Metrohm NIRS XDS MasterLab Analyzer - Manual (Page 40)

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5. The vertical post of the adjustment is
marked in 1mm (about 0.040”)
increments. The rotary knob is marked
in 50 increments. One marking on the
knob equals 0.01mm in vertical position.
It takes two full rotations of the knob
per marking on the vertical post.
Therefore, to move the height upward
by one marking on the post, rotate the
knob two full turns CCW. One mark on
the post equals 0.5mm.
Set the height to be approximately
0.5mm (0.020”) above the height of the
thickest tablet. (Tablets will vary
somewhat in height due to tablet press
and material tolerances.) A good rule of
thumb is to make note of any tablets
that appear high, and use one of them
as a measuring point. A shim may be
used to assure consistency.
Be sure the marking on the rotating
scale is lined up correctly with the
vertical line on the post. Record this
setting for use every time this type of
tablet is scanned.
6. Lock the transmission detector height,
tighten the cap screw on the left side of
the detector, using a 1/16” Allen
wrench, provided in the accessory kit.