OBS-ONE SPN10 Unit

OBS-ONE PN - On-board Emissions Measurement

OBS-ONE PN - Portable Emissions Measurement

On-board Emissions Measurement System for SPN10

On-board SPN10 measurement for real-world

The OBS-ONE SPN10 unit is an on-board emissions measurement system for analyzing the SPN10 (solid particle number emissions >10 nm) under real-world driving conditions. It meets the latest trends in particle number regulations in the future.
The SPN10 unit combines with the GAS unit and the NH₃/N₂O 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).

Segment: Automotive

Division: Emission Measurement Systems

Manufacturing Company: HORIBA, Ltd.

◎ High accuracy SPN10 measurement with CPC for proposed future regulations

◎ High precision and compact dimensions realized by the optimized pre-conditioning unit

◎ Improved testing efficiency with automatic zero check function (patent applied)

◎ Isopropyl alcohol as the working fluid : Safely used by saturation of a small cartridge during test preparation - no reservoir required

◎ User-friendly design mounts easily on any vehicle

Integrated Operating Platform

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.

Measuring Principles	Condensation particle counter (CPC)
Particle Diameter	10 ～ 1,000 nm
Measuring Range	0 ～ 5 × 10⁷ particles/cm³
Power Supply	DC 24 V
Power Consumption (MAX.)	Approx. 0.40 kW
Mass	Approx. 17 kg
Operating Condition	Temperature*: -10 ～ 40 ℃, Altitude: 0 to 2,500 m above sea level, Relative humidity: less than 80% (No condensation)
Condensation fluid	Isopropyl alcohol : minimum 99.5 % purity
Option	Outer cover for mounting outside the vehicle using a hitch carrier

*Surrounding temperature in setting position is 0 to 40 deg C.

Dimensions and system configurations

RDE Test with Portable Emission Measurement System (PEMS)

In 2016 the European Commission´s (EC) Member States agreed on new procedures and requirements for light-duty vehicle type approval certification introducing Portable Emission Measurement System (PEMS) for vehicle testing on the road.

Real driving emissions with RDE CoDriver

Real Driving Emission (RDE) tests confirm the results produced during an emissions test on a chassis dynamometer to ensure that vehicles meet the set limits in the real world.

Particle Measurement in the Sub-23nm Range

Concerns exist that advances in modern engine technology may contribute to large portions of solid particles at sizes smaller than 23nm. The EU Joint Research Center has confirmed this concern in several investigations.

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OBS-ONE SPN10 Brochure English