Grundfos SMART Digital DDA, Installation And Operating Instructions Manual

Page: 18 / 44

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sh (
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18
Calibration process - example for DDA 7.5 - 16
1. Fill a measuring beaker with dosing medium.
Recommended filling volumes:
2. Read off and note down the fill volume V
1
(e. g. 300 ml).
3. Place the suction hose in the measuring beaker.
4. Start the calibration process in the ’Setup >
Calibration’ menu.
5. The pump executes 200 dosing strokes and
displays the factory calibration value
(e. g. 125 ml).
6. Remove the suction hose from the measuring
beaker and check the remaining volume V
2
(e. g. 170 ml).
7. From V
1
and V
2
, calculate the actual dosed
volume V
d
= V
1
-V
2
(e. g. 300 ml - 170 ml = 130 ml).
8. Set and apply V
d
in the calibration menu.
– The pump is calibrated.
DDA type 7.5 - 16 12-10 17-7 30-4
Medium V
1
0.3 l 0.5 l 1.0 l 1.5 l
T
M
0
4 1
154
1
1
1
0
V
2
= 170 ml
V
d
= V
1
- V
2
= 130 ml
V
1
= 300 ml
Calibration
Calibration
Strokes
Calibrat. volume
200
STOP
START
0.0 ml
Strokes
Calibrat. volume
200
125 ml
Calibration
Calibrat. volume
STOP
START
ml
Strokes
200
130
Actual dosed volume V
d