En
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46
9.6.1 Calibrating pumps with Plus
3
system
(internal calibration)
1. Before opening the second menu level, close the
isolating valve (D) on the calibration tube (E) and
allow the pump to dose a couple of strokes so
that the liquid level is within the scale.
2. Stop the pump.
3. Slowly open the isolating valve (D) and allow the
dosing medium to rise to the top of the scale in
the calibration tube. Close the isolating valve (D).
4. Open the calibration menu.
– "OFF CAL" appears in the display.
1. Press the "Up" button.
– "ON CAL" appears in the display.
2. Press the "Start/Stop" button.
– Calibration is started. The LED flashes green
and "Run" flashes in the display.
3. Press the "Start/Stop" button to stop the
calibration when the liquid level reaches the
bottom of the scale.
– The LED lights up red.
4. Press the "Start/Stop" button.
– The current calibration value is displayed
(not with replacement circuit boards!).
5. Use the "Up" and "Down" buttons to enter the
calibration value (read volume in ml).
The pump electronics automatically calculates the
calibration value based on the actual strokes
performed.
6. Open the isolating valve.
•
Press the "Menu/Info" button (confirm the setting
and move on to the next menu item), or
•
press the "Start/Stop" button (confirm the setting
and close the second function level).
Adjusting the operating counter-pressure
without gauging the dosed volume during
calibration
If you do not gauge the dosed volume, you can
determine the "calibration value" from the following
dosing capacity curves in order to adjust your pump
to the operating counter-pressure.
The curves represent 200 strokes:
•
Dosing medium with a viscosity similar to water
•
Pumps without Plus
3
system.
Fig. 45
Dosing capacity curves
TM
0
3
6
619
4
506
0
50
100
150
200
250
300
350
400
450
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
p [bar]
Vkal [ml]
DDI 20-3
DDI 13,8-4
DDI 5,5-10
DDI 2,5-10
DDI 2,2-16
DDI 0,4-10
p [bar]
V
cal
[ml]
Note
Values are approximate values and do
not take into consideration deviations
due to construction tolerance
according to VDMA 24284.
