Above: The Analex RPD Rotary Particle Depositor
Below: The wear debris sample is separated into three concentric rings for analysis, using the action of a magnetic, centrifugal force.
Ferrography is used routinely by oil companies, transportation authorities, armed forces, construction industry, mining companies etc. Typical applications concern oil samples from transmission systems, final drive units, gearboxes, diesel engines and hydraulic systems.
Below: Samples and a solvent solution are precisely adminstered to the slide by syringe.
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Analex RPD Rotary Particle Depositor FG-K15003-KW
The RPD Rotary Ferrograph offers a rapid and simple method of debris separation. 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 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 sample is around 10 minutes.
The RPD combines magnetic and centrifugal separation. It is faster than both the AF and DRF techniques and presents a 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 debris being produced. The separated debris can also be measured quantitatively by placing the substrate in an Analex PQ Ferrous Debris Monitor.
Features
United Kingdom Patent No: 2172220
United Kingdom Patent No: 210388
AC power input: | 115/230 V +/- 10% |
Dimensions: | 360 mm x 360 mm x 450 mm |
Display: | Backlit alphanumeric LCD |
Electrical connection: | IEC 6A 3 pin connector |
Operating temperature: | 10-30 ºC |
Power consumption: | 75 watts |
Rotational speed range: | 0-200 rpm (4 preset speeds) |
Sample frequency range: | 47 to 63 Hz |
Weight: | 5.5 kg |
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