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| Brand | Bigdipper |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | HBD5-OPA4110TP |
| Measurement Principle | Optical Light Scattering (Nephelometric) |
| Range Options | 0.003–33 mg/m³ (100×), 0.03–330 mg/m³ (10×), 0.8–32,000 g/m³ (X), or 15×0.02–166 g/m³ (15×) |
| Accuracy | ±2% or ±0.8 g/m³ (water fog reference), whichever is greater |
| Calibration | Dual-point 2KS calibration |
| Response Time | ≤1 s |
| Operating Temperature | 0–70 °C |
| Power Supply | NiCd ×8 battery pack (1 h continuous operation) |
| Dimensions (Meter) | 98 × 150 × 30 mm |
| Sensor Dimensions | Ø24 × 360 mm |
| Weight | 0.7 kg |
| Display | 16×2 LCD with backlight |
| Data Logging | 24 records per calibration table (up to 8 tables) |
| Communication | RS-232 / RS-485 serial interface |
| Compliance | Designed for field-deployable environmental and industrial aerosol monitoring per ISO 7706 (airborne oil mist), ASTM D6340 (aerosol mass concentration), and EPA Method 9031 (nephelometric turbidity correlation) |
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