Platinum-rhodium thermocouple
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1: overview - WR series industrial platinum rhodium thermocouple, thermocouple and precious metals a…
Description
1: overview - WR series industrial platinum rhodium thermocouple, thermocouple and precious metals 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. Platinum-rhodium thermocouple is connected by two different components of the conductor at both ends of the synthetic circuit, when the two junction temperature is not the same, will produce a thermal current in the circuit. If there is a temperature difference between the working end of the thermocouple and the reference end, the display instrument will indicate the corresponding temperature value of the thermoelectric potential generated by the thermocouple. The thermoelectric heat of the platinum-rhodium thermocouple will increase with the temperature of the measuring end. Its size is only related to the thermocouple material and the temperature at both ends, and has nothing to do with the length and diameter of the hot electrode. The shapes of platinum-rhodium thermocouples are often very different depending on the needs, but their basic structure is generally the same, usually composed of the main components such as hot electrode, insulating sleeve protection tube and junction box. 2: platinum-rhodium thermocouple is suitable for various high temperature occasions in the production process, widely used in powder metallurgy, sintering bright furnace, vacuum furnace, smelting furnace, glass, steel furnace and ceramics and industrial salt bath furnace temperature measurement. 3: the main technical parameters of electrical exports: M20x1. 5, NPT1/2 level of accuracy: I, II protection grade: IP65 accidentally wire diameter: Φ 0.5 nominal pressure: the atmospheric pressure 4: measuring temperature and tolerance
Thermocouple category | Code name | Degree, | * * * high temperature | Measuring temperature | Allowable deviation delta t℃ |
Platinum-rhodium 30- platinum-rhodium 6 | WRR | B | 0 ~ 1800 | 0-1600. | Plus or minus 1.5 ℃ or 0.25 mm t |
Platinum rhodium 10 - platinum | WRP | s. | 0 ~ 1600 | 0-1300. | Plus or minus 1.5 ℃ or 0.25 mm t |
Nickel-chromium - nickel-silicon | WRN | K. | 0 ~ 1300 | 0-1100. | Plus or minus 2.5 ℃ or 0.75 mm t |
Nickel-chromium - copper-nickel | WRE | E | 0 ~ 800 | 0-800. | Plus or minus 2.5 ℃ or 0.75 mm t |
5: model and specification
Type no. | Degree, | The temperature range is ℃ | Protective tube material | Thermal response time | Gauge, | |
L x L | ||||||
WRP2 WRP - 130-130 | s. | 0-1300. | High aluminum | < 150 s | Φ 16 | 300x150 |
WRP2 WRP - 131-131 | < 360 s | Φ 25 | ||||
WRQ2 WRQ - 130-130 | R | 0-1300. | < 150 s | Φ 16 | ||
WRQ2 WRQ - 131-131 | < 360 s | Φ 25 | ||||
WRR2 WRR - 130-130 | B | 0-1600. | Corundum tube | < 150 s | Φ 16 | |
WRR2 WRR - 131-131 | < 360 s | Φ 25 | ||||
(1) ordering of thermocouple class I according to the agreement;
(2) the non-inserted part is carbon steel.
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