Armored thermocouple
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Series armoured thermocouple has to bend, heat resistance to high pressure, fast response time and t…
Description
Series armoured thermocouple has to bend, heat resistance to high pressure, fast response time and the advantages of strong and durable, armoured thermocouple, thermocouple and fabricated as measure temperature sensor, usually armoured thermocouple and display instrument, recorder and electronic regulator, at the same time, the armored thermocouple also can be used as a prefabricated thermocouple temperature sensing element. The armored thermocouple can directly measure the temperature of liquid, steam and gas media and solid surface in various production processes ranging from 0℃ to 1100℃.
Main technical indicators temperature measurement range and accuracy
category | Code name | Degree, | Casing outside diameter mm | Common temperature ℃ | Service temperature ℃ | Allowable deviation | |
Measuring range ℃ | Tolerance values | ||||||
Platinum rhodium 10 - platinum | WRPK | s. | Φ 3 or higher | 1100 | 1200 | 0-1200. | Plus or minus 1.5 ℃ or 1.5 mm t |
Nickel-chromium - copper-nickel | WREK | E | Φ 3 or higher | 600 | 700 | 0-700. | Plus or minus 2.5 ℃ or 0.75 mm t |
Nickel-chromium - nickel-silicon | WRNK | K. | Φ 3 or higher | 800 | 950 | 0-900. | Plus or minus 2.5 ℃ or 0.75 mm t |
Copper and copper and nickel | WRCK | T | Φ 3 or higher | 350 | 400 | Less than 200 | If there are no relevant provisions |
- 40-350 | Plus or minus 0.75 t | ||||||
Iron - copper and nickel | WRFK | J | Φ 3 or higher | 500 | 600 | 0-600. | Plus or minus 2.5 ℃ or 0.75 mm t |
Note: "t" is the measured temperature. T - type indexing products need to negotiate orders with the factory.
Low armored thermocouple thermal response time step change in temperature, thermocouple output changes to correspond to the step change of the time required to 50 called thermal response time, use tau 0.5 said. The thermal response time of armored thermocouple shall not be greater than the following table:
Tau thermal response time of 0.5 S | Pick up shell | Insulation type |
Casing diameter (mm) | ||
2.0 | 0.4 | 0.5 |
3.0 | 0.6 | 1.2 |
4.0 | 0.8 | 2.5 |
5.0 | 1.2 | 4.0 |
6.0 | 2.0 | 6.0 |
8.0 | 4.0 | 8.0 |
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