Platinum rhodium thermocouple
One. Product 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 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 often because of the need to vary, but they are roughly the same, the basic structure of the usually by hot electrode, insulation sleeve to protect the main components such as pipe and connection box.
2. Product application
Platinum rhodium thermocouple are suitable for all kinds of high temperature circumstance in the process of production, are widely used in powder metallurgy, bright sintering furnace, vacuum furnace, melting furnace, glass, ceramic and industrial salt bath furnaces and furnace temperature.
3. The main technical parameters
Electrical outlet: M20x1. 5, NPT1/2
The level of accuracy: I, II
Protection grade: IP65
Accidentally: wire diameter Φ 0.5
Nominal pressure: the atmospheric pressure
4. Measure temperature and tolerance
Thermocouple type | Code name | Degree, | The highest temperature | Measuring temperature | The allowable deviation delta t ℃ |
Platinum rhodium 30 - platinum rhodium 6 | WRR | B | 0 ~ 1800 | 0-1600. | Plus or minus 1.5 �� or plus or minus 0.25% t |
Platinum rhodium 10 - platinum | WRP | S | 0 ~ 1600 | 0-1300. | Plus or minus 1.5 �� or plus or minus 0.25% t |
Nickel chrome - nickel silicon | WRN | K | 0 ~ 1300 | 0-1100. | Plus or minus 2.5 ℃ or plus or minus 0.75% t |
Copper nickel chrome - nickel | WRE | E | 0 ~ 800 | 0-800. | Plus or minus 2.5 ℃ or plus or minus 0.75% t |
5. The type and specification
Type no. | Degree, | ℃ temperature range | Protecting tube material | Thermal response time | Gauge, | |
d | L x l | |||||
WRP-130 | S | 0-1300. | High aluminum | < 150S | Φ 16 | 300x150 |
WRP-131 | < 360S | Φ 25 | ||||
WRQ-130 | R | 0-1300. | < 150S | Φ 16 | ||
WRQ-131 | < 360S | Φ 25 | ||||
WRR-130 | B | 0-1600. | Corundum tube | < 150S | Φ 16 | |
WRR-131 | < 360S | Φ 25 |
1) thermocouple grade I order by the agreement;
2) the part to be carbon steel.
Series products are: single platinum-rhodium thermocouple;Double platinum rhodium thermocouple.Armoured platinum rhodium thermocouple.Resistance to high temperature platinum rhodium thermocouple.