanghua S-type WRP platinum rhodium thermocoupleMeasure temperature and tolerance

Platinum rhodium thermocouple model and specifications

1.Indicate the thermocouple model or scale number, and the temperature range for use.
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.Our company produces measurement related products such as thermocouples, thermistors, steel thermometers, temperature measuring instruments, compensation wires, etc. of various models and division numbers.