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The RPD Rotary Ferrograph offers a rapid and simple method of debris separation and particle size analysis. A measured volume of sample is applied, by pipette, to a glass substrate located on a rotating magnet assembly. Particles of debris are deposited radially as three concentric rings by the combined effects of rotational, magnetic and gravitational forces.

Ferrography "Ferrography" may be divided into two techniques:

1. Analytical ferrography (AF), which separates wear debris (particles or varying sizes) from used oils by magnetic methods, producing glass slides for subsequent examination by microscopy. Preparation time per sample is about 20 minutes.
2. Direct reading ferrography (DRF), which separates the debris into small and large particles and gives a quantitative measurement by a photometric method. Analysis time per oil sample is around 10 minutes.

The RPD combines magnetic and centrifugal separation. It is faster than both the AF and DRF techniques and presents an oil sample ready for microscopy in about 6 minutes. Additionally, unlike DRF technology, the RPD Rotary Ferrograph does not require the sample to be diluted and does not suffer from interference due to carbonaceous material in the sample. Removal of the lubricant by solvent washing and drying gives a stable well-separated deposit pattern ready for examination by optical or electron microscope.

The 'Guide to Wear Particle Recognition', which is supplied with the RPD, provides users with an indication of the type of wear taking place by observation of the distinctive features or compositional aspects of the wear debris being produced. The separated debris can also be measured quantitatively by placing the substrate in an Analex PQ Ferrous Debris Monitor.

Features

• Simple method of wear debris separation, enabling you to effectively analyse the results of your oil sample.
• An uncontaminated wear debris sample is produced - carbonaceous material is removed
• Excellent particle separation - deposition path length is equivalent to a linear 160mm, with a wide particle size range - typically 1 to 2000 microns.
• Supplied complete with a comprehensive "Guide to Wear Particle Recognition.
• The separated debris can also be measured quantitatively by placing the substrate in an Analex PQ Ferrous Debris Monitor.

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United Kingdom Patent No: 2172220
United Kingdom Patent No: 210388