Operation Mode - Zuzi 300 Serie Manual De Instrucciones

In general, the refractive index of a thicker
transparent substance is higher than a less
thick liquid, it means, the light speed is sma-
ller in a substance with higher density. Then,
if a ray incides in an oblique way on an envi-
ronment with a higher refractive index, it will
be deviated to the normal, whereas if it inci-
des on an environment with a smaller refrac-
tive index, it will move away from it. The
rays that incide on the direction of the nor-
mal are reflected and refracted in the same
direction.
Figure 6

5. OPERATION MODE

Take out the instrument from its packing
and remove all protections
Open the prism cover plate (1.2) and clean
both the cover plate and the prism (1.1) with
alcohol and a fluff-free soft cloth; be very care-
ful not to scratch the prism surface.
Direct the prism towards a bright light and
adjust the diopter ring (1.5) until the scale is
focused.
To calibrate the instrument put one or two
drops of distilled water or reference sample on
the prism (fig. 7.2) and close the plate.
By turning the scale adjustment screw (1.3)
make the white/blue boundary line match the
value 0 in the scale in case of distilled water, or
the corresponding value in case of a known
concentration reference sample.
Open the plate, clean and wipe the prism
and the plate, and put one or two drops of
sample on the prism; close the plate and loo-
king through the eyepiece, read the concentra-
tion result on the scale (fig. 7.3).
Figura 7
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Version 7 Feb 2011
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Manual 5030XXXX Page 29