ProMinent DULCO flex Control Operating Instructions Manual page 52

'Menu'
Set up /
Tab. 9: Possible values of adjustable variables
Adjustable variable
Contact distance in l/contact 000.10
Mass concentration in %
Mass density in kg/l
'Batch' operating mode (settings for the 'Concentration' function)
12.2.3.3
The prerequisites are that:
Procedure
52
Lower value
000.01
0.50
'Menu / Information è Settings è Concentration
Concentration control è Volume main medium è ...'
è
The "Concentration input" in
metering a substance into the medium in a storage tank so that there is
then a defined mass concentration in the storage tank (when batching a
solution – do not forget to stir!).
the medium in the storage tank has the same mass density as water
n
(1 kg/l ≜ g/cm
the mass concentration of the feed chemical is known - see the feed
n
chemical safety data sheet (e.g. with 35% sulfuric acid: 35 %)
the density of the feed chemical is known - see the feed chemical
n
safety data sheet (e.g. with 35% sulfuric acid: 1.26 kg/l ≜ g/cm
The measurement unit for the liquid volume is set in the
n
Volume unit' menu.
è
1. Calibrate the metering pump if it is not yet calibrated - see
'Calibration' chapter.
2. Select
ated menu items with the
ured in other operating modes remain saved).
3. Select
'active' in the 'Concentration control' menu item and press the
4. Set
[Clickwheel] .
5. Set the
and press the
6. Set the (mass)
[Clickwheel] .
7. Set the (mass)
ð The
8. Press
ð A continuous display appears.
9. Turn the
play (ppm or %).
10. You can enter the desired mass concentration using the
[Clickwheel] .
Upper value
999.99
100.00
2.00
'Batch' operating mode is intended for
3 )
CAUTION!
The precision of the concentration is strongly dependent
on:
– the precision of the metering pump calibration.
– the precision of the inputs.
'Batch' - 'Operating mode' and simply confirm the associ‐
[Clickwheel] (settings potentially config‐
'Concentration' in the 'Set up' menu.
'Volume main medium' of the medium in the storage tank
[Clickwheel] .
'Feed chemical concentration' and press the
'Feed chemical density' and press the [Clickwheel] .
'Concentration' menu appears.
[Menu] .
[Clickwheel] to go to the "Concentration" continuous dis‐
Increment
000.01
000.01
0.01
3 )
'System
'Set up' -