This assembled construction uses a two-chamber aluminum flameproof connection head, with measuring elements accessible for replacement. The listed head marking is dIIBT4. Available elements are K and E thermocouples, Pt100 platinum RTDs and Cu50 copper RTDs.
| Sensor type | Element | Protective-tube material | Operating range | Tolerance |
|---|---|---|---|---|
| Nickel-chromium / nickel-silicon | K | 06Cr18Ni11Ti | -40-850°C |
Class I: ±max(1.5, 0.004×|t|)°C Class II: ±max(2.5, 0.0075×|t|)°C |
| 1Cr25Ni20 | 0-1000°C | |||
| GH30 alloy | 0-1100°C | |||
| 3YC-52 alloy | Single: 0-1200°C; dual: 0-1100°C | |||
| Nickel-chromium / copper-nickel | E | 06Cr18Ni11Ti | Single: -40-650°C; dual: -40-550°C | |
| Platinum RTD | Pt100 | 06Cr18Ni11Ti or 0Cr18Ni12Mo2Ti | -200-500°C |
Class A: ±(0.15+0.002×|t|)°C Class B: ±(0.30+0.005×|t|)°C |
| Copper RTD | Cu50 | -50-100°C | ±(0.30+0.006×|t|)°C |
In these formulas, t is the numerical value of temperature in °C, |t| is its absolute value, and max(a, b) means the larger value. All tolerances are temperature deviations in °C. Class I and II apply to thermocouples; Class A and B apply to Pt100 RTDs.
| Mounting code | Mounting form | Protective tube | Nominal pressure |
|---|---|---|---|
| 1 | No fixed mounting | Straight; 12mm or 16mm | Atmospheric pressure |
| 2 | Fixed thread | 10MPa | |
| 3 | Sliding flange | Atmospheric pressure | |
| 4 | Fixed flange | Determined by flange form |
The aluminum flameproof head is listed as connection-head code 4. Insertion choices are 100mm, 150mm, 200mm, 250mm, 300mm, 400mm, 500mm, 750mm and 1000mm. A 16mm protective tube on a thermocouple also permits 1500mm and 2000mm insertion.
