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| Origin | Beijing, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (China) |
| Model | QC-1S |
| Price Range | USD 140–700 (FOB) |
| Instrument Type | Conventional Gas Sampler |
| Configuration | Single-Channel Sampling System |
| Flow Rate Range | 0.1–1.5 L/min |
| Maximum Vacuum Pressure | >26 kPa |
| Flow Stability | ≤±5% |
| Flowmeter Accuracy Class | 2.5 |
| Service Life (at Max Flow & Backpressure) | 5–10 Years |
| Continuous Operation Duration (at Max Flow & Rated Resistance) | 2–8 h |
| Load Capacity | >1 L/min at 4 kPa Backpressure |
| Timing Accuracy | <0.1% |
| Operating Temperature | −10 to +45 °C |
| Dimensions (W×H×D) | 100 × 150 × 52 mm |
| Net Weight (incl. Rechargeable Battery) | 550 g |
| Origin | Beijing, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (PRC) |
| Model | QC-2B |
| Price Range | USD 140–700 (FOB) |
| Instrument Type | Conventional Gas Sampler |
| Configuration | Dual-Independent-Channel Sampling System |
| Flow Range | 0.1–1.5 L/min |
| Maximum Vacuum Pressure | >26 kPa |
| Flow Stability | ≤5% |
| Flowmeter Accuracy Class | 2.5 |
| Service Life Under Max Load & Backpressure | 5–10 years |
| Continuous Operation Duration at Max Flow & Rated Resistance | 2–8 h |
| Rated Flow | 2.5 L/min @ 4.5 kPa Backpressure |
| Timing Range | 1–99 h (adjustable in 1-min increments) |
| Timing Accuracy | ≤0.01% (based on real-time clock) |
| Dimensions | 210 × 125 × 95 mm |
| Power Supply | AC/DC dual-mode (rechargeable Ni-MH battery included) |
| Battery Runtime | ≥6 h continuous operation |
| Operating Temperature | −10 °C to +40 °C |
| Net Weight | 2.8 kg (including battery) |
| Control Architecture | Dual-channel independent electronic timer with synchronized start/stop capability |
| Brand | HuaShengPuXin (HSPX) |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | 24-Hour Temperature- and Flow-Controlled Gas Sampler |
| Configuration | Dual-Channel Sampling System |
| Flow Range | 0.4–0.6 L/min |
| Maximum Vacuum Pressure | >20,000 Pa |
| Load Capacity | >0.6 L/min at 10,000 Pa |
| Flow Stability | ≤5% |
| Flowmeter Accuracy | ≤±5% (within 6,000 Pa backpressure) |
| Timer Range | 1–99 min (timing error <0.1%) |
| Power Supply | AC 220 V, 50 Hz / DC 7.4 V Li-ion rechargeable battery |
| Continuous Operation Time | ≥6 h (battery-powered) |
| Operating Temperature | −10 °C to +45 °C |
| Dimensions | 210 × 125 × 80 mm |
| Weight (incl. battery) | 1470 g |
| Rated Service Life at Max Flow & Resistance | 5000 h |
| Runtime at Max Flow & Max Resistance | 2–8 h |
| Origin | Beijing, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (China) |
| Model | BS-H2 |
| Quotation | USD 920 (FOB Beijing) |
| Instrument Type | 24-Hour Temperature- and Flow-Controlled Gas Sampler |
| Instrument Configuration | Dual-Independent Sampling Channels |
| Flow Range | 100–500 sccm |
| Maximum Vacuum Pressure | >26 kPa |
| Flow Stability | ≤±1% FS |
| Flowmeter Accuracy | ±2.5% FS |
| Service Life Under Max Load & Resistance | 5–10 years |
| Continuous Operation Duration at Max Flow & Backpressure | 2–8 h |
| Origin | Beijing, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (PRC) |
| Model | QC-2 / QC-2A |
| Price Range | USD 140–700 |
| Instrument Type | Conventional Gas Sampler |
| Configuration | Dual-Channel Portable Sampler |
| Flow Rate Range | 0.1–1.5 L/min |
| Maximum Vacuum Pressure | >26 kPa |
| Flow Stability | ≤5% fluctuation (under load) |
| Flowmeter Accuracy | Class 2.5 (per GB/T 1226–2017 / equivalent to ISO 5167 Class 2.5) |
| Service Life (at max flow & resistance) | 5–10 years |
| Continuous Operation Duration (at max flow & 4.5 kPa backpressure) | 2–8 h |
| Timer Range | 1–99 min, timing error <0.1% |
| Power Supply | AC/DC dual-mode |
| Dimensions | 210 × 125 × 95 mm |
| Weight | 2.9 kg |
| Pump Type | Diaphragm vacuum pump (QC-2A variant features high-torque diaphragm pump optimized for VOC sampling with elevated backpressure tolerance) |
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | Sensidyne IAQ-Pro |
| Instrument Type | 24-Hour Isothermal & Isokinetic Gas Sampler |
| Instrument Configuration | Dual-Channel Air Sampler |
| Flow Range | 100–600 cc/min |
| Maximum Vacuum Pressure | >26 kPa |
| Flow Stability | ≤ ±5% |
| Flowmeter Accuracy | ≥ ±2.5% |
| Service Life at Max Flow & Backpressure | ≥5000 h |
| Continuous Operation Duration at Max Flow & Max Backpressure | 2–8 h |
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