The portable exhaust emission testing system can measure the concentrations of CO, CO2, NO, NO2, O2, THC emissions, as well as particulate matter, exhaust flow rate, navigation system data, environmental temperature and humidity, atmospheric pressure, and has functions such as testing process guidance, automatic calculation of total emissions, and export of test reports. The product adopts a modular design, and the portable battery supports a range of more than 6 hours, meeting the requirements of on-board emission testing for road vehicles.
Portable exhaust emission testing systemProduct Introduction
Portable exhaust emission testing systemGasboard-9805 is a portable emission testing system developed by Sifang Instrument based on self-developed core gas analysis technology. It can measure the concentrations of CO, CO2, NO, NO2, O2, THC emissions, as well as particulate matter, exhaust flow rate, navigation system data, environmental temperature and humidity, atmospheric pressure, and has functions such as testing process guidance, automatic calculation of total emissions, and export of test reports. The product adopts a modular design, and the portable battery supports a range of more than 6 hours, meeting the requirements of on-board emission testing for road vehicles.
Product Features
Core gas analysis technology independently developed
Direct measurement of NO, NO2High precision, no need for conversion furnace, maintenance free in the later stage
Easy to operate and user-friendly
Easy to operate, supports testing process guidance, automatically calculates total emissions, exports test reports, and other functions
Modular design, flexible use
GAS module, PN module, PM module, and THC module can all be used separately to meet different measurement needs of customers
Strong endurance, meeting the requirements of on-board testing
The battery supports a range of more than 6 hours and can complete a complete actual driving pollutant emission test
Excellent performance, meeting national standard requirements
GB 18352.6-2016 "Limits and Measurement Methods for Pollutant Emissions from Light duty Vehicles (Six Stages)"
GB 17691-2018 "Limits and Measurement Methods for Pollutant Emissions from Heavy duty Diesel Vehicles (Six Stages)"
Good environmental adaptability
The system has good adaptability to the environment and is not affected by vehicle vibration, atmospheric pressure, and changes in environmental temperature and humidity
System Configuration

Technical Specifications
| performance parameters |
| Gas analysis module |
measurement range |
C0:0~0.5~5% CO2:0~5~20% NO:0~3000ppm NO2:0~1000ppm O2:0~25% THC:0~100~10000ppmC1 |
| resolution |
CO2/O2:0.01% CO/NO/NO2/THC:1ppm |
| precision |
≤± 1% full scale (≥ 155ppm) ≤± 2% full scale (< 155ppm) |
| accuracy |
≤± 2% reading or ≤ 0.3% full scale |
Sensor response time T10-90
|
≤2.5s |
System response time T0-90
|
≤10s |
| Zero drift (4 hours) |
CO:≤±50ppm CO2:≤±1000ppm NO/NO2:≤±5ppm THC:≤±10ppmC1 |
| Range drift (4 hours) |
CO: ≤± 2% reading or 50ppm CO2: ≤± 2% reading or 1000ppm NO/NO2: ≤± 2% reading or 5ppm THC: ≤± 2% reading or 10ppmC1 |
| PN measurement module |
measurement range |
600~1.3*10⁹#/cm³ |
| Particle size range |
23nm~2500nm |
| accuracy |
≤±10% |
| VPR efficiency |
≥99% |
| Rise time T10-90
|
≤3s |
| Exhaust flow meter |
range |
65mm outer diameter: 10~600kg/h 85mm outer diameter: 100-2000kg/h |
| exhaust gas temperature |
-5~500℃ |
| accuracy |
≤± 2% reading or ± 1.0% of calibrated EFM * high flow rate |
| precision |
≤ 1% of high traffic |
| linearity |
Determination coefficient R ²: ≥ 0.990, standard deviation SEE: ≤ 2% of full scale Slope (al): 0.98-1.02, intercept coefficient (a0): ≤ 1% of full scale |
| Rise time T10-90
|
≤1s |
| working parameters |
| Working environment temperature |
-10~40℃ |
| working power supply |
24VDC,AC220±10%(50Hz) |
| interface signal |
| communication |
RS-485,Wi-Fi,RJ-45 Ethernet |