Armored Thermocouple
Armored thermocouple can be bended, and has advantages such as high pressure resistance, fast thermal response, and great durability. The same as industrial thermocouple assemblies, it is also used in combination with display units, recorders and electronic regulators to achieve temperature measurement and control purposes. It can also be used as the sensing element of industrial thermocouple assemblies.
As a commonly used temperature sensor, the armored thermocouple supports direct measurement of the surface temperature of liquids, steam, gases and solids, within temperature range of 0℃~800℃.
Our line of armored thermocouple is available in five structure designs to support direct installation, fixed thermowell installation, movable thermowell installation, fixed flange mounting, and movable flange mounting. The fixed thermowell is disposable during installation, while the movable thermowell can be repeatedly used.
Temperature Range| Conductor combination | Code | Type | Outer diameter of thermowell (mm) | Common working temperature ( ℃ ) | Max. working temperature ( ℃ ) | Allowable variation | |
| Measuring range ( ℃ ) | Tolerance | ||||||
| Platinum 10% rhodium / Platinum | WRPK | S | ≥Φ3 | 1100 | 1200 | 0-1200 | ±1.5 ℃ or ±1.5%t |
| Nickel-chromium / Copper Nickel | WREK | E | ≥Φ3 | 600 | 700 | 0-700 | ±2.5 ℃ or ±0.75%t |
| Nickel-chromium / Nisil | WRNK | K | ≥Φ3 | 800 | 950 | 0-900 | ±2.5 ℃ or ±0.75%t |
| Copper / Copper Nickel | WRCK | T | ≥Φ3 | 350 | 400 | ＜ -200 | Not stipulated |
| -40-350 | ±0.75%t | ||||||
| Ferrum / Copper Nickel | WRFK | J | ≥Φ3 | 500 | 600 | 0-600 | ±2.5 ℃ or ±0.75%t |
Response time of armored thermocouple shall not higher than the value shown in the following table
| Response time τ0.5S | Thermowell contacting type | Insulated type |
| Thermowell 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 |
