Rotrode Filter Spectroscopy
Elemental analysis of large particles
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| Description |
Rotrode Filter Spectroscopy (RFS) is an analytical technique that enables rotating disc electrode (RDE) spectroscopy to detect and analyze large wear and contaminant particles in fluids. RFS supplements standard spectroscopy by providing additional information that can be used to determine the mechanical condition of machinery. |
With the addition of RFS analysis, the RDE technique can analyze particles greater than 10 micrometers in used oil samples. By trending the change in the ratio between standard RDE spectroscopy and RFS results, the two methods can be used to improve the detection and analysis of progressive wear. |
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| Demonstration video |
Click the "Play" button below to watch a demonstration video of the RFS
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| Downloads |
 RFS Brochure
Many application papers are available. Please contact us for further info.
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| Background |
The presence of large particles (>20 micron) can be indicative of impending catastrophic failure. Standard Atomic Emission Spectroscopy can only analyze particles up to 10 micron. Automated Rotrode Filter Spectroscopy (A-RFS) is a sample preparation device designed for the AES that concentrates large and small wear metal debris in a ...
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... graphite filter electrode. When the graphite filter electrode is analyzed using AES, sensitivity is increased by a factor of 80-100 and particle size detection is improved by a factor of 10. When the sample is prepared by the A-RFS device the particle size detection capability of AES is extended from 8-10 micrometers to greater than 70 micrometers. |
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| Advantages |
- Large contaminant and wear metal particles detected by RFS are missed by normal spectrometric oil analysis techniques.
- Complements normal spectrometric oil analysis with analytical results for large particles.
- Separates and concentrates particles on a disc electrode for analysis.
- Automatic and simultaneous preparation of up to five samples at one time.
- Economical and simple to use.
- Only consumables are carbon filters, rod electrodes and readily available solvents.
- Samples can be prepared and stored until ready for analysis
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