OBS-ONE-XL (IRLAM)

On-board NH₃/N₂O Emission Analyzer

The OBS-ONE IRLAM unit is an on‑board emissions measurement system that analyzes NH₃ and N₂O under real‑world driving conditions. It integrates with the GAS and PN units to capture exhaust gas concentrations, flow rate, GPS location, and ambient conditions, supporting future regulatory development.

OBS-ONE-XL (IRLAM)

On-board NH₃/N₂O Emission Analyzer

Why Choose OBS-ONE-XL (IRLAM)

High accuracy measurement with IRLAM™ infrared gas measurement method
High reliability and robustness, withstands temperature and vibration
No external utilities required (e.g., purge gas cylinders)
Seamless integration with OBS-ONE series modules for consolidated data
User-friendly vehicle-mountable design
Lab-grade correlation with MEXA-ONE-QL QCL-IR system

Key Advantages of OBS-ONE-XL (IRLAM)

Real-Time Dual-Gas Measurement

NH₃: 0–1500 ppm & N₂O: 0–1000 ppm

Accurate onboard emission profiling under RDE conditions

Rapid Response Time

NH₃: ≤2.5 s & N₂O: ≤1.5 s

Captures transient emission spikes during dynamic driving

Autonomous Operation

Approx. 3 h battery life & DC 22–28 V supply

Enables extended testing without external power

Environmental Robustness

Operating range: −10 °C to 45 °C & ≤80% RH

Reliable performance under harsh vehicle conditions

Applications of OBS-ONE-XL (IRLAM)

Real Driving Emissions (RDE) testing for light

Duty vehicles under WLTC protocols

Portable Emission Measurement System (PEMS) for heavy

Duty engine testing

Non‑road mobile machinery

emission monitoring under regulatory requirements

Tailpipe sampling

Direct injection gasoline vehicles

On‑board

Ammonia mapping for Euro 7 compliance strategies

Integration

In hybrid/electric vehicle powertrain emission assessments

Technical Specifications of OBS-ONE-XL (IRLAM)

OBS-ONE-XL01 Specification

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

Performance

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

Dimensions and system configurations

*6: Please contact us regarding details such as installation