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Product Details
Product Introduction
HM-HW300A is a synchronized dual-parameter portable non-dispersive infrared (NDIR) gas analyzer developed by HM Instruments for public hygiene monitoring, environmental surveillance, and occupational safety testing. Featuring twin independent NDIR optical absorption benches, HM-HW300A quantifies 0 to 50 ppm carbon monoxide and 0 to 0.500% (0 to 5,000 ppm) carbon dioxide simultaneously in a single intake cycle. Gas is continuously drawn by an internal low-vibration diaphragm pump, with sampling velocity monitored in real time via a digital flow sensor. Its 7-inch Android color touch interface displays synchronized dual-gas dynamic curves, multi-interval exposure averages (0.5h, 8h, and daily), and automated conversion across ppm, mg/m³, and percentage. Equipped with automatic zero calibration, internal thermostatic heating, an onboard thermal ticket printer, and Wi-Fi connectivity, HM-HW300A fully complies with JJG 635-2011 and GB/T 18204.2-2014 standards. Discover detailed deployment data on the HM-HW300A dual-gas infrared analyzer technical guide.
Applications
Integrated public place hygiene supervision simultaneously assessing carbon monoxide and carbon dioxide levels.
Environmental protection and disease control centers (CDC) conducting synchronous chemical pollutant evaluations.
Occupational health exposure assessments in metallurgical, automotive manufacturing, and chemical production workshops.
Building commissioning, green architecture IAQ certification, and HVAC dynamic ventilation auditing.
Underground parking structures, tunnel traffic corridors, and enclosed logistics hub environmental surveillance.
Functional Performance
Simultaneous dual-gas measurement of CO (0–50 ppm) and CO2 (0–0.500%) in a single portable device.
Twin non-dispersive infrared (NDIR) optical absorption benches ensuring zero cross-gas interference.
Internal continuous suction pump with real-time digital flow tracking from 0.5 to 2.0 L/min.
7-inch Android color touch interface with dual-channel graphical curves and intuitive menus.
Automated solenoid valve gas routing between zero calibration and active sample stream.
Dual zeroing methodology supporting pure nitrogen cylinder zeroing and field catalytic zeroing.
Internal thermostatic heating circuit guaranteeing high optical accuracy in cold outdoor settings.
Onboard thermal micro-printer issuing instantaneous dual-parameter test vouchers with QR codes.
Non-volatile memory logging over 100,000 dual-parameter measurement datasets.
Timed storage functions with automatic calculation of 0.5h, 8h, and 24h daily concentration averages.
Wireless Wi-Fi network connectivity (optional 4G module) and direct USB data export.
Main Parameters
| Parameter | Specification |
|---|---|
| Detection Principle | Non-dispersive infrared (NDIR) spectrometry |
| Target Gas | Air containing Carbon Monoxide (CO) and Carbon Dioxide (CO2) |
| Measurement Range | 0~50.0×10⁻⁶ (0~50 ppm) CO; 0~0.500% (0~5000 ppm) CO2 |
| Resolution | CO: 0.1×10⁻⁶; CO2: 0.0001% |
| Linearity Error | ≤ ±2% F·S |
| Repeatability | ≤ 1.0% |
Technical Parameters
| Parameter | Specification |
|---|---|
| Product Model | HM-HW300A |
| Detection Principle | Non-dispersive infrared (NDIR) spectrometry |
| Target Gas | Air containing Carbon Monoxide (CO) and Carbon Dioxide (CO2) |
| Sampling Method | Built-in precision suction pump |
| Measurement Range | 0~50.0×10⁻⁶ (0~50 ppm) CO; 0~0.500% (0~5000 ppm) CO2 |
| Resolution | CO: 0.1×10⁻⁶; CO2: 0.0001% |
| Operating Temperature Range | CO: 0~45℃; CO2: 20℃~65℃ |
| Operating Humidity Range | 0–95% RH (non-condensing) |
| Concentration Display | Automatic unit conversion across ppm, mg/m³, and % |
| Display Screen | 7-inch capacitive color touchscreen (Android OS) |
| Data Storage Capacity | > 100,000 complete measurement datasets |
| Zero Calibration | Automated zero point calibration (Nitrogen and Catalytic zeroing) |
| Linearity Error | ≤ ±2% F·S |
| Repeatability | ≤ 1.0% |
| Span Drift | ≤ ±2% F·S / 3h |
| Zero Drift | ≤ ±1% F·S / h |
| Carbon Dioxide Removal / Interference | 1250 mg/m³ CO ≤ ±0.3% F·S |
| Response Time | CO: t90+60s ≤ 45s; CO2: ≤60 s |
| Preheating Time | 5 min |
| Sampling Flow Rate | (0.5–2.0) L/min (digital flow tracking) |
| Data Output Interface | USB direct export to flash drive; Wi-Fi platform sync |
| Printer Configuration | Integrated micro-thermal printer with QR code printing |
| Alarm Function | Audible buzzer and visual flashing alarm |
| Power Supply | Built-in rechargeable lithium battery, AC/DC dual use (110–240 V AC / internal DC) |
| Instrument Dimensions | 257.3 × 147 × 300 mm |
| Package Dimensions & Weight | 12.5 kg (External: 257.3×147×300 mm, Package: 460×265×420 mm) |
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