Wobo Industrial Equipment Co., Ltd.
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Product Overview
The vehicle emissions gas analyzer is a professional instrument designed to measure the concentration of multiple gas components in vehicle exhaust. It combines non-dispersive infrared (NDIR) technology with long-life electrochemical (ECD) sensors to accurately measure the volume concentration of gases such as CO, HC, CO₂, O₂, and NO.
The analyzer also features automatic air–fuel ratio calculation and display, providing more comprehensive data for emission testing. With its portable design, the device is suitable for various on-site and mobile testing environments. It is easy to operate, stable, and reliable, making it an essential tool for vehicle emission testing and environmental monitoring.
Working Principle
The analyzer operates using a combination of non-dispersive infrared absorption and electrochemical detection principles.
NDIR technology measures gases such as CO, CO₂, and HC by passing infrared light at specific wavelengths through the sample gas, where different components selectively absorb the light.
For gases like O₂ and NO, high-sensitivity electrochemical sensors are used. These gases undergo electrochemical reactions inside the sensor, generating electrical signals proportional to their concentration.
The system is equipped with a multi-stage filtration unit to remove impurities, ensuring measurement stability and accuracy. In addition, built-in algorithms automatically calculate the air–fuel ratio, enabling comprehensive analysis of combustion performance.
Key Features
- Compact & Portable Design: Lightweight and easy to carry, suitable for on-site and mobile testing applications.
- High-Precision Measurement: Combines NDIR and electrochemical sensing technologies for accurate multi-gas detection.
- Advanced Filtration System: Multi-stage filtering reduces the impact of particles and impurities, improving durability and reliability.
- Air–Fuel Ratio Calculation: Automatically calculates and displays air–fuel ratio for combustion analysis.
- Extended Functionality: Supports oil temperature and engine speed inputs for more comprehensive emission analysis.
- Fast & Stable Performance: Quick response and stable operation, suitable for continuous and high-frequency testing.
Applications
- Vehicle Emission Testing: Used in automotive manufacturing plants, inspection stations, and testing institutions for real-time exhaust analysis.
- Environmental Monitoring: Provides accurate emission data for regulatory agencies to support pollution control and compliance.
- Automotive R&D: Supports emission performance testing during vehicle and engine development, helping optimize combustion efficiency.
- Vehicle Inspection: Applied in periodic vehicle inspections to verify compliance with emission regulations.
- Maintenance & Tuning: Assists in vehicle servicing and tuning by providing emission data to optimize engine performance and meet standards.
| Gas Type | Measurement Range | Relative Error | Absolute Error |
| HC | (0~5000)×10⁻⁶，(5001~9999)×10⁻⁶ | ±5% | ±10×10⁻⁶ |
| CO | (0.00~10.00)×10⁻²，(10.01~14.00)×10⁻² | ±5% | ±0.03×10⁻² |
| CO2 | (0.0~18.0)×10⁻² | ±5% | ±0.5×10⁻² |
| NO | (0~4000)×10⁻⁶，(4001~5000)×10⁻⁶ | ±4% | ±25×10⁻⁶ |
| O2 | (0.0~25.0)×10⁻² | ±5% | ±0.1×10⁻² |
| Note: Either the absolute error or relative error listed in the table can be met. | |||
| Preheat Time | Communication | Power Supply | Display |
| 10 minutes | RS-485/RS-232, can connect to Gasboard series smoke opacity analyzers | 100~240VAC, 80W | LCD Display |
