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Operation
1-2. Adjustment of discharge capacity
Discharge capacity can be adjusted by adjusting a stroke rate or
stroke length, however, adjust it with stroke rate adjustment. Stroke
length adjustment is auxiliary way to cover the range where is not
obtained by stroke rate adjustment.
Precaution for stroke rate adjustment
1) When pumping gaseous liquid such as hydrazine solution
(N
2
H
2
O
2
), adjust stroke length to 100% and adjust stroke rate.
Discharge capacity may be reduced when stroke length is short.
2) When back pressure is high, set stroke length to 100% and adjust
discharge capacity by stroke rate adjustment.
3) In case the discharge capacity per shot greatly influences the
reaction in neutralization or titration application, have the stroke
length short to reduce capacity per shot. And then adjust it by
stroke rate adjustment.
Fixed stroke rate
100
%
75
50
25
0
25
50
75
100
%
Di
sc
h
a
rg
e c
a
p
a
ci
ty
Stroke length adjustment
(B type)
360spm
(Stroke rate is fixed at 100%.)
270spm
(Stroke rate is fixed at 75%.)
180spm
(Stroke rate is fixed at 50%.)
Fixed stroke rate
100
%
75
50
25
0
25
50
75
100
%
Di
sc
h
a
rg
e c
a
p
a
ci
ty
Stroke length adjustment
(C type)
360spm
(Stroke rate is fixed at 100%.)
270spm
(Stroke rate is fixed at 75%.)
180spm
(Stroke rate is fixed at 50%.)
1) Procedure to adjust dis-
charge capacity
Determine a suitable
stroke length and stroke
rate, taking account of the
pump operating condition
and liquid characteristics
etc. Following procedure is
recommended.
a. Set stroke length at 100%
and roughly adjust dis-
charge capacity by stroke
rate adjustment.
b. Measure discharged vol-
ume.
c. If measured volume is
less than required volume,
then increase stroke rate to
measure again discharged
volume.
d. Adjust stroke length for
fine adjustment of dis-
charge capacity.
e. Measure again the dis-
charged volume to confirm
the required volume is
obtained.
