On-board Emissions Measurement System for NH3/N2O
The OBS-ONE IRLAM unit is an on-board emissions measurement system for analyzing the NH3/N2O under real-world driving conditions and supports our customer’s future regulatory development.
The IRLAM unit combines with the GAS unit and the PN unit to measure the specified exhaust gas components, along with the exhaust gas flow rate, the GPS position, and the atmospheric conditions (temperature, humidity, pressure).
◎ High accuracy measurement with HORIBA's innovative infrared gas measurement method "IRLAM™"
Click here for more information about IRLAM
*IRLAM is a registered trademark or trademark of HORIBA, Ltd.
◎ High reliability and robustness, can withstand environmental temperature and vibration
◎ No utilities required, such as purge gas cylinder
◎ Able to connect with other equipment in the OBS-ONE series and integrate data
◎ User-friendly design mounts easily on any vehicle
◎ High correlation with lab-use emission measurement system with QCL-IR (MEXA-ONE-QL)
Direct injection gasoline vehicle / WLTC-Cold / Tale pipe sampling
The OBS-ONE and other HORIBA ONE series systems employ a common user interface with future expandability. Control, monitoring and management of each emission measurement device and each module unit of OBS-ONE series can be integrated into a single controller.
| Measurement target | Light and heavy duty vehicle engine exhaust gas |
| Components and range | NH3 0 - 1500 ppm N2O 0 - 1000 ppm |
| Measurement principle | Quantum cascade laser infrared spectroscopy (QCL-IR) |
| Sample line temperature | 113°C |
| Sample gas flow rate | Approx. 3.3 L/min |
| Usage environment | Temperature: -10 °C to 45 °C *1 Humidity: Relative humidity 80% or less Altitude: 0 to 3000 m (above sea level) |
| Supply voltage | DC 22 to 28V |
| Power Consumption (when stable) *2 | DC 24 V 44 Ah Continuous use time: Approx.3 hours *3 |
| Battery (Nickel hydride battery) | Approx. 350 (W) × 470 (D) × 255 (H) mm |
| External dimensions *4 | Approx. 30 kg |
*1: Please contact us if temperature is below 0 °C
*2: With 2.5 m heated hose at ambient temperature is 20 °C
*3: With 2.5 m heated hose at ambient temperature is 20 °C, and depend on battery status
*4: Excluding protrusions
| Rise time from sample in t10-90 *5 | NH3 2.5 s or less, N2O 1.5 s or less |
| Drift (4 hours) | [Zero] within ± 0.15 % FS [Span] within ± 1.0 % (at ambient temperature 20 °C) |
| Zero noise (3σ) | NH3 0.2 ppm or less, N2O 0.15 ppm or less (at ambient temperature 20 °C) |
*5: At 6 m heated hose
*6: Please contact us regarding details such as installation
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