Bronkhorst®
Instruction Manual mini CORI-FLOW ML120
9.17.097G
51
If the 9-pin D-sub (side) connector of the instrument is configured for RS485 communication (FLOW-BUS/Modbus), it will
not respond when connected to an RS232 configuration. In that case, use the power-up functionality of the
to switch to configuration mode and enable RS232 communication.
After configuring the required parameters, remember to return the instrument to the original communication mode.
5.3.1
Dosing method
With
CORI-FILL™
, batch dosing can be done based on mass
or volume flow. By choosing the required unit type, the
batch counter is automatically configured to use similar
units.
In FlowPlot, the fluid settings for determining the dosing
method are located on the
Basic
tab of the
Instrument Settings
function (see image to the right).
For volume flow based dosing, the instrument needs the
fluid density to calculate the volume and batch size from the
mass flow measured by the instrument. The instrument
supports different types of volume measurement.
Depending on the specific type selected, the actual
(measured by the instrument) or theoretical fluid density is
used.
For liquid dosing, FlowPlot supports Mass Flow and Volume
Flow; for gas, Mass Flow, Normal Volume Flow or Standard
Volume Flow can be selected.
With
Mass Flow
, the instrument does not need extra
information to calculate the batch size:
When
Volume Flow
,
Normal Volume Flow
or
Standard
Volume Flow
is selected, the instrument needs the
theoretical fluid density to calculate the batch volume.
Because Normal Volume Flow and Standard Volume Flow
are typical gas flow units, for these unit types the fluid
density at normal (0 °C, 1 atm) or standard conditions (20 °C,
1 atm) respectively is needed.
With
Actual Volume Flow
, the actual fluid density, measured
by the instrument, is used to calculate the batch volume:
Because the mini CORI-FLOW ML120 measures mass flow, this is also the preferred dosing method. For volume based
capacity units, the fluid density is needed to calculate the batch size (see the descriptions below), which is less accurate (and
slower) than using the measured mass flow directly.