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| Key | Origin: Imported |
|---|---|
| Manufacturer Type | Distributor |
| Model | LD-3C |
| Measurement Principle | Light Scattering (Laser Nephelometry) |
| Safety Rating | Non-explosion-proof |
| Range (Low) | 0.01–100 mg/m³ |
| Range (High) | 0.001–10 mg/m³ |
| Sensitivity (L) | 1 CPM = 0.01 mg/m³ |
| Sensitivity (H) | 1 CPM = 0.001 mg/m³ |
| Sampling Time Options | 0.1, 1, 2, 5, 10 min + manual mode |
| Accuracy | ±10% |
| Dimensions | 192 × 69 × 140 mm |
| Weight | 1.4 kg |
| Compliance | WS/T 206–2001, LD 98–1996, TB/T 2323–92 |
| Origin | Beijing, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (China) |
| Model | LD-5C |
| Price | ¥27,800 |
| Sampling Method | Real-time Laser Scattering with Optional Filter-Based Gravimetric Validation |
| Particle Size Selectivity | PM₁₀ / PM₅ / PM₂.₅ via Interchangeable Impactors |
| Concentration Range | LD-5C(L): 0.01–100 mg/m³ |
| LD-5C(H) | 0.001–10 mg/m³ |
| Detection Limit | LD-5C(L): 0.1 mg/m³ |
| LD-5C(H) | 0.001 mg/m³ |
| Display | Backlit LCD with Chinese Character Menu |
| Data Storage | 99 Cyclic Records |
| Sampling Duration | Configurable from 0.1 min to user-defined intervals (1–9999 s) |
| Communication Interfaces | RS232 Serial Port, Thermal Printer Output, 0–1 V Analog Output, Digital TTL-Level Output |
| Power Supply | Rechargeable Ni-MH Battery (8 h continuous operation), AC/DC Adapter Included |
| Origin | Beijing |
|---|---|
| Manufacturer Type | Distributor |
| Origin Category | Domestic |
| Model | P5-L2C |
| Price | ¥18,600 |
| Operating Principle | Light Scattering (Nephelometric) |
| Safety Rating | Non-Explosive |
| Measurement Range | 0.01–100 mg/m³ |
| Resolution | 0.01 mg/m³ |
| Accuracy | ±10% |
| Sampling Duration Options | 0.1, 1, 3, 5, 10, 15 min or user-defined manual interval |
| Display | 4-digit LCD showing CPM and mass concentration (mg/m³) simultaneously |
| Data Output | RS-232 serial interface for PC connection |
| Data Storage | 99 measurement records |
| Environmental Operating Range | 0–40 °C |
| Power Supply | NiMH ×9 rechargeable battery (12 h continuous operation) |
| Dimensions | 202 × 84 × 183 mm |
| Weight | 3.4 kg |
| Origin | Japan |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | 3886 |
| Safety Rating | Non-Explosion-Proof |
| Weight | ~980 g |
| Display | 4-line × 20-character LCD |
| Dimensions | 115 mm × 70 mm × 211 mm |
| Data Storage Capacity | 500 samples (4 records per test in Calculation Mode) |
| Communication Interface | RS-232 or RS-485 (selectable via menu) |
| Power Supply | 4× AA Ni-MH rechargeable batteries (4.8 V, 1.6 Ah) |
| Sampling Flow Rate | 0.1 cfm (2.83 L/min) |
| Counting Channels | 0.3 µm, 0.5 µm, 1.0 µm, 3.0 µm, 5.0 µm |
| Minimum Detectable Particle Size | 0.3 µm |
| Count Range | 1–70,000,000 particles/ft³ |
| Sampling Duration | 1 s – 99 min 59 s (adjustable in 1-s increments) |
| Sampling Frequency | 1–99 cycles or continuous |
| Operating Temperature | 10–35 °C |
| Test Modes | Single, Repeat, Continuous, Calculation, Remote Control |
| Simultaneous Environmental Monitoring | Particle count + temperature + relative humidity + air velocity (with optional probes) |
| Error Indicators | Out-of-range count, laser power degradation, flow deviation > ±1%, low battery |
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