Download
Share
Print this page
Burkert 8744 Operating Instructions Manual
  1. Manuals
  2. Brands
  3. Burkert Manuals
  4. Measuring Instruments
  5. 8744
  6. Operating instructions manual

Burkert 8744 Operating Instructions Manual

Mass flow meter / mass flow controller
Hide thumbs

Advertisement

Quick Links

Download this manual
Type 8744
Mass flow meter / Mass flow controller
Operating Instructions

Advertisement

loading
Need help?

Need help?

Do you have a question about the 8744 and is the answer not in the manual?

Questions and answers

Related Manuals for Burkert 8744

Summary of Contents for Burkert 8744

  • Page 1 Type 8744 Mass flow meter / Mass flow controller Operating Instructions...
  • Page 2 We reserve the right to make technical changes without notice. © Bürkert Werke GmbH & Co. KG, 2024 Operating Instructions 2402/00 00574749 / Original EN...
  • Page 3 Type 8744 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 ........................ 12 3.2.1 Type label .......................... 12 3.2.2...
  • Page 4 Type 8744 Table of contents Connect the functional earth...................... 27 7 Commissioning............................ 28 Commissioning procedure...................... 28 8 Configuration with Bürkert Communicator ..................... 29 Setting tools ............................ 29 Connect to the Bürkert Communicator................... 29 Functions ............................ 30 8.3.1 Shut-off threshold...................... 30 8.3.2 Flush mode ........................ 30 Change of medium.......................... 30 User-defined adjustment ........................ 31 Zero point adjustment........................ 31...
  • Page 5 Type 8744 Table of contents 11.2 Compression fittings for a device with G-internal-threaded connections ........ 44 11.3 Mesh filters............................ 45 11.4 Additional software ......................... 45 12 Uninstallation............................ 46 12.1 Dismantling ............................. 46 13 Logistics .............................. 47 13.1 Transport and storage ........................ 47 13.2 Return ............................. 47 13.3 Disposal ............................ 47...
  • Page 6 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 Fluid Control Systems Christian-Bürkert-Str.
  • Page 7 Type 8744 About this document Terms and abbreviations The terms and abbreviations are used in this document to refer to following definitions. Device Type 8744 Mass flow meter Mass flow controller büS Bürkert system bus, a communication bus developed by Bürkert and based on the...
  • Page 8 Type 8744 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 8744 Safety Meet the requirements specified by EN 61340-5-1 to minimise or avoid the possibility of damage caused by a sudden electrostatic discharge. Do not touch electronic components when the supply voltage is connected. Electric shock due to electrical components Touching live parts can result in severe electric shock.
  • Page 10 Type 8744 Safety Medium under pressure Medium under pressure can seriously injure people. In the event of overpressure or pressure surges, the device or lines can burst. Pneumatic lines that are defective or not securely fastened can come loose and swing around.
  • Page 11 Type 8744 Product description PRODUCT DESCRIPTION The device is used for ultimate precision in the feedback control of medium. This document describes following variant: MFM büS/CANopen MFC büS/CANopen with proportional valve Product overview 1. Status indicator 2. Flow direction marking 3.
  • Page 12 Type 8744 Product description Product identification 3.2.1 Type label Fig. 1: Example of type label Type 8744 1 Type 2 Operating voltage 3 Power consumption 4 Note: Observe the operating instructions 5 Bürkert internal version 6 Sealing material 7 Maximum operating pressure...
  • Page 13 Type 8744 Product description 3.2.3 Conformity marking Fig. 3: Conformity label 1 CE marking 2 Certification marking for USA and/or Canada 3 Warning: hot surface 4 Indication for disposal 3.2.4 Symbols and markings on device Earth terminal Direct current Display elements 3.3.1...
  • Page 14 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 15 Type 8744 Product description 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 16 Type 8744 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 17 Type 8744 Technical data Medium data Calibration medium Nitrogen (N2) Nominal flow range Q (reference 0.01…100 I /min to N2 (l /min)) Turn-down ratio 1:20 (Q < 0,025 l /min) 1:50 (Q ≥ 0,025 l /min) others on request Repeatability ±0.1% of the full scale Measurement accuracy, after ±0.8% of the measured value...
  • Page 18 Type 8744 Technical data Criteria Quality class Value Maximum particle size 1 μm Maximum particle density 1 mg/m Maximum dew point under pressure 3 °C Maximum oil concentration 0.01  mg/m Tab. 2: Quality criteria of the medium, ISO 8573-1, Compressed Air - Part 1: Contaminants and purity classes 4.3.1...
  • Page 19 Type 8744 Technical data Fig. 5: Formula to calculate the pressure loss in an MFM Pressure loss of the medium Pressure loss of air Density of the medium at the standard conditions according to DIN 1343 (P 1013.25 mbar, T = 273.15 K) Density of air at the standard conditions according to DIN 1343 (P = 1013.25 mbar,...
  • Page 20 Type 8744 Technical data MFC büS/CANopen Operating voltage 24 V DC ±10 % residual ripple < 2 % Power consumption Refer to type label Communication interface büS and CANopen. The communication type can be chosen with the Bürkert Communicator software. Electrical connections...
  • Page 21 Type 8744 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 22 Type 8744 Medium connection Fig. 7: Pipe cut and deburred Remove the protective cap that closes the threaded connection. ferule Fig. 8: 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 23 Type 8744 Medium connection Cut the pipe squarely [1] and deburr [2]. Fig. 11: 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 24 Type 8744 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 25 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 26 Type 8744 Electrical connection Colour of the büS cable conductor Signal black white CAN_H blue CAN_L Tab. 3: 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 27 Type 8744 Electrical connection Wire the mating female connector. Observe the instructions that are given by the manufacturer of the mating female connector. Insert each conductor into the appropriate pin. Refer to the following figure. 5-pin M12 male connector (A...
  • Page 28 Type 8744 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 29 / 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 30 Type 8744 Configuration with Bürkert Communicator Functions 8.3.1 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 31 Type 8744 Configuration with Bürkert Communicator 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. This procedure is described in device specific Documents and tools in the Bürkert Communicator.
  • Page 32 Type 8744 Configuration with Bürkert Communicator Set-point value source Description Operation mode Open-loop control mode To directly set the set-point posi- Open-loop control mode tion (y) to the actuator. The value that is given in the menu Actuator > Parameter >...
  • Page 33 Type 8744 Configuration with Bürkert Communicator xout xd = w-x Fig. 14: Function diagram of the MFC with control valve 1 Medium inlet 2 Sensor 3 Control valve 4 Medium outlet 5 Electronics x measured value of the mass flow rate...
  • Page 34 On a büS/CANopen variant it is possible to alternatively change the related object. Refer to the related pro- cedure 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...
  • Page 35 Type 8744 Configuration with Bürkert Communicator 8.12 Set-point values without communication büS / CANopen variant The function makes it possible to specify the set-point values of an MFC even if the communication with the external set-point value provider (for example a PLC) is broken. If the function is used, then the set-point is kept constant.
  • Page 36 Type 8744 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 37 Troubleshooting [} 38] 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 38 Type 8744 Troubleshooting TROUBLESHOOTING 10.1 Status indicator is red MFM büS/ CANopen 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 39 Type 8744 Troubleshooting Cause Solution The device has been operated outside Operate the device within the specification. If the status in- the temperature limits. The device can be dicator is still red, then send the device back to Bürkert. damaged.
  • Page 40 Type 8744 Troubleshooting MFC büS/CANopen 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 41 Type 8744 Troubleshooting 10.7 Replacement device adopts none of the values from the defective device Cause Solution The article number of the replacement Use a replacement device that has the same article number device is different from the article number than the defective device.
  • Page 42 Type 8744 Troubleshooting Cause Solution The set-point value is lower than the Increase the set-point value until it is higher than 2% of the zero-point shut-off limit. nominal flow rate. 10.10 Unstable measured value Cause Solution Functional earth (FE) is not connected To connect the functional earth, use a green-and-yellow properly.
  • Page 43 Type 8744 Troubleshooting 10.12 Set-point value at 0 %, no mass flow, but a non-zero mass flow rate is measured Cause Solution The installation position of the device is Install the device as recommended in Medium connection incorrect. [} 21] Run the Autotune function to adapt to the operating condi- tions.
  • Page 44 Type 8744 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 45 Type 8744 Spare parts and accessories Device internal- threaded Pipe diameter Article number connection in accord- Stainless steel compres- Seal (1 piece) ance with DIN ISO 228/1 sion-fitting G 1/4 6 mm 901538 901575 (Copper) G 1/4 8 mm 901540 G 1/4 1/4"...
  • Page 46 Type 8744 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 47 Type 8744 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.