WR口K series armoured thermocouple
Armored thermocouples have many advantages such as flexibility, high voltage resistance, fast thermal response time, and ruggedness.
Description
SELECTION CRITERIA
INSTALLATION AND USE
FIELD INSTALLATION
Armored thermocouples have many advantages such as bending, high pressure resistance, fast thermal response time, and durability.It is the same as industrial assembled thermocouples.As a sensor for measuring temperature, it is usually used together with display instruments, recording instruments and electronic regulators. At the same time, it can also be used as a temperature sensing element for assembled thermocouples. It can directly measure the temperature of liquid, steam and gas medium and solid surface in the range of 0 ℃ -800 ℃ in various production processes. (C25N20, GH3030, GH30393YC-52 can also be provided as the outer protective tube material, the temperature range can be up to 0-1200 ℃
| category | Code | Index number | Outer diameter of casing mm | Common temperature ℃ | Maximum operating temperature ℃ | Allowable deviation △ t | |
| Measurement range ℃ | Tolerance value | ||||||
| Platinum rhodium 10-platinum | WRPK | S | ≥ø3 | 1100 | 1200 | 0-1200 | ±1.5℃or±025%t |
| NiCr-CuNi | WREK | E | ≥ø3 | 600 | 700 | 0-700 | ±2.5℃±075% t |
| NiCr-NiSi | WRNK | K | ≥ø3 | 800 | 900 | 0-9000 | ±2.5℃±075% t |
| Copper-copper nickel | WRCK | T | ≥ø3 | 350 | 400 | 200 | Stated |
| -40~±350 | ±075% | ||||||
| Iron-copper nickel | WRFK | J | ≥ø3 | 500 | 600 | 0-6000 | ±2.5℃±075% t |
2 T mark products should be ordered in consultation with our company,
◆ Thermal response time
When the temperature changes stepwise, the time required for the output of the thermocouple to change to 50% of the step change is called the thermal response time as T0.5.
The thermal response time of the installed thermocouple is not greater than the following table
| Thermal response time T0.5s | Shell type | Insulated |
| 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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