Bronkhorst CORI-FILL User Manual
Page 15
9.17.075
Bronkhorst Cori-Tech BV
15
Flow speed:
When using shut-off valves the flow speed needs to be controlled by either the supply pressure or a manual needle valve. In many
cases the supply pressure will only be gravimetric by having a supply vessel at a certain level.
This means this supply pressure will not be very high.
Bronkhorst instrument sizing tool CoriCalc is needed to calculate the pressure drop across the Coriolis instrument. The correct inlet
pressure and consistency will have a positive influence on the batch accuracy.
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CoriCalc is a Coriolis Calculation routine, integrated in Bronkhorst's online software tool "FLUIDAT on the Net"
(free registration for users of Bronkhorst instruments)
It is important that the maximum flow does not exceed 130% of the maximum FS of the instrument. Values above
130% of the full scale value will not be measured. If this is the case, there are a few possibilities to adjust this:
The pressure could be lowered
The flow could be restricted by using a manual valve
If the “measure” line (green) exceeds 130% of the set full scale (e.g. 10 kg/h), but not exceeds the max. full scale (e.g. 30 kg/h), it
won’t have any influence on the counter. Please keep in mind that this specific 130% rule will only work for filling applications
using the up to limit mode (counter).
Green sensor signal ‘clips’ at 130% -> however the counter line (grey) has a constant upward trend.
By increasing the full scale value the measure line will be visible.