Burkert 8742 Operating Instructions Manual
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Burkert 8742 Operating Instructions Manual

Mass flow meter / mass flow controller
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Type 8742
Mass flow meter / Mass flow controller
Operating Instructions

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  • Page 1 Type 8742 Mass flow meter / Mass flow controller Operating Instructions...
  • Page 2 We reserve the right to make technical changes without notice. © Bürkert SAS, 2020 - 2024 Operating Instructions 2402/03 00573731 / Original EN...

  • Page 3: Table Of Contents

    Type 8742 Table of contents TABLE OF CONTENTS 1 About this document.......................... 6 Manufacturer............................. 6 Symbols ............................ 6 Terms and abbreviations ........................ 7 2 Safety ................................ 8 Intended use ............................. 8 Safety instructions .......................... 8 3 Product description .......................... 11 Product overview .......................... 11 Product identification ........................ 13 3.2.1 Type label .......................... 13 3.2.2...
  • Page 4 Type 8742 Table of contents 5.2.6 Tri-clamp connections ....................... 28 6 Electrical connection.......................... 29 Additional documentation ....................... 29 Wire the variant büS /CANopen...................... 29 6.2.1 With büS extension cables from Bürkert ................ 29 6.2.2 With büS cables from Bürkert.................... 29 6.2.3 With CANopen cables...................... 30 Wire the variant Analogue ....................... 31 6.3.1...
  • Page 5 Type 8742 Table of contents Replace the memory card....................... 51 10 Troubleshooting ............................ 53 10.1 Status indicator is red ........................ 53 10.2 Status indicator is orange ....................... 55 10.3 Status indicator is yellow ........................ 57 10.4 Status indicator is blue ........................ 60 10.5 Status indicator is off ........................ 60 10.6 Status indicator goes out periodically..................... 60...

  • Page 6: About This Document

    Before starting any work on the product, read and observe the respective sections of the document. Keep the document available for reference and give it to the next user. Contact the Bürkert sales office for any questions. Further information concerning the product at country.burkert.com. Manufacturer Bürkert SAS...

  • Page 7: Terms And Abbreviations

    Type 8742 About this document Terms and abbreviations The terms and abbreviations are used in this document to refer to following definitions. Device Type 8742 Mass flow meter Mass flow controller büS Bürkert system bus, a communication bus developed by Bürkert and based on the...

  • Page 8: Safety

    Type 8742 Safety SAFETY Intended use The device MFM is designed to measure the mass flow rate of clean and dry gases. The device MFC is designed to measure and regulate the mass flow rate of clean and dry gases.
  • Page 9 Type 8742 Safety Electrostatically sensitive components and assemblies The device contains electronic components that are susceptible to the effects of electrostatic discharging (ESD). Components that come into contact with electrostatically charged persons or objects are at risk. In the worst case scenario, these components will be destroyed immediately or fail after start-up.
  • Page 10 Type 8742 Safety Only feed media into the media ports that are listed in the chapter Technical data [} 18]. Observe the safety data sheet for the media used. Only use authorised devices in a potentially explosive atmosphere There are variants for this device type that may be used in Ex areas. These variants are identified by a sep- arate Ex type label.

  • Page 11: Product Description

    Type 8742 Product description PRODUCT DESCRIPTION The device is used for ultimate precision in the feedback control of medium. This document describes following variant: MFM Analogue MFM büS/CANopen MFM Industrial Ethernet MFM Profibus MFC Analogue with proportional valve MFC büS/CANopen with proportional valve...
  • Page 12 Type 8742 Product description MFM büS/ CANopen 1. Status indicator 2. Flow direction marking 3. Base block 4. Medium connection 5. Functional earth connection 6. Slot for memory card 7. Electrical connection Example of a variant MFM MFC Analogue, Industrial Ethernet, Profibus 1.

  • Page 13: Product Identification

    7. Slot for memory card 8. Electrical connection Example of a variant MFC Product identification 3.2.1 Type label Fig. 1: Example of type label Type 8742 1 Type 2 Operating voltage 3 Power consumption 4 Note: Observe the operating instructions 5 Bürkert internal version...

  • Page 14: Calibration Label

    Type 8742 Product description 3.2.2 Calibration label Mass Flow Controller Medium 1 Medium 2 P1: 1,00 barg P1: 1,00 barg Mounting: horizontal upright Id: 00****** QC passed: __ . __ . ____ Fig. 2: Example of calibration label 1 Variant 2 Calibration medium...

  • Page 15: Namur Mode

    Type 8742 Product description If diagnostics are active, then the status indicator shows whether diagnostics events have been generated or not. If several diagnostics events have been generated, then the status indicator shows the diagnostics event with the highest priority.

  • Page 16: Communication Indicator

    Type 8742 Product description 3.3.4 Communication indicator Industrial Ethernet variant This LED shows the status of the communication between the device and the PLC (Programmable Logical Controller). LED indicator Description Meaning Green Connection to the PLC is active. ERROR Connection to the PLC is inactive.

  • Page 17: Memory Card

    To get a list of the stored data, refer to the file Device Description File that can be downloaded from country.burkert.com. If the inserted memory card is empty, then the device loads its own data on the memory card. A new memory card is empty.

  • Page 18: Technical Data

    Type 8742 Technical data TECHNICAL DATA Standards and directives The device complies with the valid EU harmonisation legislation. In addition, the device also complies with the requirements of the laws of the United Kingdom. The harmonised standards that have been applied for the conformity assessment procedure are listed in the current version of the EU Declaration of Conformity/UK Declaration of Conformity.

  • Page 19: Medium Data

    Type 8742 Technical data Medium data Calibration medium Operating fluid or air Mass flow rate range (reference to 0.025…160 l /min (if measurement range 1:50) N2 (l /min)) 0.01…160 l /min (if measurement range 1:20) Measurement accuracy, after 1 ±0.8%* of the measured value minute warm-up time ±0.3%* of the full scale...
  • Page 20 Type 8742 Technical data Analogue input for the measured Minimum input impedance: 20 kΩ value Resolution: 2,5 mV 0...5/10 V Analogue output for the measured Maximum loop impedance: 600 Ω at an operating voltage of 24 V value DC (200  Ω at an operating voltage of 15 V DC) 0/4...20 mA...
  • Page 21 Type 8742 Technical data Electrical connections M12 plug 5-pin A-coding Minimum temperature rating of the 75 °C cable to be connected to the field wiring terminals: MFM PROFIBUS Operating voltage 24 V DC ±10 % Power consumption < 2 W Communication interface PROFIBUS-DP-V1 Electrical connections...
  • Page 22 Type 8742 Technical data Maximum ratings 1 A, 30 V, 30 VA Electrical connections M12 plug 5-pin A-coding M12 socket 5-pin A-coding service büS interface Minimum temperature rating of the 75 °C cable to be connected to the field wiring terminals: MFC Industrial Ethernet Operating voltage 24 V DC ±10 %...

  • Page 23: Communication

    Type 8742 Technical data Minimum temperature rating of the 75 °C cable to be connected to the field wiring terminals: Communication 4.5.1 Industrial Ethernet: EtherCAT Ethernet interface X1, X2 X1: EtherCAT IN X2: EtherCAT OUT Acyclic communication (CoE) Type Complex Slave FMMUs Sync Managers Transmission speed 100 Mbit/s...

  • Page 24: Industrial Ethernet: Modbus Tcp

    Type 8742 Technical data 4.5.3 Industrial Ethernet: Modbus TCP Modbus function codes 1, 2, 3, 4, 16 Transmission speed 10 and 100 Mbit/s Data transport layer Ethernet II, IEEE 802.3 4.5.4 Industrial Ethernet: PROFINET IO Topology recognition LLDP, SNMP V1, MIB2, Physical Device...

  • Page 25: Medium Connection

    Type 8742 Medium connection MEDIUM CONNECTION Risk of injury or material damage when working on the device or system. Read and observe the chapter Safety [} 8] before working on the device or system. Possible medium connections G-internal-threaded connections according to DIN ISO228/1 NPT-internal-threaded connections according to ASME/ ANSI B 1.20.1...

  • Page 26: Npt-Internal-Threaded Connections

    Type 8742 Medium connection Fig. 6: Pipe cut and deburred Remove the protective cap that closes the threaded connection. ferule Fig. 7: Nut and ferrule on the pipe Slide the nut [A] and then the ferrule onto the pipe. Place the seal [C] on the medium connection.

  • Page 27: Flange Connections

    Type 8742 Medium connection Cut the pipe squarely [1] and deburr [2]. Fig. 10: Pipe cut and deburred Remove the protective cap that closes the threaded connection. Slide the nut and then the ferrule onto the pipe. Connect the medium on one side of the device.

  • Page 28: Connections With External-Threaded Compression Fittings

    Type 8742 Medium connection 5.2.5 Connections with external-threaded compression fittings Do the medium connection on one side of the device. Obey the instructions that are given by the manufacturer of the fitting used. CAUTION! To avoid damage on the sealing of the medium connection, please make sure to lock the hexagonal part in place with a second wrench.

  • Page 29: Electrical Connection

    Additional documentation For more information on büS, read the cabling guide that is available at country.burkert.com. For more information on CANopen that is related to the device, refer to the Operating Instructions "CAN- open Network configuration"...

  • Page 30: With Canopen Cables

    Type 8742 Electrical connection Colour of the büS cable conductor Signal 24 V DC black white CAN_H blue CAN_L Tab. 4: Signals of the büS cable conductors NOTICE! If an own mating female connector is used, then observe the following requirements for the correct op- eration of the device.

  • Page 31: Wire The Variant Analogue

    Type 8742 Electrical connection NOTICE! Requirements for the correct operation of the device. Use a mating female connector with shield connection. Observe the specifications for the cable and conductors, that are given by the manufacturer of the mat- ing female connector.
  • Page 32 Type 8742 Electrical connection NOTICE! UL approved versions must be supplied in one of the following ways: "Limited Energy Circuit" (LEC), according to UL / IEC61010-1 "Limited Power Source" (LPS), according to UL / IEC60950 SELV / PELV with UL-approved overcurrent protection, designed according to UL / IEC61010-1, Table 18 (e.g.

  • Page 33: Digital Input

    Type 8742 Electrical connection 5-pin M12 male connector Assignment GND for the analogue output and the set-point input 24 V Set-point input Analogue output for the measured value M12 thread is internally con- Coding lug nected to FE Tab. 9: Pin assignment, 5-pin M12 male connector (A coding) Connect the cable shielding to the mating female connector.

  • Page 34: Relay Output

    Type 8742 Electrical connection Device Default assignment Start autotune Tab. 11: Default assignment of the digital input To choose the function to be remotely triggered over the digital input, use the Bürkert Communicator software. Only one of the available functions can be associated to the digital input.

  • Page 35: Wire The Variant Industrial Ethernet

    Type 8742 Electrical connection Device Default assignment The set-point value cannot be reached Tab. 13: Default assignment of the relay output To choose the events that are assigned to the relay output, use the Bürkert Communicator software. Several events can be associated to the relay output.

  • Page 36: Change The Network Parameters

    Type 8742 Electrical connection 4-pin M8 female connector (D Assignment coding) Tx + Rx + Tx − Rx − Coding lug M8 thread is internally connec- ted to FE Tab. 15: Pin assignment, 4-pin M8 If a protocol other than EtherCAT is used, plug an Ethernet cable in one or both sockets.

  • Page 37: Over The Bürkert Communicator Software

    Type 8742 Electrical connection Open the web browser. In the address bar of the web browser, enter 192.168.1.100. The home page of the web server opens. Some device data are shown. Open a web server session, to configure the network parameters of the device.
  • Page 38 Type 8742 Electrical connection NOTICE! UL approved versions must be supplied in one of the following ways: "Limited Energy Circuit" (LEC), according to UL / IEC61010-1 "Limited Power Source" (LPS), according to UL / IEC60950 SELV / PELV with UL-approved overcurrent protection, designed according to UL / IEC61010-1, Table 18 (e.g.

  • Page 39: Change The Profibus Network Parameters

    Type 8742 Electrical connection Change the Profibus network parameters PROFIBUS variant All the variants Profibus have the same default Profibus adress 126. Before commissioning the device, change its network parameters. If several devices must be connected to the same Profibus network, then connect one device at a time and change its network parameters.

  • Page 40: Commissioning

    Type 8742 Commissioning COMMISSIONING Risk of injury or material damage when working on the device or system. Read and observe the chapter Safety [} 8] before working on the device or system. Commissioning procedure Pressurise the pipes with medium. Flush the pipes with medium at the calibration pressure.

  • Page 41: Configuration With Bürkert Communicator

    PROFIBUS variant Use the USB-büS-Interface set with article number 00772551. Download the latest version of the Type 8920 Bürkert Communicator from country.burkert.com. Install the Bürkert Communicator on a PC. During installation, the büS stick must not be inserted at the Assemble the parts of the USB-büS-Interface set.

  • Page 42: Setting The Industrial Ethernet Address

    / CANopen variant Use the USB-büS-Interface set with article number 00772426. Download the latest version of the Type 8920 Bürkert Communicator from country.burkert.com. Install the Bürkert Communicator on a PC. During installation, the büS stick must not be inserted at the Insert the micro-USB plug into the büS stick.

  • Page 43: Functions

    Type 8742 Configuration with Bürkert Communicator Functions 8.4.1 Shut-off threshold Only MFC variant A shut-off threshold ensures the sealing function of the control valve (except valve with PCTFE seat seal- ing). If the Used set-point value is below the shut-off threshold (Controller >...

  • Page 44: User-Defined Adjustment

    Type 8742 Configuration with Bürkert Communicator Browse the downloaded zip-File. The procedure of changing medium starts. User-defined adjustment At delivery the device is calibrated by the manufacturer. With the Bürkert Communicator, it is possible to define an adjustment procedure with up to 32 calibration points.

  • Page 45: Operation Modes

    Type 8742 Configuration with Bürkert Communicator Set-point value source Description Operation mode Automatic The set-point value is set via the Normal operation mode (Closed- fieldbus. If different fieldbus parti- loop) Only variant Industrial Ethernet cipants simultaneously specify a set-point value for the device, it is always the last set value that is used.

  • Page 46: Normal Operation Mode

    Type 8742 Configuration with Bürkert Communicator Operating mode Refer to Manual set-point value Choose the source that gives the set-point value [} 48] Stored set-point value Choose the source that gives the set-point value [} 48] Open-loop control mode Choose the source that gives the set-point value [} 48] Analyze system Choose the source that gives the set-point value [} 48]...

  • Page 47: Analogue Variant

    Type 8742 Configuration with Bürkert Communicator To change the operation mode, change the source for the set-point value. Refer to Choose the source that gives the set-point value [} 48] 8.10.1 Analogue variant After applying the operating voltage, the device enters a short initialisation phase and then switches to the normal operation mode.

  • Page 48: Choose The Source That Gives The Set-Point Value

    Download the initiation files and the related documentation at country.burkert.com. On a Industrial Ethernet variant it is possible to alternatively change the related object. Refer to the related procedure in the device-specific help in the documentation of the initiation files.

  • Page 49: Set-Point Values Without Communication

    Type 8742 Configuration with Bürkert Communicator Open-loop control mode: to directly set the set-point position (y) to the actuator. The value that is given in the menu Actuator > Parameter > Actuating variable is the setpoint position (y) that is used. A restart of the device sets the set-point position (y) to zero.

  • Page 50: Maintenance

    Type 8742 Maintenance MAINTENANCE If the device is operated according to the Operating instructions, then the device is maintenance-free. Risk of injury or material damage when working on the device or system. Read and observe the chapter Safety [} 8] before working on the device or system.

  • Page 51: Replace The Memory Card

    Type 8742 Maintenance Send the device back to the manufacturer because it must be replaced and recalibrated. Observe the re- turn procedure given in Return [} 69] Replace the memory card Analogue variant Industrial Ethernet variant PROFIBUS variant De-energise the device.
  • Page 52 Troubleshooting [} 53] büS / CANopen variant The büS/CANopen variant supports the config-client if no memory card is used. For detailed information, refer to the Operating Instructions "Central configuration management of Bürkert devices" that can be downloaded from country.burkert.com.

  • Page 53: Troubleshooting

    Type 8742 Troubleshooting TROUBLESHOOTING 10.1 Status indicator is red MFM Analogue Cause Solution The supply voltage is out of the error Operate the device within the specifications. If the status in- range. The device can be damaged. dicator is still red, then send the device back to Bürkert.
  • Page 54 Type 8742 Troubleshooting Cause Solution The device is connected to büS, but does Make sure that the process value is correctly allocated. not find the process value to be pro- Check the assigned büS participant that is defective. cessed. Make sure that the assigned büS participant provides the cyclic data.

  • Page 55: Status Indicator Is Orange

    Type 8742 Troubleshooting Cause Solution Incorrect Autotune or Autotune aborted. Make sure that the medium flows through the device. Check the Q of the device. Start the Autotune again. After a restart of the device, the error will be reset.
  • Page 56 Type 8742 Troubleshooting MFM PROFIBUS Cause Solution A calibration procedure is in progress. Wait until the calibration procedure is completed. MFM büS/ CANopen Cause Solution The device is connected to büS and Wait until the device has found assigned fieldbus parti- searches assigned fieldbus participant.

  • Page 57: Status Indicator Is Yellow

    Type 8742 Troubleshooting MFC büS/CANopen Cause Solution The device is connected to büS and Wait until the device has found assigned fieldbus parti- searches assigned fieldbus participant. cipants. The device is connected to büS and is Wait up to one minute until the device assigns its address.
  • Page 58 Type 8742 Troubleshooting MFM PROFIBUS Cause Solution One of the following values is out of spe- Operate the device within the specifications. If the status in- cification. The sensor or the device can dicator is still yellow, then send the device back to Bürkert.
  • Page 59 Type 8742 Troubleshooting Cause Solution A change of the Ethernet protocol is in Wait until the change of protocol is completed. It can take progress. up to 1 minute. The set-point position for the actuator Increase the inlet pressure or decrease the outlet pressure.

  • Page 60: Status Indicator Is Blue

    Type 8742 Troubleshooting 10.4 Status indicator is blue Cause Solution Error in the internal memory. Contact the manufacturer, because maintenance is needed. 10.5 Status indicator is off Cause Solution The device is not energised. Make sure that the device is correctly wired.

  • Page 61: No Mass Flow Rate

    Type 8742 Troubleshooting 10.9 No mass flow rate Cause Solution The pipes are too large or not yet fully Vent the pipes. vented. Change the pipe diameter. The flow-rate value is below the cut-off If the cut-off limit is too high, decrease the value of the cut- limit.

  • Page 62: Set-Point Value At 0 %, But Medium Still Flows

    Type 8742 Troubleshooting Cause Solution The residual ripple on the voltage supply Use a supply voltage that conforms to the technical data is too high. given in Technical data [} 18] The device must compensate for irregu- Install a suitable pressure regulator in front of the device.

  • Page 63: Set-Point Value At 0 %, No Mass Flow, But A Non-Zero Mass Flow Rate Is Measured

    Type 8742 Troubleshooting MFC büS/CANopen The connected actuator is a proportional valve and Reduce the operating pressure. the operating pressure is above the tight sealing To eliminate the defect, return the device to the pressure of the proportional valve. manufacturer 10.12...
  • Page 64 Type 8742 Troubleshooting LED indicator Meaning Action Link/Act-LED (green) slow blinking No connection to the parent pro- Check the cable. (20 s after restart) tocol layer. Link/Act-LED (green) is OFF. No connection to the network. Check the cable. Link-LED (yellow) is ON Connection to the network is es- tablished.

  • Page 65: Spare Parts And Accessories

    Type 8742 Spare parts and accessories SPARE PARTS AND ACCESSORIES CAUTION! Risk of injury, property damage due to incorrect parts. Incorrect options and unsuitable spare parts can cause injuries to people and damage to the appliance and its surroundings. Only use original options and original spare parts from Bürkert.
  • Page 66 Type 8742 Spare parts and accessories Item Article number Connection cable with M12 female connector (A-coded) and free cable 560 365 end, 5 m Connection cable with M12 female connector (A-coded) and free cable 563 108 end, 10 m Analogue variant...

  • Page 67: Compression Fittings For A Device With G-Internal-Threaded Connections

    Type 8742 Spare parts and accessories 11.2 Compression fittings for a device with G-internal- threaded connections The threaded pipe-connection plates of the device obey standard DIN ISO 228/1. If the pipe fittings are not delivered with the device, then choose pipe fittings that are adapted to the medium connection of the device.

  • Page 68: Uninstallation

    Type 8742 Uninstallation UNINSTALLATION 12.1 Dismantling Relieve the medium pressure in the installation. Flush the device with a neutral medium (for example nitrogen) Relieve the flushing medium pressure in the installation. De-energise the device. Remove the electrical wiring. Disconnect the medium connections.

  • Page 69: Logistics

    Type 8742 Logistics LOGISTICS 13.1 Transport and storage Protect the device against moisture and dirt in the original packaging during transportation and storage. Avoid UV radiation and direct sunlight. Protect connections from damage with protective caps. Observe permitted storage temperature.

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