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| Origin | China |
|---|---|
| Manufacturer Type | Distributor |
| Model | HS6288B |
| Price | USD 1,390 (FOB) |
| Frequency Range | 31.5 Hz – 8 kHz |
| Sound Pressure Level Range | 35–130 dB(A), 40–130 dB (Linear) |
| Self-Noise | <20 dB(A) |
| Time Weighting | Fast (F), Slow (S), Max Hold |
| Measurement Functions | Leq, LAE, LN (L10/L50/L90), Lmin, Lmax, SD, Ld, Ln, Ldn |
| Measurement Durations | Manual trigger, 10 s, 1 min, 5 min, 10 min, 20 min, 1 h, 8 h, 24 h, and full-hour synchronized logging |
| Display | 54 × 42 mm LCD with analog bar graph, real-time time stamp, measurement mode indicator, and 1/1-octave center frequency readout |
| Interface | RS-232 serial port for PC connectivity and data export |
| Standard Accessories | HS6288B(D) main unit, 4784A thermal printer (with charger), mounting bracket, software CD, thermal paper roll, 18″ protective carrying case, windscreen, screwdriver |
| Optional Accessories | 5 m / 10 m extension cables, Class 1 acoustic calibrator (e.g., HS6020) |
| Brand | Huayun Instruments |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | HY-400 (New) |
| Price | USD 5,600 (FOB Beijing) |
| Temperature Control Accuracy | ±0.1 °C |
| Setpoint Range | –20 °C to +10 °C (factory default: 4 °C) |
| Dimensions (W×H×D) | 484 × 178 × 320 mm |
| Gas Path Material | PTFE-lined stainless steel |
| Cooling Method | Staged refrigeration + condensate aggregation |
| Mounting | Panel-mount (19″ rack compatible) |
| Liquid Level Alarm Output | Dry contact relay (NO/NC configurable) |
| Integrated Pump Mounting | Yes (for sampling pump & peristaltic drain pump) |
| Origin | China |
|---|---|
| Type | Portable |
| Measurement Range | 60–140 dB (re 10⁻⁶ m/s²) |
| Frequency Range | 1–80 Hz |
| Frequency Weightings | Whole-body vertical (VLz), whole-body horizontal (VLx-y), linear (VAL) |
| Dimensions (main unit) | 24 × 8.1 × 3.1 cm |
| Weight (main unit) | 0.4 kg |
| Data Storage Capacity | 127 measurement sets |
| Compliance | ISO 2631-1, ISO 5349-1, and IEC 61260 Class 2 requirements for vibration meters |
| Origin | Beijing, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (PRC) |
| Model | N962A |
| Instrument Type | Hot-Wire Anemometer |
| Resolution | 0.01 m/s |
| Accuracy | ≤ ±5% |
| Operating Temperature | 0–40 °C |
| Operating Relative Humidity | 0–85% RH |
| Measurement Range | 0–30 m/s (auto-ranging across 0–10 / 0–20 / 0–30 m/s) |
| Power Supply | Rechargeable Ni-MH Battery (memory-free) |
| Display | Large-format LED |
| Sensor Element | Thin-film Platinum RTD (ceramic substrate) |
| Compliance | Designed for GLP-aligned field use in occupational & environmental monitoring |
| Brand | Huayun Instruments |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | HY-400 |
| Price | USD 5,600 (FOB Beijing) |
| Brand | Huayun Instruments |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | OEM Manufacturer |
| Region Category | Domestic (China) |
| Model | HY-4000 |
| Price | USD 4,200 (FOB Beijing) |
| Gas Mixing Ratio Range | 0.1–99.9% of source gas |
| Output Flow Rate | 600 mL/min |
| Mixing Accuracy | ±1% |
| Linearity Error | ±1% |
| Repeatability | ±1% |
| Response Time | ≤5 s |
| Output Pressure | 34 kPa |
| Operating Temperature | 0–50 °C |
| Dimensions | 240 × 300 × 120 mm |
| Weight | 1.8 kg |
| Brand | Huayun Instruments |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Model | GXH-3011 (4U) |
| Measurement Principle | Non-Dispersive Infrared (NDIR) |
| Target Gases | NO, CO, CO₂, O₂ (configurable per unit) |
| Measurement Ranges | NO: (0–500) to (0–5000) ppm |
| CO | 0–0.500% vol |
| CO₂ | 0–0.500% vol |
| Linearity Error | ≤ ±2% F.S. |
| Repeatability | ≤ 1% F.S. |
| Zero Drift | ≤ ±2% F.S. / 72 h |
| Span Drift | ≤ ±2% F.S. / 72 h |
| Response Time (t₀–t₉₀) | ≤ 15 s |
| Output Signal | 4–20 mA (max 3 isolated channels, load ≤ 500 Ω) |
| Power Consumption | ≤ 120 W |
| Supply Voltage | 220 VAC ±10%, 50 Hz ±10% |
| Enclosure | 19″ 4U rack-mount chassis (360 mm H × 482.6 mm W × 300 mm D) |
| Weight | ≤ 10 kg |
| Operating Temperature | 5–45 °C (non-condensing, no direct sunlight) |
| Relative Humidity | ≤ 80% RH |
| Ambient Airflow | ≤ 0.5 m/s |
| Installation | Horizontal mounting only |
| Electrical Isolation | Dedicated circuit recommended—avoid shared supply with inductive loads (e.g., large motors, RF furnaces) |
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