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.

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