BRONKHORST mini CORI-FLOW ML120 Instruction Manual
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BRONKHORST mini CORI-FLOW ML120 Instruction Manual

(ultra) low flow coriolis mass flow meters / controllers
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Instruction Manual
mini CORI-FLOW ML120
(Ultra) Low Flow
Coriolis Mass Flow Meters / Controllers
Doc. no.: 9.17.097 rev. K
Date: 23-09-2020
ATTENTION
Please read this document carefully before installing and operating the product.
Not following the guidelines could result in personal injury and/or damage to the equipment.

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  • Page 1 Instruction Manual mini CORI-FLOW ML120 (Ultra) Low Flow Coriolis Mass Flow Meters / Controllers Doc. no.: 9.17.097 rev. K Date: 23-09-2020 ATTENTION Please read this document carefully before installing and operating the product. Not following the guidelines could result in personal injury and/or damage to the equipment.
  • Page 2 Check the outside packaging box for damage incurred during shipment. If the box is damaged, the local carrier must be notified at once regarding his liability, if so required. At the same time a report should be submitted to your Bronkhorst representative.
  • Page 3 Bronkhorst® Warranty Bronkhorst® products are warranted against defects in material and workmanship for a period of three years from the date of shipment, provided they are used in accordance with the ordering specifications and not subject to abuse or physical damage.
  • Page 4 Bronkhorst® Instruction Manual mini CORI-FLOW ML120 9.17.097K...

  • Page 5: Table Of Contents

    ......................26 9.17.097K Instruction Manual mini CORI-FLOW ML120...
  • Page 6 ......................65 Instruction Manual mini CORI-FLOW ML120...

  • Page 7: Introduction

    Material Safety Data Sheets of the media to be used in the system (if applicable). Bronkhorst High-Tech B.V. cannot be held liable for any damage resulting from improper or unsafe use, use for other than the intended purpose or use with other media and/or under other conditions than specified on the purchase order.

  • Page 8: Calibration

    Multi-range The mini CORI-FLOW ML120 offers multi-range functionality: factory calibrated ranges can be re-ranged to a different full scale range (e..g. a mini CORI-FLOW model ML120 can be used for full scale ranges between 5 g/h and 200 g/h). The analog output and the digital measured value are scaled accordingly.

  • Page 9: Documentation

    9.16.134 Hook-up diagram PROFINET 9.16.146 Hook-up diagram optional bus and I/O configurations 9.16.131 Dimensional drawing 7.05.925 The documentation listed in the following table can be downloaded from www.bronkhorst.com/downloads Type Document Document no. General documentation EU Declaration of Conformity 9.06.021 Manuals Manual DeviceNet™...

  • Page 10: Model Key

    The specific properties can be retrieved with the diagram below. Customized I/O options mini CORI-FLOW ML120 instruments offer several customized input/output functions through pin 5 of the M12 connector as an option. The required I/O options are factory installed as specified at ordering time, and cannot be changed manually.
  • Page 11 This option switches between the default Control mode and mode ‘Valve Close’ (value 3). When the default Control mode is digital, the default value is 0 (bus/RS-232), when the default Control mode is analog, the default value is 1 (Analog input). 9.17.097K Instruction Manual mini CORI-FLOW ML120...
  • Page 12 Digital input, reset counter The counter resets when pin 5 is connected to 0 Vdc. Example for I1R or I2R hook-up Digital input, reset alarm The alarm resets when pin 5 is connected to 0 Vdc. Instruction Manual mini CORI-FLOW ML120 9.17.097K...

  • Page 13: Starting Up

    Bronkhorst® Starting up Functional properties Before installing your mini CORI-FLOW ML120, check the serial number label on the rear side of the instrument to see if the functional properties match your requirements: · Flow rate · Fluid to be measured ·...

  • Page 14: Mounting

    Bronkhorst recommends using their standard cables. These cables have the right connectors and if loose ends are used, these are marked to prevent wrong connection.

  • Page 15: Communication Interface

    Analog/RS232 An analog and (digital) RS232 interface are always available on mini CORI-FLOW ML120 instruments. A fieldbus interface is optional. · The analog and RS232 interface are made available through a 9-pin D-sub connector on the side of the instrument...

  • Page 16: Digital Rs232 Interface

    DeviceNet™. Keep in mind that the 9-pin D-sub configuration of a Bronkhorst® instrument differs from the 9-pin D-sub configuration of a PC COM-port. Make sure the correct cables are used for hook-up. When in doubt, always check the hook-up diagrams associated with the instruments.

  • Page 17: Flow-Bus

    For all fieldbus systems the mini CORI-FLOW ML120 instruments serve as slaves on the master/slave bus system. There is no mutual communication between slaves, only between master and slave.

  • Page 18: Other Fieldbuses

    For an overview of all possible LED indications, see indications. The micro switch on top of the mini CORI-FLOW ML120 can be operated with a thin, metal or hard plastic pin, e.g. the end of a paperclip. Avoid excessive force when operating the switch.

  • Page 19: 2.11.1 Zeroing Using Micro Switch

    Press the 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 s after pressing) release the switch. 9.17.097K Instruction Manual mini CORI-FLOW ML120...

  • Page 20: 2.11.2 Zeroing Through Digital Communication

    When applying pressure, avoid pressure shocks and bring the fluid system gradually up to the level of the specified operating conditions; open the fluid supply gently. Make sure (in case of a controller) that the used control valve can withstand the system pressure and the maximum delta pressure allowed. Instruction Manual mini CORI-FLOW ML120 9.17.097K...

  • Page 21: Operation

    Mass flow measurement and control After correct installation of the mini CORI-FLOW ML120 Mass Flow Meter (MFM) or Mass Flow Controller (MFC), and when all safety precautions have been taken into account, the instrument can be used for measuring/ controlling the required flow rate in the system by means of the selected communication interface(s).

  • Page 22: Valve Safe State

    · To prevent damage to the electronics, make sure the temperature in the housing never exceeds 70°C. To monitor this, the internal temperature reading can be used (parameter Temperature). · The storage temperature should lie between -30 and 80 °C. Make sure the measuring tube is purged and dry before storing the instrument. Instruction Manual mini CORI-FLOW ML120 9.17.097K...

  • Page 23: Analog Operation

    Basic RS232 operation Connecting the instrument with an RS232 cable or an RS232 cable with a USB to RS232 converter to a Windows computer enables using the free Bronkhorst® software for Windows, such as FlowDDE and FlowPlot. 9.17.097K Instruction Manual mini CORI-FLOW ML120...

  • Page 24: Flowdde

    3.4.1 FlowDDE Digital Bronkhorst® instruments can be operated via RS-232 using the Bronkhorst® FlowDDE server application. Dynamic Data Exchange (DDE) provides a basic level of inter process communication between Windows applications. Together with a client application, either self-made or with a third party SCADA program, it is possible to create an easy way of data exchange between the flow meter/controller and a Windows application.

  • Page 25: Software (Dde Applications)

    DDE are for example MS-Office, LabVIEW, InTouch and Wizcon. Bronkhorst® software applications 'FlowView' (left) and 'FlowPlot' (right) FlowDDE and other Bronkhorst® applications are available on the support CD or can be downloaded from the product pages on the Bronkhorst website: www.bronkhorst.com/products 3.4.3...

  • Page 26: Basic Rs485 Operation (Flow-Bus/Modbus)

    Baud rate, node address and parity mini CORI-FLOW ML120 instruments are configured ex factory. If there is a need of changing any of the specified RS485 settings, see the tables below for the supported configurations. The default selections are printed in boldface.

  • Page 27: Other Fieldbus Configurations

    DeviceNet™ EtherCAT® PROFINET Baud rate: Autodetect 125000 100000000 100000000 (9600) 250000 (19200) 500000 (45450) (93750) (187500) (500000) (1500000) (3000000) (6000000) (12000000) Node address: 0…126 0...63 0 (n/a) 0 (n/a) Parity: Even None None None 9.17.097K Instruction Manual mini CORI-FLOW ML120...

  • Page 28: Led Indications

    Changing EtherCAT® Second Address EtherCAT® supports the use of a Second Address. Bronkhorst® instruments have 3 rotary switches, with which a Second Address can be set in the range of 0 – 4095 (0xFFF). This value of the rotary switches will be copied to the Configured Station Alias register (address 0x0012:0x0013) at instrument start-up.

  • Page 29: Multifunctional Switch

    9.17.095, for more information. Multifunctional switch 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. Some special functions of the instrument can be started manually using the multifunctional switch near the indication LEDs.

  • Page 30: Normal Operating Functions

    · In configuration mode, the green LED blinks (2 seconds on, 0.1 second off) · Configuration mode remains active after powering-down and can be deactivated by selecting this function again at the next start-up Instruction Manual mini CORI-FLOW ML120 9.17.097K...

  • Page 31: Control Mode - Readout/Change

    • • number of flashes indicates the units of the node address • • Green and red number of flashes indicates the baud rate (simultaneous) 9.17.097K Instruction Manual mini CORI-FLOW ML120...
  • Page 32 If the switch is not pressed within 60 seconds after starting a step, all changes in the previous steps are cancelled and the instrument returns to its normal operation mode. Instruction Manual mini CORI-FLOW ML120 9.17.097K...

  • Page 33: Digital Parameters

    Each communication protocol uses its own methods for communicating with instruments and accessing parameters. FLOW-BUS Digital Bronkhorst® instruments can be monitored and operated via RS-232 using the free FlowWare software tools for Windows. These tools provide a graphical interface to the ProPar protocol (used by FLOW-BUS), for monitoring and changing instrument parameters.

  • Page 34: General

    EtherCAT® system, including communication and network configuration, and all available operating parameters with their data types. An ESI file for Bronkhorst® instruments can be downloaded from the product pages on the Bronkhorst website: www.bronkhorst.com/products General This section describes the most commonly used parameters for digital operation of the mini CORI-FLOW.

  • Page 35: Device Identification

    BHT Model Number Type Access Range FlowDDE FLOW-BUS Modbus Unsigned char[35] RW  113/2 0xF110…0xF117/ 61713…61720 This parameter shows the Bronkhorst® instrument model type information. Firmware Version Type Access Range FlowDDE FLOW-BUS Modbus Unsigned char[6] 113/5 0xF128…0xF12A/ 61737…61739 Revision number of the firmware...

  • Page 36: Measurement And Control

    Floating point variant of Measure. Fmeasure shows the measured value in the capacity unit for which the instrument is set. The instrument uses parameters Capacity, Capacity 0%, Capacity Unit and Sensor Type to calculate Fmeasure. Instruction Manual mini CORI-FLOW ML120 9.17.097K...
  • Page 37 The following sensor types are supported: Instrument type Value Description Controller Pressure (counter disabled) Liquid volume Liquid /gas mass Gas volume Other (counter disabled) Sensor Pressure (counter disabled) Liquid volume Liquid/gas mass Gas volume Other (counter disabled) 9.17.097K Instruction Manual mini CORI-FLOW ML120...

  • Page 38: Alarms

    Bronkhorst® Alarms Alarm settings are most easily accessible using FlowPlot or FlowView or a Bronkhorst® readout and control unit. The built-in alarm functionality can be used to handle different alarm types: · system errors and warnings · min/max alarms · response alarms ·...

  • Page 39: Counter

    Description Multifunctional switch Externally (deprecated) By parameter Reset Automatically (when alarm conditions no longer apply) Counter Counter settings are most easily accessible using FlowPlot or FlowView or a Bronkhorst® readout and control unit. Counter Mode Type Access Range FlowDDE FLOW-BUS...
  • Page 40 Change setpoint to Counter new setpoint Counter New Setpoint Type Access Range FlowDDE FLOW-BUS Modbus Unsigned int 0…32000 104/6 0x0D06/3335 New (safe) setpoint when a counter limit is reached until reset. Range 0…32000 represents 0…100% setpoint. Default value: 0 Instruction Manual mini CORI-FLOW ML120 9.17.097K...

  • Page 41: Network Configuration

    Fieldbus 1 Address Type Access Range FlowDDE FLOW-BUS Modbus Unsigned char RW  0…255 125/10 0x0FAA/4011 Fieldbus 1 Baud Rate Type Access Range FlowDDE FLOW-BUS Modbus Unsigned long RW  0…1.0E10 125/9 0xFD48…0xFD49/64841…64842 9.17.097K Instruction Manual mini CORI-FLOW ML120...

  • Page 42: Special Parameters

    Init Reset is used to unlock secured parameters (marked with a  symbol) for writing. It supports the following values: Value Description unlocked, secured parameters can be read and written to locked, secured parameters are read-only At power-up, Init Reset is always set to ‘Locked’ (value 82). Instruction Manual mini CORI-FLOW ML120 9.17.097K...
  • Page 43 Analog Input RS232 Controlling, safe state deactivated Fieldbus/RS-232 Valve Steering Controller disabled, setpoint redirected to Valve output Analog Valve Controller disabled, analog input redirected to Valve output 9.17.097K Instruction Manual mini CORI-FLOW ML120...

  • Page 44: Default Control Mode

    Note that the selected value is equal to the fluid number minus 1 (value 0 corresponds to fluid 1, value 1 to fluid 2, etc.) Fluid Name Type Access Range FlowDDE FLOW-BUS Modbus Unsigned char[10] RW  1/17 0x8188…0x818C/33161…33165 This parameter contains the name of the current fluid. Instruction Manual mini CORI-FLOW ML120 9.17.097K...

  • Page 45: Advanced Fluid Set Parameters

    Note that the parameters described in this section do not contain any actual measurement values, but only fixed reference values, which can be used for capacity calculations, etc. Inlet Pressure Type Access Range FlowDDE FLOW-BUS Modbus Float RW  0…3.4E+38 113/13 0xF168…0xF169/61801…61802 Inlet pressure of the current fluid in bar(a) 9.17.097K Instruction Manual mini CORI-FLOW ML120...

  • Page 46: Master/Slave Configuration (Flow-Bus)

    The FLOW-BUS system does not have a protection mechanism. Master Node Type Access Range FlowDDE FLOW-BUS Modbus Unsigned char 1…128 33/14 Set the master node for the instrument Note that this parameter only is effective in a FLOW-BUS system via RS-485. Instruction Manual mini CORI-FLOW ML120 9.17.097K...

  • Page 47: Controller

    0.2…5 114/30 0xF2F0…0xF2F1/62193…62194 This parameter sets the overall controller speed factor for the selected fluid set. Controller speed is set ex factory between value '0.5' (slow) and '2' (fast). The default value is '1'. 9.17.097K Instruction Manual mini CORI-FLOW ML120...
  • Page 48 Stable situation response, applied when the controller is stable (within a 2% band around the setpoint). · Default value: 128 (no correction) · Other values adjust the controller gain (correction signal) as follows: Controller gain = Controller Speed * PID-Kp * (response factor - 128) 1.05 Instruction Manual mini CORI-FLOW ML120 9.17.097K...

  • Page 49: Batch Dosing With Cori-Fill

    This automatic self-learning function optimizes the size of each new batch, based on the previously delivered one, until the overshoot is eliminated (typically after 3 batches, assuming the inlet pressure is stable). 9.17.097K Instruction Manual mini CORI-FLOW ML120...

  • Page 50: Estimated Dosing Time

    Extensive information about the installation and usage of FlowPlot can be found in the FlowPlot manual (document 9.17.030), which can be downloaded from www.bronkhorst.com/downloads. · If the 9-pin D-sub connector is set for RS-485 communication, the instrument will not respond when connected to an RS-232 configuration.

  • Page 51: Dosing Method

    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.

  • Page 52: Batch Settings

    · Start the first batch by changing the setpoint to 100% · Wait until the configured counter limit is reached (red indicator in the bottom of the Counter group) · Click Reset counter to start a new batch Instruction Manual mini CORI-FLOW ML120 9.17.097K...

  • Page 53: Overrun Correction

    Purpose/Remarks Parameter register no Counter Controller 104/10 59473… prevent batch size overshoot Overrun Correction (274) 59474 · higher value: faster correction, less dosing cycles needed · lower value: slower correction, more dosing cycles needed 9.17.097K Instruction Manual mini CORI-FLOW ML120...

  • Page 54: Disabling Filters

    The value of Capacity Minimum (247) can only be changed after enabling edit mode for secured parameters with parameter Init Reset (7). To set the minimum capacity, enter the required information as shown in the image below (the value of Capacity Minimum is illustrative, use the value you need). Instruction Manual mini CORI-FLOW ML120 9.17.097K...

  • Page 55: Proportional Control Settings

    62754 Capacity Minimum (247) 1/27 33241… as required typical value (for mini CORI-FLOW ML120): 5 g/h 33242 5.3.5 Proportional control settings Adjusting flow range A proportional control valve enables re-scaling of the controllable flow range, making it possible to dose with a lower flow.
  • Page 56 (temporarily) disabling the counter(Counter mode = Off; see Batch settings) · If necessary, the PID dials can be re-scaled by clicking on a scale value and entering a new value. Instruction Manual mini CORI-FLOW ML120 9.17.097K...

  • Page 57: On/Off Control Settings

    (hold signal). Once it is open, the signal can safely be set to a lower point, reducing power dissipation by the valve coil (thereby minimizing temperature rise). On/off control without hold signal On/off control with hold signal 9.17.097K Instruction Manual mini CORI-FLOW ML120...

  • Page 58: Optimizing Hints

    Zero point drifted Adjust zero point (see Zeroing) Gas inclusion in tubing Flush instrument and tubing at relatively high flow rate before starting batch control Leakage Check system for leaks Instruction Manual mini CORI-FLOW ML120 9.17.097K...
  • Page 59 Restrict flow e.g. with needle valve or by using tubing with smaller diameter Full scale capacity too low Rescale controllable flow range (see Proportional control settings)* Controller settings not optimized Decrease PID-Kp value (see Proportional control settings)* *) Proportional control only 9.17.097K Instruction Manual mini CORI-FLOW ML120...

  • Page 60: Troubleshooting And Service

    Multifunctional switch) · with the restore function of a Bronkhorst® readout and control unit (BRIGHT, E-8000) · via RS232 communication, with the Restore settings function in FlowPlot Changes made to the network settings (bus address, baud rate, parity) will not be restored by a factory reset.
  • Page 61 (e.g. adapters, tubing, valves) Continuous maximum measured Inlet pressure too high Check inlet pressure value or output signal Control valve (normally open) Return equipment to factory failure Sensor failure Return equipment to factory 9.17.097K Instruction Manual mini CORI-FLOW ML120...
  • Page 62 Bronkhorst® Symptom Possible cause Action Flow rate decreases gradually Condensation on measuring tube Increase media temperature to above ambient (might occur with NH and some conditions hydrocarbons, such as C Instruction Manual mini CORI-FLOW ML120 9.17.097K...

  • Page 63: Service

    Bronkhorst® Service For current information about Bronkhorst® and service addresses, please visit our website:  www.bronkhorst.com Do you have any questions about our products? Our Sales Department will gladly assist you selecting the right product for your application. Contact sales by e-mail: ›...

  • Page 64: Returns

    All Bronkhorst® products covered by the WEEE directive (the majority) carry an image of a crossed-out waste bin (usually on the serial number label). If you wish to dispose of Bronkhorst® equipment bearing this...

  • Page 65: Parameter Index

    User Tag Parameters - Fluid set Capacity Capacity Unit Capacity Unit Type Pressure Capacity Unit Type Temperature Fluid Name Fluid Set Index Parameters - Fluid set (advanced) Density Fluid Temperature Inlet Pressure Outlet Pressure 9.17.097K Instruction Manual mini CORI-FLOW ML120...

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