A locating clip holds the knife-edge sensing end against the furnace wall or tube. Choose an unshielded or shielded blade, a K, E, J or T thermocouple and an insulated or grounded measuring junction. These probes have a 58mm blade and a user-specified total length. Lengths above 1.5m are supplied coiled.
| Element | Blade | Single-element model | Dual-element model | Sheath and operating range |
|---|---|---|---|---|
| K | Unshielded | WRNKT-01DR | WRNKT2-01DR | 12.7mm; 06Cr18Ni11Ti: 0-850°C; GH30 alloy: 0-1100°C |
| Shielded | WRNKT-02DR | WRNKT2-02DR | ||
| E | Unshielded | WRNET-01DR | WRNET2-01DR | 12.7mm; 06Cr18Ni11Ti: 0-800°C |
| Shielded | WRNET-02DR | WRNET2-02DR | ||
| J | Unshielded | WRNJT-01DR | WRNJT2-01DR | 12.7mm; 06Cr18Ni11Ti: 0-750°C |
| Shielded | WRNJT-02DR | WRNJT2-02DR | ||
| T | Unshielded | WRNTT-01DR | WRNTT2-01DR | 12.7mm; 06Cr18Ni11Ti: 0-350°C |
| Shielded | WRNTT-02DR | WRNTT2-02DR |
All listed models use a water-resistant connection head and offer Class I or Class II elements. Single-element entries are M20x1.5 for 10mm cable; dual-element entries are M24x1.5 for 16mm cable.
| Sensor type | Element | Class I interval | Class I tolerance | Class II interval | Class II tolerance |
|---|---|---|---|---|---|
| Nickel-chromium / nickel-silicon | K | -40-1000°C | ±1.5°C or ±0.4%|t| | -40-1200°C | ±2.5°C or ±0.75%|t| |
| Nickel-chromium / copper-nickel | E | -40-800°C | -40-900°C | ||
| Iron / copper-nickel | J | -40-750°C | -40-750°C | ||
| Copper / copper-nickel | T | -40-350°C | ±0.5°C or ±0.4%|t| | -40-350°C | ±1°C or ±0.75%|t| |
Apply the selected model's operating range and the chosen accuracy-class interval together. Within each tolerance expression, use the larger fixed or temperature-dependent value; t is the temperature in °C.
