KGD-WQ-513 Vehicle Emission Gas Analyzer with High-Precision Micro-Flow Infrared Sensor for Direct NO and NO₂ Measurement and Multi-Stage Filtration
The KGD-WQ-513 Vehicle Emission Gas Analyzer (Gasoline Vehicle) detects the concentration of NO based on high-precision micro-flow infrared dual-gas-chamber sensor technology with independent intellectual property rights and an international PCT patent (PCT/CN2018100767). The sensor adopts a dual-gas-chamber structure and special filters, which solves problems such as environmental temperature instability and aging of electronic components.
It measures the concentration of NO₂ based on the non-dispersive ultraviolet (NDUV) absorption method without the need for a NOₓ converter. It simultaneously detects the concentrations of HC, CO, and CO₂ in vehicle exhaust based on the principle of non-dispersive infrared (NDIR) absorption technology, and measures the concentration of O₂ using long-life electrochemistry (ECD) analysis technology, and automatically calculates and displays the air-fuel ratio.
- Directly measures NO and NO₂ without the need for a NOₓ converter. It has a compact structure and requires no maintenance in the later stage.
- High measurement accuracy, good stability, strong anti-interference ability, and is not affected by moisture.
- Multi-stage filtration, which makes the system more durable.
- Core software algorithm that can perform linear correction processing on gas concentration signals.
- Automatic temperature and pressure compensation, and reserves interfaces for oil temperature and rotational speed.
| Gas Type | Measuring Range | Absolute Error | Relative Error |
|---|---|---|---|
| HC | (0 - 2000)×10⁻⁶VOL, (2001 - 5000)×10⁻⁶VOL, (5001 - 9999)×10⁻⁶VOL | ± 4×10⁻⁶VOL | ± 3%, ± 5%, ± 10% |
| CO | (0.00 - 10.00)×10⁻²VOL, (10.01 - 14.00)×10⁻²VOL | ± 0.02×10⁻²VOL | ± 3%, ± 5% |
| CO₂ | (0 - 16.0)×10⁻²VOL, (16.01 - 18.0)×10⁻²VOL | ± 0.3×10⁻²VOL | ± 3%, ± 5% |
| NO | (0 - 4000)×10⁻⁶VOL, (4001 - 5000)×10⁻⁶VOL | ± 25×10⁻⁶VOL | ± 4%, ± 8% |
| NO₂ | (0 - 1000)×10⁻⁶VOL | ± 25×10⁻⁶VOL | ± 4% |
| O₂ | (0.0 - 25.0)×10⁻²VOL | ± 0.1×10⁻²VOL | - |
Note: The absolute error and relative error listed in the table, meeting one of the requirements is sufficient.
- Resolution: NO/NO₂: 1ppm; CO₂: 0.01%
- Response Time: HC/CO/CO₂: T90 ≤ 8s; NO/NO₂: T90 ≤ 10s; O₂: T90 ≤ 12s
- Pre-heating Time: 30min
- Communication: RS-485/232
- Power Supply: 100-240VAC, 150W
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