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| Brand | Senbe |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Manufacturer |
| Country of Origin | China |
| Model | ST-85 |
| Instrument Type | Silicon Photocell-Based Illuminance Meter |
| Measurement Range | 0.1–199.9 × 10³ lx |
| Relative Indication Error | < ±4.0% |
| V(λ) Matching Error (f₁) | < 6.0% |
| Cosine Correction Error (f₂) | < 4.0% |
| Nonlinearity Error (f₃) | < ±1.0% |
| Range Switching Error (f₄) | < ±1.0% |
| Fatigue Error (f₅) | < −0.5% |
| Response Time | < 1 s |
| Operating Temperature | 0–40 °C |
| Operating Humidity | < 85% RH |
| Dimensions | 160 mm × 78 mm × 43 mm |
| Weight | 0.2 kg |
| Power Supply | 6F22 9 V alkaline battery (non-rechargeable) |
| Total Power Consumption | < 0.1 VA |
| Display | Backlit LCD |
| Range Selection | Manual/Automatic |
| Output Interface | USB digital output with redundant power capability |
| Additional Functions | Data hold, low-battery indicator, auto power-off delay, tactile key operation with audible beep feedback |
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