© Bronkhorst High-Tech B.V.
3
2
Check test-pressure
The tested pressure is stated on the instrument with a red-coloured sticker.
Before installation, make sure that the test pressure is in accordance with
normal safety factors for your application. If there is no Pressure Testing
Sticker on the device or if the test pressure is incorrect, the instrument
should
not
be mounted in the process line and be returned to the factory.
3
Check if system piping is clean
For reliable measurement always make sure the fluid stream is clean.
Use filters to assure a particle free liquid stream or a moisture- and
oil-free gas stream. Recommended pore size: 10...40 µm. If back flow can
occur, a downstream filter and a check valve are recommended too.
For high flow rates select a suitable filter size, to avoid too high pressure
drop or cavitation.
Warning!
During the manufacturing process, the instruments have been tested with water. Despite the fact that the
instruments have been purged thoroughly afterwards, we cannot guarantee that the delivered instruments are
absolutely free from water droplets. Bronkhorst strongly recommends performing an additional, adequate drying
procedure for those applications where remaining water particles may cause undesired reactions such as corrosion.
4.1
Mount/install instrument properly
Install the
mini CORI-FLOW™
Meter/Controller in the line and tighten the fittings according to the instructions of
the supplier of the fittings. Mount the
mini CORI-FLOW™
instrument, with screws in the body, to a rigid, stiff base
body or heavy mass, such as a wall, heavy rig or stable steel construction. This is essential to achieve optimal
accuracy with the
mini CORI-FLOW™
instrument.
4.2
Flow direction
Install the
mini CORI-FLOW™
in accordance with the direction of
the FLOW arrow. The arrow for flow direction is indicated on the
mini CORI-FLOW™
, between process fittings.
4.3
Base mounting
Mount the
mini CORI-FLOW™
instrument, with screws in the body, to a rigid, stiff base body or heavy mass on a
vibration-free position, such as a wall, heavy rig or stable construction. This is essential to achieve optimal accuracy
with the
mini CORI-FLOW™
instrument.
By default the
mini CORI-FLOW™ M12, M13
and
M14
will be delivered on a special mounting block for achieving
optimal accuracy.This mounting block has a mass and stiffness precisely tuned for the specific model.
Removing the mounting block will cause inaccuracy unless the instrument is firmly mounted on a stiff and rugged
surface.
4.4
Mounting position general
For gas and liquid
mini CORI-FLOW™
meters can be mounted in any position for a proper measurement.
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
