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8745 BURKERT | Alldatasheet

Document overview

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• PDF pages: 26

Technical content

Visit product website  DATA SHEET Type 6013  Plunger valve 2/2-way direct-acting Type 6027  Direct-acting 2/2-way plunger valve Type 0330  Direct-acting 2/2 or 3/2-way pivoted armature valve Type 0290  Servo-assisted 2/2-way diaphragm valve Standard | EU | en | 2024-03-06 | 16 Mass flow controller (MFC)/mass flow meter (MFM) for gases

• Nominal flow ranges from 20 l/min up to 2500 l/min High accuracy and repeatability Communication via standard signals or Industrial Ethernet Electromagnetic and motor-driven valve actuation available Easy device exchange through configuration memory The mass flow controller (MFC)/mass flow meter (MFM) Type 8745 is suitable for mass flow control of high flow rates. Type 8745 can be configured as MFM or MFC. Optionally, four different gases can be calibrated. The thermal inline sensor is located directly in the main gas stream and therefore reaches very fast response times while causing a very low pressure drop. A direct-acting proportional valve as regulating unit guarantees high sensitivity. The integrated PI controller ensures outstanding control characteristics of the MFC. MFC Type 8745 is available in two variants: with electromagnetic proportional valve and with motor-driven proportional valve. Aside of an analog and Industrial Ethernet variant, a Modbus RTU variant is availa- ble as well. Product variants described in the data sheet may differ from the product presentation and description. Type description Can be combined with Type 8745 © Christian Bürkert GmbH & Co. KG, Subject to alteration

2 | 26Visit product website  Table of contents 1. General technical data 4 1.2. Variant with electromagnetic proportional valve .... 1.3. Variant with electromotive proportional valve .... 2. Approvals and conformities 6 2.2. Conformity ... 2.3. Standards .... 2.4. North America (USA/Canada) ... 2.5. Foods and beverages/Hygiene ... 2.6. Oxygen 3. Materials 7 4. Dimensions 7 MFC/MFM for small nominal flow rates MFC/MFM for large and very large nominal flow rates 4.2. Variant with electromagnetic proportional valve .... MFC with valve Type 2873 MFC with valve Type 2875 MFC with valve Type 2836 4.3. Variant with electromotive proportional valve .... MFC with valve Type 3280 MFC with valve Type 3285 (DN12 and DN15) MFC with valve Type 3285 (DN20 and DN25) 4.4. MFM variant .... Variant with base block 00 or A1 for small nominal flow rates Variant with base block A2 for large nominal flow rates Variant with base block A3 for very large nominal flow rates 5. Device / Process connections 19 5.2. Analogue 5.3. Modbus RTU .... 6. Performance specifications 22 6.2. Nominal flow range of typical gases .... 6.3. Derating diagram for electromotive variants .... 7. Product operation 23 8. Product accessories 24 8.2. Connecting Type 8745 with the Bürkert Communicator software .... 8.3. Configuration management for easy device replacement ... 8.4. Web server for Industrial Ethernet variant .... 9. Ordering information 25

3 | 26Visit product website  9.2. Recommendation regarding product selection.... 9.3. Bürkert product filter 9.4. Bürkert Product Enquiry Form ... 9.5. Ordering chart accessories ....

4 | 26Visit product website  1. General technical data 1.1. General Product properties Dimensions Further information can be found in chapter “4. Dimensions” on page 7 Material Seal FKM or EPDM (depending on gas) 1.) Housing PC (polycarbonate) Base block Aluminium or stainless steel 1.4404/316L Configuration management Further information can be found in chapter “8.3. Configuration management for easy device replacement” on page Electrical data Operating voltage 24 V DC Residual ripple ± Voltage tolerance ± Electrical connection Analogue variant D-Sub 9 2.) or terminal block, 6-pin Industrial Ethernet variant 2 x RJ45 (Switch) 3.) Modbus RTU variant D-Sub 9 Medium data Operating medium Neutral, pure gases (others on request) Calibration medium Operating medium or air Medium temperature - 4.)…+ 70 °C (- 10 °C 4.)…+ 60 °C with oxygen) Process/Port connection & communication Analogue interface 4…20 mA, 0…20 mA, 0…10 V or 0…5 V Input impedance: > 20 kΩ (voltage) or < 300 Ω (current) Maximum current: 10 mA (voltage output) Maximum load: 600 Ω (current output) Digital communication interface Modbus RS485/RTU list 0 and list 1, Industrial Ethernet: EtherCAT®, EtherNet/IP, Modbus TCP, PROFINET (all digitally via fieldbus) Port connection G or NPT ¼", ⅜", ½", ¾", 1", sub-base Environment and installation Installation position Horizontal or vertical Ambient temperature - °C…+ °C (higher temperatures on request) Accessories Software Bürkert Communicator Further information can be found in chapter “8.1. Bürkert Communicator software” on page 24 1.) In addition, when using the electromotive proportional valve: - Type

3280 DN4: PEEK valve seat seal

• Type 3285: Al2O3 valve seat seal 2.) An additional digital input and a relay output are available for the analogue variant with D-Sub 9. 3.) Supply voltage via separate terminal block 4.) When using an electromotive proportional valve, the minimum medium temperature is 0 °C. 1.2. Variant with electromagnetic proportional valve Type 8745 can be configured as MFM or MFC as required. The MFC variant uses direct-acting proportional valves of the 287x series. These electromagnetic proportional valves are normally closed and stand for highest measuring accuracy and repeatability with settling times resp. response times of a few hundred milliseconds. Product properties Dimensions Further information can be found in chapter “1.2. Variant with electromagnetic proportional valve” on page 4 Total weight Approx. 1800 g (aluminium, 16 W valve) Approx. 3100 g (stainless steel 1.4404/316L, 16 W valve) LED display 1.) RGB-LED based on NAMUR NE107 Control valve (proportional valve) Normally closed Valve orifice 0.8…12 mm KVS value range 0.02…2.5 m3/h

5 | 26Visit product website  Performance data Nominal flow range (QN) MFC: 20…1500 l/min (N2) MFMs ≤ 2500 l/min (N2) Maximum operating pressure (overpressure to atmospheric pressure) bar, optional up to 25 bar (MFM) For MFCs, the maximum operating pressure depends on the medium and nominal valve size Measuring accuracy 2.) ± 1.5 % of reading ± 0.3 % FS (under calibration conditions) Repeatability ± 0.1 FS Measuring span 1:50 Settling time (MFC)/Response time (MFM) (t95 %) < 500 ms Electrical data Power consumption 3.) Max. 4 W (as MFM) Max. 12.5…31.5 W (as MFC, depending on proportional valve type) Approvals and conformities Protection class IP20 North America (USA/Canada) Further information can be found in chapter “2.4. North America (USA/Canada)” on page 6 Foods and Beverages/Hygiene Further information can be found in chapter “2.5. Foods and beverages/Hygiene” on page 6 Oxygen Further information can be found in chapter “2.6. Oxygen” on page 6 1.) For a detailed description of LED colours see operating instructions Type 8745  2.) If the operating medium is different from the calibration medium, the actual measurement accuracy might vary from the indicated value. If the operating medium is natural gas, the measurement accuracy depends on the composition of the natural gas, which can vary depending on the origin and season. 3.) Information in relation to the typical power consumption (at + °C ambient temperature, nominal flow and 30 min closed-loop control mode). Information according to UL 61010 may vary (see operating instructions Type 8745 ). 1.3. Variant with electromotive proportional valve Type 8745 with electromotive proportional valve is especially suitable for applications with high inlet pressures of up to 22 bar or high flow rates (at a low pressure drop). The motor’s power consumption to hold a specific opening position is nearly zero. This key feature can reduce the energy consumption of a plant dramatically. Without electrical power the valve remains in its current position. The maximum duty cycle of the motor depends on the ambient temperature. The duty cycle does not refer to the duty cycle of the device but to the duty cycle of the motor. The motor is not switched on unless the valve is to move. Frequent set-point value input changes will drastically increase the motor’s duty cycle. Further information about the derating curve can be found in the chapter “6.3. Derating diagram for electromotive variants” on page 23 Product properties Dimensions Further information can be found in chapter “1.3. Variant with electromotive propor- tional valve” on page 5 Total weight Approx. 1670 g (aluminium, valve Type 3280) Approx. 2940 g (stainless steel 1.4404/316L, valve Type 3280) LED display 1.) With MFM: RGB LED according to NAMUR NE107 With valve: RGB LED to indicate valve opening Control valve (proportional valve) Normally closed Valve orifice 2…20 mm KVS value range 0.5…7.8 m3/h Performance data Nominal flow range (QN) 20…2500 l/min (N2) Maximum operating pressure (overpressure to atmospheric pressure) bar (MFM) For MFCs, the maximum operating pressure depends on the medium and nominal valve size Measuring accuracy ± % of reading ± 0.5 FS (under calibration conditions Repeatability ± 0.5 FS Measuring span 1:50 Settling time (MFC)/Response time (MFM) (t95 %) 2.) < 5 s Electrical data Power consumption Max. 4 W (as MFM) Max. 12 W (as MFC) 3.) Approvals and conformities Degree of protection IP20 North America (USA/Canada) Further information can be found in chapter “2.4. North America (USA/Canada)” on page 6

6 | 26Visit product website  Foods and Beverages/Hygiene Further information can be found in chapter “2.5. Foods and beverages/Hygiene” on page 6 Oxygen Further information can be found in chapter “2.6. Oxygen” on page 6 1.) For a detailed description of LED colours see operating instructions Type 8745  2.) If the operating medium is different from the calibration medium, the actual measurement accuracy might vary from the indicated value. If the operating medium is natural gas, the measurement accuracy depends on the composition of the natural gas, which can vary depending on the origin and season. 3.) Data during the movement of the electromotive proportional valve. Valve holding power is < 2. Approvals and conformities 2.1. General notes

• The approvals and conformities listed below must be stated when making enquiries. This is the only way to ensure that the product complies with all required specifications. Not all available variants can be supplied with the below menti oned approvals or conformities. 2.2. Conformity In accordance with the Declaration of Conformity, the product is compliant with the EU Directives. 2.3. Standards The applied standards which are used to demonstrate compliance with the EU Directives are listed in the EU-Type Examination Certificate and/or the EU Declaration of Conformity. 2.4. North America (USA/Canada) Approval Description Optional: UL Listed for the USA and Canada The products are UL Listed for the USA and Canada according to: UL 61010 1 (ELECTRICAL EQUIPMENT FOR MEASUREMENT, CONTROL, AND LABORATORY USE – Part 1: General Requirements) CAN/CSA-C22.2 No. 61010 2.5. Foods and beverages/Hygiene Conformity Description FDA FDA – Code of Federal Regulations (valid for variable code PL02, PL03) All wetted materials are compliant with the Code of Federal Regulations published by the FDA (Food and Drug Administration, USA) according to the manufacturer‘s declaration. USP United States Pharmacopeial Convention (USP) (valid for variable code PL04) All wetted materials are biocompatible according to the manufacturer‘s declaration. EC Regulation 1935/2004 of the European Parliament and of the Council (valid for variable code PL01, PL02) All wetted materials are compliant with EC Regulation 1935/2004/EC according to the manufacturer‘s declaration. 2.6. Oxygen Conformity Description Optional: Suitability for oxygen (valid for the variable code NL02) The products are suitable for use with gaseous oxygen, according to the manufacturer‘s declaration.

7 | 26Visit product website  3. Materials 3.1. Bürkert resistApp Bürkert resistApp – Chemical Resistance Chart You want to ensure the reliability and durability of the materials in your individual application case? Verify your combination of media and materials on our website or in our resistApp. Start Chemical Resistance Check 4. Dimensions 4.1. Thread depths of base blocks MFC/MFM for small nominal flow rates Note: The following table applies to base blocks 00…A1. Thread (A) Thread depth [mm] G ¼ 12 NPT ¼ 11 G ⅜ 12 NPT ⅜ 11 G ½ 15 NPT ½ 14 G ¾ 16 NPT ¾ 15 MFC/MFM for large and very large nominal flow rates Note: The following table applies to base blocks A2…A3. Thread (A) Thread depth [mm] G ½ 15 NPT ½ 14 G ¾ 16 NPT ¾ 15 G 1 18 NPT 1 16.8

8 | 26Visit product website  4.2. Variant with electromagnetic proportional valve MFC with valve Type 2873 Variant with base block or for small nominal flow rates Note: Dimensions in mm 201 82.5 100 102.7 0 A 53.5 With valve Type 2873 4 x M4 10 37.5 102.5 180 101

9 | 26Visit product website  MFC with valve Type 2875 Variant with base block or for small nominal flow rates Note: Dimensions in mm 219.5 19.5 82.6 100 102.7 116 A 53.5 With valve Type 2875 4 x M4 10 37.5 102.5 200

10 | 26Visit product website  MFC with valve Type 2836 Variant with base block or for small nominal flow rates Note: Dimensions in mm A 53.5 with valve Type 2836 205 82.5 100 102.7 133.1 171 4 x M4 10 51.7 37.5 102.5 128.5 200.5 205

11 | 26Visit product website  Variant with base block A2 for large nominal flow rates Note: Dimensions in mm 205 96.5 114 116.7 179 141.1 A 53.5 105 with valve Type 2836 4 x M4 10 51.7 37.5 102.5 128.5 200.5 205

12 | 26Visit product website  Variant with base block A3 for very large nominal flow rates Note: From a nominal flow rate QN > 1500 l/min onwards, the overall length increases by 30 mm. Dimensions in mm 96.5 114 179 51.7 67.5 132.5 235 105 53.5 Ø A

13 | 26Visit product website  4.3. Variant with electromotive proportional valve MFC with valve Type 3280 Variant with base block or for small nominal flow rates Note: Dimensions in mm 102.7 151.5 155.9 37.5 102.5 200 R28.2 126 40 4 x M4 10 100 227 approx. 27 A 53.5 Variant with base block A2 for large nominal flow rates Note: Dimensions in mm 116.7 165 169.4 R28.2 140 37.5 102.5 200 114 227 approx. 27 4 x M4 10 140.9 Ø A

14 | 26Visit product website  Variant with base block A3 for very large nominal flow rates Note: From a nominal flow rate QN > 1500 l/min onwards, the overall length increases by 30 mm. Dimensions in mm 96.5 114 165 A 4x M4 10 67.5 132.5 230 257 approx. 27

15 | 26Visit product website  MFC with valve Type 3285 (DN12 and DN15) Variant with base block for large nominal flow rates Note: Dimensions in mm 37.5 102.5 220 R28.2 140 116.7 158 162 4 x M4 10 114 249 approx. 29 104.9 Ø A Variant with base block A3 for very large nominal flow rates Note: From a nominal flow rate QN > 1500 l/min onwards, the overall length increases by 30 mm. Dimensions in mm A 77 279 approx. 29 105 96.5 114 158 4x M4 10 67.5 132.5 250

16 | 26Visit product website  MFC with valve Type 3285 (DN20 and DN25) Variant with base block for large nominal flow rates Note: Dimensions in mm 116.7 160.5 165 140 37.5 102.5 229 114 251 approx. 22 104.9 Ø A R28.2 4 x M4 10 Variant with base block A3 for very large nominal flow rates Note: From a nominal flow rate QN > 1500 l/min onwards, the overall length increases by 30 mm. Dimensions in mm A 77 281 approx. 22 96.5 114 160.5 4x M4 10 67.5 132.5 259

17 | 26Visit product website  4.4. MFM variant Variant with base block 00 or A1 for small nominal flow rates Note: Dimensions in mm 37.5 102.5 140 R28.2 126 53.5 A 4 x M4 10 100 Variant with base block A2 for large nominal flow rates Note: Dimensions in mm R28.2 140 37.5 102.5 140 114 4 x M4 10 53.5 105 Ø A

18 | 26Visit product website  Variant with base block A3 for very large nominal flow rates Note: For a nominal flow QN > 1500 l/min onwards, the overall length increases by 30 mm. Dimensions in mm R27.6 96.5 114 140 A 105 53.5 4x M4 10 67.5 132.5 170

19 | 26Visit product website  5. Device / Process connections 5.1. Industrial Ethernet Terminal block, 3-pin Pin Assignment 1 2 3

1 FE (functional earth)

2 DGND

V RJ45 socket Pin Assignment

1 TX +

2 TX –

3 RX +

4 Not connected

5 Not connected

6 RX –

7 Not connected

8 Not connected

20 | 26Visit product website  5.2. Analogue D-Sub, 9-pin, plug Pin Assignment

1 Digital input

2 GND

(for supply voltage and digital input) 3 24 V

4 Relay, normally closed contact

5 Relay, reference contact

6 Set-point value input +

7 Set-point value input GND

8 Actual value output

9 Actual value output GND

Terminal block, 6-pin Pin Assignment 1 24 V

3 Set-point value input +

4 Set-point value input GND

5 Actual value output +

6 Actual value output GND

21 | 26Visit product website  5.3. Modbus RTU D-Sub, 9-pin, plug Pin Assignment

1 Not connected

6 RS485-Y

7 RS485-Z

8 RS485-B

9 RS485-A

22 | 26Visit product website  6. Performance specifications 6.1. MFM pressure loss diagram The diagram shows an example of the pressure loss characteristics when air flows through. To determine the pressure loss of other gases, the corresponding air equivalent must first be calculated and the base block used for the other gas taken into account. 100 110 120 130 140 150 160 170 180 190 200 210 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 G 1/4 G 3/8 G 1/2 G 3/4 G 1 ∆ p [mbar] Q [lN/min] 6.2. Nominal flow range of typical gases Note: All values refer to 1013.25 mbar abs and 273.15 K (0 °C) (Index N) Other gases and gas mixtures are possible on request. Gas Min. QN Max. QN [l/min] [l/min] Acetylene 20 320 (from 65 l/min with air calibration) Ammonia 8 1000 Argon 20 1600 Carbon dioxide 20 800 Air 20 2500 Methane 20 1200 Propane 20 200 Oxygen 20 2500 Nitrogen 20 2500

23 | 26Visit product website  6.3. Derating diagram for electromotive variants 5 10 15 20 100 25 30 35 40 45 50 55 60 65 Maximum ambient temperature [°C] Duty cycle [%] DN 12...20 (< 6 bar) DN 2...6 (< 6 bar) 7. Product operation 7.1. Measuring principle This sensor works as a hot-film anemometer in the so called CTA operational mode (Constant Temperature Anemometer). 2 resistors with precisely specified temperature coefficients are located directly in the media flow. 3 resistors are located outside the flow. All resistors are connected to form a bridge. The first resistor in the gas flow (RT) measures the fluid temperature, while the second, low value resistor (RS) is heated so that it is maintained at a fixed, predefined overtemperature with respect to the fluid temperature. The heating current required to maintain this temperature is a measure of the heat being removed by the flowing gas and represents the primary measurement. An adequate flow conditioning within the MFC and the calibration with high quality flow standards ensure that the mass of gas flowing per time unit can be derived from the primary signal with high accuracy. R R RV RT RS PI IS

24 | 26Visit product website  8. Product accessories 8.1. Bürkert Communicator software Note: The corresponding communication software can be downloaded from the website Type 8920 The Bürkert Communicator is the most important software component of the EDIP (Efficient Device Integration Platform). Various features of this universal tool simplify the configuration and parametrisation of devices equipped with a digital CANopen-based interface. With this tool, the user has a complete overview of cyclic process values as well as acyclic diagnostic data. The integrated graphical programming environment enables the creation of decentralised sub-system control functions. The connection to the PC is established with a USB büS interface set. The adapter is available as an accessory (see “9.5. Ordering chart accessories” on page 26 The Bürkert Communicator enables: Configuration, parametrisation and diagnosis of EDIP devices / networks Switching between defined gases Easy and comfortable mapping of cyclic values Graphic display, monitoring and storage of process values Firmware update of the connected EDIP devices Saving and restoring device configurations Zero-point adjustment in case of changed ambient conditions Guided re-calibration routine

25 | 26Visit product website  8.2. Connecting Type 8745 with the Bürkert Communicator software The Bürkert Communicator interface is based on CANopen. The appropriate bus termination is mandatory. Activate the termination resistor switch on the büS stick. The connection is established via the device’s micro USB socket (USB büS interface set 2 contains the necessary accessories). Please note: no external power supply must be connected to the micro USB socket. The device must be provided with power as described in chapter “5. Device / Process connections” on page 19 8.3. Configuration management for easy device replacement If a device needs to be replaced, the memory card can be removed from the defective device and inserted into the new one. This transfers all data of the device to be replaced to the new device. The memory card is available as an accessory and must be ordered separately (see “9.5. Ordering chart accessories” on page 26) In order to successfully exchange the device, it is necessary that both the new device and the device to be replaced possess the same device ID. 8.4. Web server for Industrial Ethernet variant All Industrial Ethernet-based devices (except for the EtherCAT® protocol) from software version A.13.00.00 dispose of an integrated web 9. Ordering information 9.1. Bürkert eShop Bürkert eShop – Easy ordering and quick delivery You want to find your desired Bürkert product or spare part quickly and order directly? Our online shop is available for you 24/7. Sign up and enjoy all the benefits. Order online now 9.2. Recommendation regarding product selection Note: Use the Product Enquiry Form (see “9.4. Bürkert Product Enquiry Form” on page 26 ) for the device details and send it to us once completed. For the proper choice of the actuator orifice within the MFC, you need to know not only the required maximum flow rate QN but also the pressure values directly before and after the MFC (p1, p2) at QN. In general, these pressures are not the same as the overall inlet and outlet pressures of the whole plant, because usually, additional flow resistors (tubing, additional shut-off valves, nozzles etc.) are present both before and after the MFC. Please use the Product Enquiry Form to indicate the pressures directly before and after the MFC. If these are unknown or not accessible to measurement, estimates are to be made by taking into account the approximate pressure drops over the flow resistors before and after the MFC, at QN flow rate. In addition, please quote the maximum inlet pressure p1 max to be encountered. This data is needed to make sure the actuator is able to provide a close-tight function within all the specified modes of operation.

26 | 26Visit product website  9.3. Bürkert product filter Bürkert product filter – Get quickly to the right product You want to select products comfortably based on your technical requirements? Use the Bürkert product filter and find suitable articles for your application quickly and easily. Try out our product filter 9.4. Bürkert Product Enquiry Form Bürkert Product Enquiry Form – Your enquiry quickly and compactly Would you like to make a specific product enquiry based on your technical requirements? Use our Product Enquiry Form for this purpose. There you will find all the relevant information for your Bürkert contact. This will enable us to provide you with the best possible advice. Fill out the form now 9.5. Ordering chart accessories Description Article no. General accessories USB büS interface set 2 (Type 8923) for connection to the Bürkert Communicator software: including büS stick, connection cable to M12 plug, M12 connection cable on micro USB for the büS service interface and Y-distributor, cable length: 0.7 m 772551 Power supply unit Phoenix Class2 (Type 1573), 85…240 V AC/24 V DC, 1.25 A, NEC Class 2 (UL 1310) 772438 Power supply unit for standard rail (Type 1573), 100…240 V AC/24 V DC, 1 A, NEC Class 2 (UL 1310) 772361 Power supply unit for standard rail (Type 1573), 100…240 V AC/24 V DC, 2 A, NEC Class 2 (UL 1310) 772362 Power supply unit for standard rail (Type 1573), 100…V AC/24 V DC, 4 A 772363 Memory card On request Device description files for software interfaces Download from Type 8745 Bürkert Communicator software Download from Type 8920 For Type

8745 Analogue

Terminal block 6-pin (standard for Type 8745, included in delivery of the corresponding analogue variant) On request Connector cable D-Sub 9 to leads, 5 m 580882 Connector cable D-Sub 9 to leads, 10 m 580883