1.3
Principle of Measurement
A-B
TOTAL
Signal processing in mode P
Signal processing is performed using the upper and lower parts of
the photodiode
as
individual elements. Since the boundary between
the upper and lower parts
is
slanted against a horizontal line, when
an
image of the slit moves horizontally, the balance of the light
intensity in the
parts of the diode changes.
change
in balance is converted into refractive index. The change
of the bal-
ance against the variation of the refractive index is one-twentieth
that
of
mode
A.
In
mode
A,
when the slit image goes beyond the
center line, measurement becomes impossible because the balance
value stops varying, while in mode
P,
measurement is possible
under
these
conditions enabling measurement of a sample with high
concentration.
A-B
Signal processing in mode L (An optional flow selection
block
is necessary)
Signal processing is performed
as
the same
as
in mode
P,
using
each
of the upper and lower parts of the diode
as
individual ele-
ments. However, since the reference side with less flow line resis-
tance is used
as
the sample cell, the image moves in the reverse
direction of that
of
mode
P.
Thus polarity is turned over
before
the
change in balance
is
converted into a
index.
B-A
A
1-5
RID-1OA
Summary of Contents for RID-10A
Page 19: ...Chapter 2 Parts List c v 3 2 1 Parts and Accessories 2 2 1CONTENTS 1 2 1 RID 1OA...
Page 63: ...c Chapter 6 Initial Performance Test 1 6 1 System Performance Check 6 2 6 1 RID 1OA...
Page 102: ...Chapter I 1 Specifications 11 1 RID 10A Specifications 11 2 I CONTENTS I 11 1 RID 1OA...
Page 105: ...Parts I 12 1 Consumablesand Repair Parts 12 2 12 2 Optional Parts 12 4 12 1 RID 1OA...
Page 109: ...Chapter 13 Reference I i L 13 1 Solvent Characteristics 13 2 I 13 1 RID 1OA...
