OBS-ONE PN Unit
On-board Emissions Measurement System
The OBS‑ONE PN Unit is a compact on-board emissions measurement device, engineered for real-world driving environments. It applies a condensation particle counter (CPC)—aligned with the UNECE Particle Measurement Program (PMP)—to continuously measure solid particle number concentration within a size range of 23 nm to 1,000 nm
Why Choose OBS-ONE PN Unit
RDE-Regulation Ready – Meets Euro 6 draft RDE standards with PMP-compliant operation.
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Compact, Vehicle-Friendly Design – Features a modular housing with no alcohol reservoirs—uses cartridge-based isopropyl saturation.
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Complete On-Vehicle Integration – Supports exhaust gas flow, GPS, and environmental parameter tracking through one synchronized system.
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Unified Control Platform – Operates seamlessly under the HORIBA ONE interface, allowing full module integration and control.
Key Advantages of OBS-ONE PN Unit
1.
Compliance for Particle Counting
Delivers regulatory-grade solid particle number measurement for certification and R&D workflows.
2.
Compact & Maintenance-Smart
Eliminates bulky alcohol reservoirs—simplifies setup and reduces vehicle load.
3.
Data-Rich On-Road Measurement
Captures particle counts in tandem with mass airflow and ambient conditions for precise mass-based emissions analysis.
4.
Integrated Control Ecosystem
Centralizes device management and data handling across OBS-ONE PEMS modules.
Technical Specifications of OBS-ONE PN Unit
| Measuring Principles | Condensation particle counter (CPC) |
| Particle Diameter | 23 ～ 1,000 nm |
| Measuring Range | 0 ～ 5 × 107 particles/cm3 |
| Power Supply | DC 24 V |
| Power Consumption (MAX.) | Approx. 0.25 kW |
| Mass | Approx. 18 kg |
| Operating Condition | Temperature: -10 ～ 40 ℃, Altitude: 0 to 2,000 m above sea level, Relative humidity: less than 80% (No condensation) |
| Condensation fluid | Isopropyl alcohol a special grade reagent (99.5%) corresponded |
| Option | Outer cover for mounting outside the vehicle using a hitch carrier |
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