IWAKI EWN -B16 TC, Инструкция по эксплуатации

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42
Flow rate, stroke rate and stroke length
Precautions of flow rate adjustment
•
When back pressure is high
Set stroke length to 100% and adjust a flow by changing a stroke rate.
• When a flow rate per shot greatly influences the reaction in neutraliza-
tion or titration application
Shorten a stroke length to reduce a flow rate per shot. And then adjust a flow
by changing a stroke rate.
• When pumping gaseous liquid such as sodium hypochlorite (NaClO)
and hydrazine solution (N
2
H
2
O
2
)
Set a stroke length to 100% and adjust a flow by changing stroke rate.
Note air lock may occur when stroke length is set too short.
■ Stroke rate adjustment
A stroke rate can be set by keypad operation from 0.1 to 100%. The relation
between a flow rate* and a stroke rate is shown as below.
B type C type
*
The flow rate described on the
nameplate is at 100%.
Fixed stroke rate
100
%
75
50
25
0
25 50 75 100
%
D
is
ch
ar
ge
c
apa
ci
ty
Stroke length adjustment
Stroke rate is fixed at 100%
Stroke rate is fixed at 75%
Stroke rate is fixed at 50%
Fixed stroke rate
100
%
75
50
25
0
25 50 75 100
%
D
is
ch
ar
ge
c
apa
ci
ty
Stroke length adjustment
Stroke rate is fixed at 100%
Stroke rate is fixed at 75%
Stroke rate is fixed at 50%
Fixed stroke length
100
%
75
50
25
0
50 100
%
D
is
ch
ar
ge
c
apa
ci
ty
Stroke rate adjustment
Before operation