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Les langues disponibles
Contact
CONC
L/P
Set
Set
*
IV —
Set
KG/L
Set
Permanent
display
ProMinent
®
IMPORTANT
• Note the decimal point.
• The value of the volume concentration is influenced by changing the stroke rate as well as the
stroke length ±10 %.
NOTE
The final digits of the value in the permanent display cannot be changed using the arrow keys. The
value changes in increments obtained from the input data.
Variable
flow
Tab. 1: Possible values of variables
3
Concentration input in CNTCT operating mode (Contact)
000.0
000.0
Set
Set
100.0
090.0
Set
Set
Contact interval
000.0
000.0
Set
Set
100.0
090.0
Set
Set
Mass concentration
Metering solution
000.
0000.
Set
Set
020.
0009.
Set
Set
Mass density
of metering
solution
Fig. 5: Extract from the SET menu
Fig. 5:
*
The symbol
stands for "%".
The "concentration input" in the CNTCT operating mode is intended for the metering of a product to provide
a specific mass concentration despite a variable flow of medium via tubing.
The necessary conditions are that:
• the flow has the mass density of water (1 kg/L)
• the mass concentration of the metering solution is known (see safety data sheet of the metering solution,
e. g. at 35 % conc. sulphuric acid: 35 %)
• the mass density of the metering solution is known (see safety data sheet of the metering solution, e. g. at
35 % conc. sulphuric acid: 1.26 kg/L ^ = g/cm
• a contact water meter is hydraulically installed and connected to the external intake of the metering pump.
Supplementary Operating Instructions
Lower value
Upper value
1
1000
000.0
000.0
Set
Set
009.0
009.9
Set
Set
000.0
000.0
Set
Set
009.0
009.9
Set
Set
000.0
Set
000.9
Set
3
)
Increment size
1
9
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