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Related Manuals for Burkert 8745
Summary of Contents for Burkert 8745
- Page 1 Type 8745 Mass flow meter / Mass flow controller Operating Instructions...
- Page 2 We reserve the right to make technical changes without notice. © Bürkert SAS, 2017 - 2025 Operating Instructions 2501/06_GBen_00569558 / Original EN...
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Page 3: Table Of Contents
Type 8745 Table of contents Table of contents About this document 6 Symbols 6 Terms and abbreviations 7 Manufacturer 7 2 Safety 8 Intended use 8 Safety instructions 8 3 Product description 11 Product overview 11 Product identification 14 3.2.1 Type label 14... - Page 4 Type 8745 Table of contents Wire the variant Analogue with D-sub DE-9 male connector 31 6.2.1 Digital input 33 6.2.2 Relay output 34 Wire the variant Analogue with a 6-pin terminal strip 35 Wire the variant Industrial Ethernet 36 Change the network parameters 37...
- Page 5 Type 8745 Table of contents 10.14 Network status indicator 62 11 Spare parts and accessories 63 11.1 Electrical accessories 63 11.2 Compression fittings for a device with G-internal-threaded connections 63 11.3 Additional software 64 12 Uninstallation 65 12.1 Dismantling 65 13 Logistics 66...
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Page 6: About This Document
Type 8745 About this document About this document The document is an important part of the product and guides the user to safe installation and operation. The information and instructions in this document are binding for the use of the product. -
Page 7: Terms And Abbreviations
Type 8745 About this document Terms and abbreviations The terms and abbreviations are used in this document to refer to following definitions. Device Type 8745 Mass flow meter Mass flow controller Unit for relative pressure Manufacturer Bürkert SAS 20, rue du Giessen F-67220 TRIEMBACH-AU VAL The contact addresses are available at Contact. -
Page 8: Safety
Type 8745 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 8745 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 8745 Safety Technical limit values and media Non-compliance with technical limit values or unsuitable media can damage the device and lead to leaks. This can cause accidents and seriously injure or kill people. ▶ Comply with limit values. See Technical data [} 19]...
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Page 11: Product Description
Type 8745 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 Industrial Ethernet • MFM RS485/Modbus RTU • MFC Analogue with proportional valve •... - Page 12 Type 8745 Product description MFM Industrial Ethernet Fig. 2: Example of a variant MFM Industrial Ethernet 1 Status indicator 2 Flow direction marking 3 Base block 4 Functional earth connection 5 Medium connection 6 Electrical connection 7 büS interface 8 Slot for memory card...
- Page 13 Type 8745 Product description MFC Analogue Fig. 4: Example of a variant MFC Analogue 1 Status indicator 2 Actuator 3 Flow direction marking 4 Base block 5 Functional earth connection 6 Medium connection 7 Electrical connection 8 büS interface 9 Slot for memory card...
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Page 14: Product Identification
8 büS interface 9 Slot for memory card 10 Not used Product identification 3.2.1 Type label Fig. 7: Example of type label Type 8745 1 Type 2 Operating voltage 3 Power consumption 4 Note: Observe the operating instructions 5 Bürkert internal version... -
Page 15: Calibration Label
Type 8745 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. 8: Example of calibration label 1 Variant 2 Calibration medium... -
Page 16: Namur Mode
Type 8745 Product description The colour of the status indicator indicates: • Whether device diagnostics are active or not. Diagnostics are active on the device and cannot be deactivated. • If diagnostics are active, then the status indicator shows whether diagnostics events have been generated or not. -
Page 17: Communication Indicator
Type 8745 Product description Fig. 10: Location and description of the LED's of an RJ45 socket 1 Link/Act LED (green) 2 Link LED (yellow) 3.3.4 Communication indicator Applicable for: • Industrial Ethernet variant This LED shows the status of the communication between the device and the PLC (Programmable Logical Controller). -
Page 18: Control Valve
Type 8745 Product description Fig. 11: büS stick, inserted in the related connector of the device 3.4.2 Control valve Applicable for: • MFC with proportional valve The control valve is a direct-acting and normally-closed proportional valve. The control valve provides the sealing function when the following conditions are met: •... -
Page 19: Technical Data
Type 8745 Technical data Technical data Standards and directives The device complies with the valid EU harmonisation legislation. The harmonised standards that have been applied for the conformity assessment procedure are listed in the current version of the EU Declaration of Conformity. -
Page 20: Medium Data
Type 8745 Technical data MFC with motor valve Ambient temperature −10…+50 °C Storage temperature −10…+70 °C Degree of protection (EN 60529 / IP20 IEC 60529) Medium temperature • −10…+70 °C • −10…+60 °C for oxygen Medium Refer to the type label Clean and dry. Quality classes according to DIN ISO 8573-1. - Page 21 Type 8745 Technical data MFC with proportional valve Calibration medium Operating fluid or air Mass flow rate range (reference 20…1500 l /min to N2 (l /min)) Turn-down ratio 1:50 Repeatability ±0.1% of the full scale Measurement accuracy, after 15 ±1.5% of the measured value minute warm-up time ±0.3%...
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Page 22: Electrical Data
Type 8745 Technical data Electrical data MFM Analogue Operating voltage 24 V ±10 % Power consumption Refer to type label Analogue input for the measured Maximum input impedance: 200 Ω value Resolution: 5 μA 0/4...20 mA Analogue input for the measured Minimum input impedance: 20 kΩ... - Page 23 Type 8745 Technical data MFM RS485/Modbus RTU Operating voltage 24 V ±10 % Power consumption < 1 W Communication interface Modbus RTU (List 0 or 1). The communication parameters can be chosen with the Bürkert communicator software. Electrical connections • D-sub DE-9 plug •...
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Page 24: Communication
Type 8745 Technical data MFC Industrial Ethernet Operating voltage 24 V ±10 % residual ripple < 2 % Power consumption Refer to type label Communication interface Industrial Ethernet: PROFINET, EtherNet/IP, EtherCAT, Modbus Electrical connections • 3-pin terminal strip, pitch 3.5 mm •... -
Page 25: Industrial Ethernet: Ethernet/Ip
Type 8745 Technical data EtherCAT® is a registered trademark and patented technology, licensed by Beckhoff Automation GmbH, Germany. 4.5.2 Industrial Ethernet: EtherNet/IP Pre-defined standard objects Identity Object (0x01) Message Router Object (0x02) Assembly Object (0x04) Connection Manager (0x06) DLR Object (0x47) -
Page 26: Industrial Ethernet: Profinet Io
Type 8745 Technical data 4.5.4 Industrial Ethernet: PROFINET IO Topology recognition LLDP, SNMP V1, MIB2, Physical Device Minimum cycle time 2 ms not supported MRP media redundancy MRP client is supported Other supported functions DCP, VLAN Priority Tagging, Shared Device Transmission speed 100 Mbit/s... -
Page 27: Medium Connection
Type 8745 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 •... -
Page 28: Npt-Internal-Threaded Connections
Type 8745 Medium connection ▶ Remove all dirt from the pipes and from the components of the installation that carry the medium. ▶ Cut the pipe squarely [A] and deburr [B]. ▶ Remove the protective cap that closes the threaded connection. -
Page 29: Flange Connections
Type 8745 Medium connection ▶ Remove all dirt from the pipes and from the components of the installation that carry the medium. ▶ Cut the pipe squarely [A] and deburr [B]. ▶ Remove the protective cap that closes the threaded connection. -
Page 30: Tri-Clamp Connections
Type 8745 Medium connection ▶ 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. Obey the torques that are given by the manufacturer of the fitting used. -
Page 31: Electrical Connection
Type 8745 Electrical connection Electrical 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. Additional documentation • Device description file and object description for the related Type (download from country.burkert.com). - Page 32 Type 8745 Electrical connection D-sub DE-9 male connector Assignment Digital input GND for the digital input and the power supply +24 V Relay: normally closed contact (Break contact) Relay: reference contact Not used Not used Analogue output for the measured value...
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Page 33: Digital Input
Type 8745 Electrical connection 6.2.1 Digital input The D-sub DE-9 male connector has a digital input. A digital input is used to remotely trigger a function. Available functions on MFM • Reset the totalizer for the active gas. • Select which gas is active among 3 gases. -
Page 34: Relay Output
Type 8745 Electrical connection Function Level 1 Level 2 Level 3 MFC: Start autotune Triggers the function Not used Not used MFC: Actuator control Triggers the closing of Triggers the normal Triggers the opening of the actuator operation mode the actuator... -
Page 35: Wire The Variant Analogue With A 6-Pin Terminal Strip
Type 8745 Electrical connection The relay switching can show the following events: • A warning message has been generated. For example if the supply voltage is too high, then a warning message is generated. • A failure message has been generated. For example if a sensor failure is detected, then a failure message is generated. -
Page 36: Wire The Variant Industrial Ethernet
Type 8745 Electrical connection 6-pin terminal strip Assignment +24 V Set-point analogue input + Set-point analogue input GND Actual value analogue output + Actual value analogue output GND Tab. 9: Pin assignment of the 6-pin terminal strip of the device ▶ Connect the conductors. -
Page 37: Change The Network Parameters
Type 8745 Electrical connection ▶ Open the cover of the device. ▶ Connect the conductors according to the figure. ▶ Earth the device. Refer to Connect the functional earth [} 40] ▶ Tighten the conductors at a torque between 0.22...0.25 N (0.16...0.18 lbf·ft.) Connecting the Industrial Ethernet The cable shield is connected by the housing of the cable plug. -
Page 38: Over The Product Web-Server
Type 8745 Electrical connection 6.5.1 Over the product web-server NOTICE! Security risk due to default passwords. Unauthorised persons can log in to the web server and change the parameters. ▶ Change the default passwords. ▶ If the web server is not needed, then disable access with the Bürkert Communicator software, refer to Configuration with Bürkert Communicator [} 42]... -
Page 39: Wire The Variant Rs485/Modbus Rtu
Type 8745 Electrical connection ▶ Change the parameters. ▶ To update the parameters, restart the device. The device restarts. The network parameters of the device are changed. Wire the variant RS485/Modbus RTU NOTICE! Requirements for the correct operation of the device. -
Page 40: Connect The Functional Earth
Type 8745 Electrical connection ▶ Tighten the screws to a torque of 0,5...0,6 N·m (0,37...0,44 lbf·ft). ▶ Connect the functional earthing of the device. Refer to Connect the functional earth [} 40] Connect the functional earth WARNING! Risk of ignition and risk of fire that are due to electrostatic discharge. -
Page 41: Commissioning
Type 8745 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. -
Page 42: Configuration With Bürkert Communicator
▶ 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 PC. -
Page 43: Setting The Industrial Ethernet Address
Type 8745 Configuration with Bürkert Communicator A window opens. ▶ Select Connect via USB (büs Stick). ▶ Select the port Bürkert USB büS stick, click on Finish and wait until the device symbol appears in the list of devices. ▶ In the navigation area, click on the symbol related to the device: The device menu appears. -
Page 44: User-Defined Adjustment
Type 8745 Configuration with Bürkert Communicator MFC: If the integrated valve is fully open, the internal device temperature increases. If the internal device temperature increases, the device can be damaged. ▶ Do not let the valve fully open for more than 10 minutes. -
Page 45: Operation Modes
Type 8745 Configuration with Bürkert Communicator The Set-point value source is kept after a restart, except when the selected set-point source is Manual set-point value or Analyze system. Set-point value source Description Operation mode Analog set-point value The set-point value is set through the analogue... -
Page 46: Normal Operation Mode
Type 8745 Configuration with Bürkert Communicator Operating mode Refer to Variant Industrial Ethernet: Normal operation mode [} 46] Automatic Variant Analogue: Normal operation mode [} 46] Analog setpoint Manual setpoint Select the source that gives the set-point value [} 48] Stored setpoint Select the source that gives the set-point value [} 48] Open-loop control mode Select the source that gives the set-point value [} 48]... -
Page 47: Analogue Variant
Type 8745 Configuration with Bürkert Communicator The sensor measures the mass flow rate and compares the measured value x with the set-point value w. The device calculates the set-point position value y of the actuator. • If the actuator is a control valve, then the set-point position value y determines the opening of the control valve. -
Page 48: Select The Source That Gives The Set-Point Value
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. Download the initiation files and the related documentation at country.burkert.com. The setting of the parameter Set-point value source is kept after a restart, except when the device performs the function Analyze system or the set-point value source was set to manual set-point. -
Page 49: Set-Point Values Without Communication
Type 8745 Configuration with Bürkert Communicator The possible choices for the parameter Set-point value source are: • Variant Analogue: Analog set-point value source: the setpoint value is set via the analogue input. • Variant Industrial Ethernet: Automatic: the set-point value is set via the fieldbus. If different fieldbus participants simultaneously specify a set-point value for the device, it is always the last set value that is used. -
Page 50: Maintenance
Type 8745 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: Calibration
Type 8745 Maintenance ▶ CAUTION! Before mounting the parts back, make sure that the fine side of the mesh filter [6] faces the flange plate [2] ▶ Push back the compression spring [7] together with the mesh filter [6] into the base block and secure them with the circlip [4]. - Page 52 Type 8745 Maintenance Fig. 23: Inserted memory card ▶ Restart the device to write the data on the new memory card. Possible problems related to the memory card are given in Troubleshooting [} 53] 52 | 66...
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Page 53: Troubleshooting
Type 8745 Troubleshooting Troubleshooting 10.1 Status indicator is red MFM Analogue The supply voltage is out of the error ▶ Operate the device within the specifications. If the status range. The device can be damaged. indicator is still red, then send the device back to Bürkert. -
Page 54: Status Indicator Is Orange
Type 8745 Troubleshooting MFC Industrial Ethernet The supply voltage is out of the error ▶ Operate the device within the specifications. If the status range. The device can be damaged. indicator is still red, then send the device back to Bürkert. -
Page 55: Status Indicator Is Yellow
Type 8745 Troubleshooting MFC Analogue A calibration procedure is in progress. ▶ Wait until the calibration procedure is completed. The Autotune is in progress. ▶ Wait until the Autotune is completed. The operation mode of the device is ▶ Refer to... - Page 56 Type 8745 Troubleshooting MFM Industrial Ethernet One of the following values is out of ▶ Operate the device within the specifications. If the status specification. The sensor or the device indicator is still yellow, then send the device back to can be damaged.
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Page 57: Status Indicator Is Blue
Type 8745 Troubleshooting MFC Industrial Ethernet One of the following values is out of ▶ Operate the device within the specifications. If the status specification. The sensor or the device indicator is still yellow, then send the device back to can be damaged. -
Page 58: Status Indicator Is Off
Type 8745 Troubleshooting 10.5 Status indicator is off Cause Solution The device is not energised. ▶ Make sure that the device is correctly wired. ▶ Make sure that the voltage supply is 24 V ▶ Make sure that the power supply source is working properly. -
Page 59: No Mass Flow Rate
Type 8745 Troubleshooting 10.9 No mass flow rate 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- ▶ If the cut-off limit is too high, decrease the value of the off limit. -
Page 60: Set-Point Value At 0 %, But Medium Still Flows
Type 8745 Troubleshooting Functional earth (FE) is not connected ▶ To connect the functional earth, use a green-and-yellow properly. cable that is as short as possible. And the cable cross- section must be at least equal to the cross section of the power-supply cable. -
Page 61: Set-Point Value At 0 %, No Mass Flow, But A Non-Zero Mass Flow Rate Is Measured
Type 8745 Troubleshooting MFC RS485/Modbus RTU The operating pressure is above the ▶ Reduce the operating pressure. tight sealing pressure of the control ▶ To eliminate the defect, return the device to the valve. manufacturer. The connected actuator is a propor- ▶... -
Page 62: Network Status Indicator
Type 8745 Troubleshooting 10.14 Network status indicator LED indicator Meaning Action Link/Act-LED (green) fast blink- Connection to the parent pro- tocol layer is established. Link/Act-LED (green) slow Connection to the protocol blinking (directly after restart) layer is searched. Link/Act-LED (green) slow No connection to the parent ▶... -
Page 63: Spare Parts And Accessories
Type 8745 Spare parts and accessories Spare parts and accessories Risk of injury and/or damage due to incorrect parts. ▶ Use only original accessories and original spare parts from Bürkert. Order the parts directly on our eShop. 11.1 Electrical accessories ▶... -
Page 64: Additional Software
Type 8745 Spare parts and accessories Device internal- Pipe diameter Article number threaded connection in Stainless steel com- Seal (1 piece) accordance with DIN pression-fitting ISO 228/1 G 1/4 6 mm 901538 901575 (Copper) G 1/4 8 mm 901540 G 1/4 1/4"... -
Page 65: Uninstallation
Type 8745 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. -
Page 66: Logistics
Type 8745 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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