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A P P E N D I X A
Optical unit specification
P a g e A . 2
G e t t i n g
S t a r t e d
Scattering angle
0.01 - 135 degrees (over the 3 ranges of Mastersizer S).
range.
0.03-50 degrees (over the 3 ranges of Mastersizer X ).
0.01-50 degrees (over the 4 ranges of long bench Mastersizer X).
Number of size
Up to 100 uniformly spaced on logarithmic or linear plot or user selectable.
classes.
Primary output.
Relative volume size distribution, diffraction energy data and laser beam
obscuration.
Secondary
Relative volume concentration.
output.
Volume distribution on sieve size classes.
Transformation of volume distributions to surface area, length and number
distributions and reverse transformations.
Derived diameters (D[4,3] to D[1,0]) which include volume, surface and
number mean diameters.
Sauter Mean Diameter.
Volume distribution percentiles (user selectable).
Moments of the volume, surface and number distributions, up to 4th
(kurtosis).
Documentation.
Tabulated on screen.
Plotted on screen.
Stored/recalled to disc.
Transferred over RS232.
Printed reports.
Description.
Transmitter and receiver units mounted on a rigid optical bed, with
provision for mounting sample presentation cells & accessories.
Laser transmitter.
Minimum 2mW He-Ne Laser (633nm wavelength) with 18mm beam
diameter, collimated and spatially filtered to a single transverse mode.
M A N
0 1 0 1
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