BRONKHORST mini CORI-FLOW ML120 User manual

Doc nr.: 9.17.093C Date: 13-05-2016
Quick Installation Guide

9.17.0932
SCOPE OF THIS GUIDE
min i CORI -FLOW™ instruments are highly accurate instruments for measuring and controlling the mass flow rate of liquids and/or
gases, independent of fluid properties. These smart Coriolis instruments offer multiple process values as input- or output
parameters. Many parameters can be read and/or changed using analog or digital interfaces. Output parameters are: mass flow,
density, temperature, totalized mass flow, alarms. Input parameters are: setpoint (desired mass flow rate for controllers), reset
alarm/counter.
This manual will help you start-up your mini CORI-FLOW™ ML120 in only 10 steps and contains:
1. Instrument functional properties
2. Check safety properties
3. Check piping
4. Mount/install instrument
5. Leak check
6. Electrical connection
7. Operation
8. Multi-functional switch
9. Purging
10. Zeroing
mini CORI-FLOW™ ML120 instruments have modular instruction manuals consisting of:
- Instruction manual mini CORI-FLOW™ ML120 (document nr. 9.17.097)
Info about e.g. : sensors, valves, liquid dosing systems, maintenance, tooling, calibration, Kv-value calculation, troubleshooting.
- Hookup diagram mini CORI-FLOW™ and CORI-FLOW™ (general) (document nr. 9.16.132)
- FlowPlot Manual (document nr. 9.17.030)
Depending on optional fieldbus interface:
Fieldbus/interface description Manual Hookup diagram
- RS232 Interface with FLOW-BUS protocol 9.17.027 9.16.132
- FLOW-BUS Interface 9.17.024 9.16.133
- PROFIBUS DP Interface 9.17.025 9.16.134
- DeviceNet™ Interface 9.17.026 9.16.135
- Modbus interface 9.17.035 9.16.136
- EtherCAT interface 9.17.063 9.16.137
- PROFINET 9.17.095 9.16.146
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These docum ents can be downloaded from the website:
http://www.bronkhorst.com/qrcoriolis or can be sent by e-mail on request.
Notes for temperature considerations
After ha ving use d the mini C ORI -F LOW™ ML120 the first time at low temperature tighten the fluid adapter screws again in
order to prevent any leakage! Please note: if you do not tighten, the leaking adapter / fitting can cause damage! After the
first shrinking and tightening of the screws, no further precaution is necessary.
Note: The maximum allowed temperature in the housing of the mini CORI -FLOW™ ML120 is 70 °C. To check this, the
internal temperature sensor can be used. Temperature can be readout digitally via FLOW-DDE/E-8000 (FlowDDE par. 142) or
BRIGHT (local readout/control module). Make sure the temperature value readout here (=actual temperature in housing)
will not exceed 70 °C.
STARTING-UP
1
Check mini CORI-FLOW™ ML120 functional properties
Before installing your Mass Flow Meter/Controller it is important to
read the attached label and check:
·Flow rate
·Fluid to be measured
·Up- and downstream pressures
·Input/output signal
·Temperature
·Valve type (if controller)

© Bronkhorst High-Tech B.V. 3
2
Check test-pressure
The tested pressure is stated on the instrument with a red-colored 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.
NOTE! Tested pressure is higher than the (normal) operating pressure.
Mass Flow Meter
Mass Flow Controller
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: 0,5...25 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™ ML120 Meter/Controller in the line and tighten the fittings according to the
instructions of the supplier of the fittings.
During operation avoid external vibrations and shocks.
4.2
Flow direction
Install the mini CORI-FLOW™ ML120 in accordance with the direction of
the FLOW arrow. The arrow for flow direction is indicated on the
mini CORI-FLOW™ ML120, between process fittings.
4.3
Base mounting
Mount the mini CORI-FLOW™ ML120 instrument, with screws in the body, to a rigid, stiff base body or heavy mass,
such as a wall, heavy rig or stable construction. This is essential to achieve optimal accuracy with the mini CORI-
FLOW™ ML120 instrument.
By default the mini CORI-FLOW™ M12, M13, M14 and ML-120 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 vibration free, stiff
and rugged surface. Mounting on plates of machine cabinets is not recommended.
4.4
Mounting position general
For gas and liquid mini CORI-FLOW™ ML120 meters can be mounted in any position for a proper measurement.

9.17.0934
4.5
Mounting position when using mini CORI-FLOW™ ML120 with external valve with purge connector
For the mini CORI-FLOW™ ML 120 series instruments with external liquid valve with a purge connector, the
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: www.bronkhorst-cori-tech.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 a few seconds 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!
Avoid condensation due to cold liquids/gases at high humidity environments.
Liquid tight is not the same as gas 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 external valves, 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™ ML120 hook-up diagram.
mini CORI-FLOW™ ML120 instruments have a IP40 ingress protection rating.
7.1
Analog/Local operation
Connect the mini CORI-FLOW™ ML120 to the power supply/readout unit with the D9 cable at the Sub D9
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

© Bronkhorst High-Tech B.V. 5
7.2
BUS/digital operation
For this procedure see description
for RS232 operation or specific
(optional) fieldbus.
RS232 connection cable 7.03.366
enables to use (free downloadable)
tooling programs for Windows.
Example 3
Example 4
8
Multi-functional switch operation
Using the 2 colored LEDs and the switch on the mini CORI-FLOW™ ML120,
several actions can be monitored and started. The green • LED is used for
status indication. The red • LED is used for errors/warnings. The switch can be
used to start several actions, such as auto-zero, restore factory settings and bus-
initialization actions. See specific zero-procedure part in this manual or see
'General instructions for mini CORI-FLOW™ ML120' for more details.
Important warning! When red • LED blinks shortly: measuring signal is unstably or noisy: instrument is possibly
exposed to vibrations or pulsating flow.
The micro switch on top of the mini CORI-FLOW™ ML120 can be operated with a thin, metal or hard plastic pin. For
example the end of a paperclip.
9
Purging
In systems for use with corrosive or reactive fluids, purging with an inert gas is absolutely necessary before use. After
use with corrosive or reactive fluids, complete purging is also required before exposing the system to air. Purge the
mini CORI-FLOW™ ML120 with actual fluid to get rid of all the Air/gas in the tubes (for liquids) or to remove all
possible condensation drops (for gases).
Purging during start-up
In order to remove condensation drops during start-up, flushing with dry gas for some minutes with high flow rate
(while tapping the valve) is recommended.
Special control mode for purging
In case of purging of a mini CORI-FLOW™ ML120 controller give setpoint = 100 % to control the valve or the pump.
It is also possible to use special control mode = 8 to fully open the valve or set the pump at max. rpm, using a digital
interface. This will bypass the PID-controller and might be usefull when having the mini CORI-FLOW™ ML120 set
to a low capacity. It will ensure you to get the highest possible flow for purging.
Warm-up time
Let the mini CORI-FLOW™ ML120 warm-up for at least 30 minutes for best accuracy.
10
Zeroing
Before first use, when process conditions change significantly (especially temperature) or when the instrument has
been re-mounted (e.g. after servicing) it is recommended to perform an automatic zero action with the mini CORI-
FLOW™ ML120. This action can be started manually (as described below) or via a digital interface (see document
Operation instructions digital instruments: 9.17.023). Under normal (constant) conditions it will not be necessary to
zero before each application start-up.
10.1
Set process conditions
After warming-up, pressuring and purging the system (including the mini CORI-FLOW™ ML120) prepare the
instrument for actual process conditions.
During zeroing avoid external vibrations and shocks.

10.2
Stop flow
Make sure there is no flow through the mini CORI-FLOW™ ML120 by
closing a shut-off valve in front of the instrument. At least one (shut-off) valve
in front of the mini CORI-FLOW™ ML120 is required. High quality shut-off
valves are recommended for proper zero point calibration.
10.3
Start Auto-Zero
Press micro switch and hold it. After a short time the • red LED will go ON
and OFF, then the • green LED will go ON. At that moment (which is 8...12
seconds after pressing) release the switch.
10.4
Zeroing procedure
The zeroing procedure will start at that moment and the • green LED will
blink fast. The procedure will take approx. 45 seconds.
45 sec.
When the signal is not stable the procedure will take longer (max. 6 retries will be performed). The red • LED will
blink when signal is unstable/noisy.
10.5
Ready
When the indication is showing 0% signal and the • green indication LED is
burning continuously again, then the zeroing action was successful.
Measurement check
For a controller: send a setpoint to the mini CORI-FLOW™ ML120 and check the measured value.
Make sure the mini CORI-FLOW™ ML120 indicates 0% at zero flow.
Your mini CORI-FLOW™ ML120 is now ready for operation.
Bronkhorst High-Tech B.V., Nijverheidsstraat 1a, NL-7261AK Ruurlo The Netherlands
T [phone] F [phone] I www.bronkhorst.com E [e-mail]