MICRO-PSS - Portable Particulate Sampling System
Particulate sampling system for endothermic engines (on-board version)
MICRO-PSS is a particulate sampling system employing the methodology of the partial dilution sampling. MICRO-PSS can be considered as the small version of PSS-20 and it can be used with any type of engine regardless of its size and power.
This unit complies with the specifications relating to the sampling of particulates in transient cycles, defined in the international ISO 16183 procedure and used as the basis for current European and American regulations.
MICRO-PSS is a completely independent and compact unit, its total weight is about 35 kg and that is the reason why it can be used directly on the vehicle for road surveys. The system only requires 24 V DC power supply and it can be installed in a few minutes.
MICRO-PSS is equipped with low inertia flow meters connected to volumetric pumps with variable speed. This configuration allows to obtain a response time under dynamic conditions less than 0,2 seconds ("transformation time" according to ISO 16183). The instrument can therefore be used in real-time, without the need for preliminary tests.
The use of mechanical volumetric flow meters guarantees the repeatability of the calibration even over very long times.
MICRO-PSS can be equipped with a sensor for continuous particulate matter reading (PPM), which operates by electrically charging the particles. Once this reading has been integrated and corrected by means of the indication obtained from the filter, it is possible to know the real-time evolution of the particulate matter during the test.
Advantages
- Easy to use
- Easy to move on the vehicle
- No need of water/air supply
- It can be used on on-road transient cycles
- It can be used with every type of engines
- Low inertia and high stability Flow meter
- Response time < 0,2 s
- No need of calibration before the test
- SW included
- Remote control through AK protocol
Standard references
ISO 8178
ISO 16183
Directive 2008/74/EC
Directive 2005/78/EC
Directive 2005/55/EC
Directive 2004/26/EC
EPA 40 CFR 1065
- Dimensions and weight 650 x 500 x 350 mm, 35 kg
- Power supply 230 V AC – 2 kW
- Pumps maximum flow rate 2 m3/h
- Flow meters accuracy ± 0.2% of reading
- Transformation time (ISO 16183) < 0.15 sec
- Standard regression correlation coefficent [R2] > 0,98
- Filter size 47 mm
- Dilution ratio constan or variable
- Dilution air filter type HEPA
