4
9.17.052
4.5
Mounting position (integrated) valve with purge connector
Only for
mini CORI-FLOW™
instruments with (integrated) liquid valve with purge adaptor, mounting position
can be critical for a good quality of de-gassing.
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Please consult the Instruction Manual for additional information on mounting the mini CORI-FLOW instruments. This
document can be found in the download section of our website:
coriolis.bronkhorst.com/en/downloads/
instruction_manuals/
Liquid purging
In order to remove gas bubbles during start-up, flushing with relatively high flow rate of liquid for some minutes is
recommended.
Gas purging
In order to remove condensation drops during start-up, flushing with dry gas for some minutes with high flow rate is
recommended.
Leak tightness
Verification of leaks is required prior starting up of the process.
5
Leak check
Check the system for leaks before applying (fluid) pressure. Especially if toxic, explosive or other dangerous fluids
are used!
Gas tight is not the same as liquid tight
Please note that connections which are tight for liquid, could still be untight for gas. This can result in Air enclosure
in the liquid, e.g. when using pumps, which might lead to errors in measurement.
6
Electrical connection
Electrical connections must be made with a standard cable or according to
the
mini CORI-FLOW™
hook-up diagram.
mini CORI-FLOW™
instruments have a IP65 ingress protection rating.
Optional mini CORI-FLOW™
instruments can be ATEX Zone 2 protected. For ATEX Zone 2 applications, all
(optional) connectors and the impact protection cover must be mounted on the instrument.
7.1
Analog/Local operation
Connect the
mini CORI-FLOW™
to the power supply/readout unit with the 8-pin cable at the circular connector.
The two examples below have the following electrical properties:
Power
Analog
output
Analog input
(controller)
: +15...+24 Vdc
: 0...5 Vdc / 0...10 Vdc
0...20 mA / 4...20 mA
: 0...5 Vdc / 0...10 Vdc
0...20 mA / 4...20 mA
Example 1
Example 2
