Chapter 2 Hardware features
Page 2-10 MAN 0386
ing (the cell window tool used to remove the window is located within the cell
holder). The cell windows are delicate and should be treated with caution - refer to
the Essentials Manual for details on cleaning these windows.
Vacuum monitor connector
A tube from this connector attaches to the vacuum monitor connector on the rear
panel of the dispersion unit. This senses whether the vacuum unit is working. This
is a fail-safe device that prevents the sample being fed until the vacuum unit is on,
allowing the powder to be safely disposed of.
Earth lead
This earth lead must always be connected. It prevents the particles being charged.
Exhaust connector
The vacuum tube from the vacuum unit is connected here. A vacuum unit must be
used to prevent samples being discharged into the laboratory.
Cell holder
The Mastersizer system allows more than one sample dispersion unit to be con-
nected at once. The cell holder provides a convenient storage location for the cell
(and the window removal tool) if another dispersion unit is being used.
The cell holder has a special fixing located on the left of the optical bench especially
for air cells. See
for details on how to fit the holder.
Disconnect the sample tube to the cell before storing the cell in the cell holder.
Cell holder fixing
There is a fixing plate under the cell holder which can be extended by undoing the
two hand screws and sliding the plate out. Re-tighten the hand screws to lock the
plate in place.
The cell holder can then be attached to the left side of the optical bench by locating
the fixing plate onto the two lugs on the underside of the optical bench.
MAN0386-1.0 Scirocco 2000.book Page 10 Friday, March 16, 2007 4:15 PM
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