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| Brand | Apogee |
|---|---|
| Origin | USA |
| Model Variants | SI-111, SI-121, SI-131, SI-1H1, SI-411 |
| Output Type | Analog Voltage (SI-1xx) / SDI-12 Digital (SI-4xx) |
| Field of View | 22.5° (SI-111/SI-411), 5° (SI-121/SI-421), 1° (SI-131/SI-431), 180° horizontal (SI-1H1/SI-4H1) |
| Spectral Range | 8–14 µm |
| Measurement Range | –60 °C to +110 °C |
| Calibration Uncertainty | ±0.2 °C (–20 °C to +65 °C), ±0.5 °C (–40 °C to +80 °C) |
| Response Time (95%) | 0.6 s |
| Sensitivity | 60 µV/°C |
| Operating Environment | –55 °C to +80 °C, 0–100% RH (non-condensing) |
| IP Rating | IP68 connector |
| Cable | 5 m, 4-conductor shielded twisted-pair, TPR jacket |
| Mass | 190 g (incl. cable) |
| Warranty | 4 years |
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