G - Physics – 01 – N
Patent
G - Physics
01
N
73/59, 33/63, 35
G01N 15/02 (2006.01) G01N 21/53 (2006.01) G01N 15/00 (2006.01) G01N 21/15 (2006.01)
Patent
CA 1292628
AN IN SITU PARTICLE SIZE MEASURING DEVICE ABSTRACT OF THE DISCLOSURE A particle size measuring device for effecting with regard to particles present in a fluid substance the simultaneous measurement in situ of two parameters thereof; namely, particle size distribution and volumetric density. The particle size measuring device comprises a laser light source (14), a laser light conveying device (40), a collimator, a first focusing device (64), a defined sample path (74) through which particles to be measured pass, a second focusing device (78) and a detector device (82). The mode of operation of the particle size measuring device is such that the laser light from the laser light source (14) is conveyed by means of the laser light conveying device (40) to the collimator. After being collimated the laser light is transmitted to the first focusing device (64) whereby the laser light is focused and is then made to pass across the sample path (74). In the course of passing across the sample path (74), the laser light is scattered by the particles that are present in the sample path (74). Both scattered and collimated light is collected by the second focusing device (78) and then focused thereby on to the detector device (82) such that the intensity distribution of the laser light is gathered by the detector device (82). Particle size distribution is inferred from the light distribution received by the detector device (82) and volumetric density is calculated by means of a predetermined equation.
528126
Niziolek James Martin
Sutton James Phinazee III
Combustion Engineering Inc.
Smart & Biggar
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