Metering Rate Calculation (Volumetric Measurement) - Ecolab Elados EMP KKS - E10 Notice Technique

7.4

Metering rate calculation (volumetric measurement)

The specified metering capacities in metering pumps are always determined under ideal
conditions (metering of water at 20 °C, short suction and metering pipes, rated back-
pressure, no pressure-boosting valves in the metering line).
As these conditions never occur in practice, you are advised to determine the actual
metering rate of the metering pump under prevailing local conditions
(volumetric measurement).
Fig. 7.2
@ Run the pump for exactly 1 minute and measure the quantity sucked out of the
measuring cylinder.
The value calculated in l multiplied by 60 equals the actual metering rate in l/h.
The volume of the measuring cylinder should be 1/50 of the required metering pump rate
in litres/h.
During volumetric measurement, the position of the suction tube may not be changed.
NOTE
The determined metering rate is only valid for the stroke length currently set.
Once the stroke length setting has been adjusted, the changed metering rate must be
determined anew.
417101338_EMP_KKS_E10
@ Connect pump ready for operation on
delivery side (operation-specific pipe
length incl. all pressure-maintenance
valves, injection valves etc. connected
during normal operation)
@ Set the pump to the required metering
rate (see section
metering capacity (mechanical)").
@ Fill a suitable measuring cylinder with
the product to be metered and insert a
suction pipe.
34
7.3 "Setting the
Rev: 09-08.12