Malvern Mastersizer Series Getting Started page 27

À Sample area cover
Protective cover over the sample area. Designed to protect the operator from laser
radiation and to keep the amount of background light to a minimum during a
measurement.
#
Warning!
The sample area coremoved for spray measurements. Read the safety manual
before removing the sample area cover.
Unless you are performing spray measurements do not attempt to remove the
sample area cover.
Á Beam expander
The beam expander is used to increase the diameter of the laser beam. Once the
laser beam has been expanded it is known as the analyser beam.
N o t e
. The beam expander is actually part of the transmitter optics but has
'
been included here for clarity.
 Range lens
The purpose of the range lens is to collect the laser light that has been scattered
from the sample and focus it onto the detector electronics.
Both the Mastersizer X and Mastersizer S have a number of range lenses available,
with each lens covering a different size range of particles. A list of lenses available
and their corresponding size range is given below.
Mastersizer X
Lens
45mm
100mm
300mm
1000mm*
* The 1000mm range lens are available on long bench versions only.
Mastersizer S
Size range Lens
0.1 - 80µm 300RF
0.5 - 180µm 300mm
1.2 - 600µm 1000mm*
4.2 - 2000µm
G E T T I N G
C H A P T E R 2
Size range
0.05 - 880µm
0.5 - 880µm
4.2 - 3480µm
P a g e 2 . 5
S T A R T E D