Particle Counting in Diesel Fuel

Why measure particles in diesel fuel?

Fuel quality has a direct impact on performance and component longevity
Cleanliness, or more specifically particle content, is a key factor in fuel quality
Problems caused by particles are blockage, wear and erosion in fuel systems

Diesel Fuel

Fuel cleanliness

Cleanliness limits in the World Wide Fuel Charter are presented in terms of particle counting
Particle counting is a recognised, established cleanliness determination, with very good repeatability and reproducibility, it is non subjective and available real time

Test methods

There are a number of internationally accepted test methods, some of which are mandatory for release of fuel from a refinery
Energy Institute test method IP 565 for aviation turbine fuel (mandated in fuel specification Def Stan 91-091)
ASTM test method D7619 and D7467 for middle distillate fuels (referenced in D975 diesel spec)
The above test methods were developed by Stanhope-Seta using the AvCount light obscuration particle counter
ISO EN 590 developing particle counting method
Energy Institute will shortly issue IP PM FA, determination of dispersed particles

How does the AvCount Lite SA1800-2 help?

A compact, portable instrument that can be battery or mains powered allows use within the distribution network or in the laboratory
Samples can be drawn from bottles or on-line with real-time test progress and results displayed, allowing for immediate corrective action
Simple to use with an automatic test procedure using only 80 ml fuel (IP 565/ASTM D7619)
Pre-programmed with three test methods including ASTM D7619, covering middle distillate fuels including diesels, bio-diesels and bio-diesel blends