User guide

27
6.2 Indirect calibration
A value from the following table is to be added to the
default factory calibration value in the display. To re-
set the pump to the factory calibration value, activate
the “DEFAULT” function, see section 4.17.
To use the values, the following must be fulfilled:
• The viscosity and density of the liquid to be dosed
must not differ considerably from water at 20°C.
• A Grundfos installation kit or corresponding foot
valve, injection valve and hose diameter must be
used.
• The length of the dosing hose must not exceed
6 metres.
• The suction lift must lie between 0.1 and 1.5 me-
tres.
Adding the value:
Fig. 25
Pump type
Values to be added to the calibration value at various counter pressures [bar]
0-1 1-2 2-3 3-4 4-5 5-6 6-8 8-10 10-12 12-14 14-16 16-18
7800-2 1.4 1.1 0.8 0.5 0.2 -0.2 -0.6 -1.2 -1.8 -2.4 -3.0 -3.6
3.52.72.01.20.4-0.4-1.6-3.1----
2.11.30.4-0.4-1.3-2.1-3.4-----
18.312.26.10-6.1-12.2-21.4-----
24.38.3-8.3---------
Operating display
without changes
Operating display
Set value
to table value
+ display value
7800-8
7800-12
7800-19
7800-48