Compact X-ray fluorescence spectrometer for real-time wear metal

Details Compact X-ray fluorescence spectrometer for real-time wear metal Compact X-ray fluorescence spectrometer for real-time wear metal

1997-10-27

1999-11-09

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Fluorescence

378 45, G01N 23223

Patent

active

059828471

ABSTRACT:
A compact X-ray fluorescence spectrometer system dedicated to in-line, real-time analysis of wear metal particles in a lubricant used in a lubricating system that comprises a sample chamber, an X-ray source assembly, and an X-ray detector assembly. The sample chamber is substantially composed of a non-metallic material and has a cylindrical shape. The sample chamber is adapted for in-line connection to the lubrication system of the machine such that the sample chamber provides a passageway through which the lubricant flows. The sample chamber has an X-ray transparent window formed therein that allows the passage of X-rays so that the presence of wear metal particles can be detected in the lubricant. A high intensity, relatively small spot incident X-ray source assembly is configured to provide a source of X-rays directed toward the sample chamber such that said X-rays pass through the window in the sample chamber and contact the lubricant flowing therethrough. The X-ray source assembly may comprise either an electron-beam excited X-ray tube associated with a collimating/focusing assembly or, alternatively, an X-ray laser source. The X-ray detector assembly is configured to detect the X-rays emitted from the lubricant flowing through the sample chamber. The X-ray detector assembly generates a signal reflecting the X-rays emitted by the lubricant and comprises a collimating/focusing assembly capable of wide angle collection of the X-rays emitted from the lubricant flowing though the sample chamber and a low-noise X-ray detector. The system also includes a computer system and associated software for processing the signal in order to determine the presence and amount of wear metal particles in said lubricant.

REFERENCES:
patent: 3751661 (1973-08-01), Packer et al.
patent: 5497008 (1996-03-01), Kumakhov
patent: 5598451 (1997-01-01), Ohno et al.

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