8750

8750 BURKERT | Alldatasheet

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Visit product website  DATA SHEET Type 6281  Servo-assisted 2/2 way diaphragm valve Type 2100  Pneumatically operat- ed 2/2-way angle seat valve ELEMENT for de- centralized automation Type 8805  Ball valve / Butterfly valve with pneumatic rotary actuator Type 8653  AirLINE Field - the valve island optimised for process automation Type 8746  Mass flow controller (MFC) / Mass flow me- ter (MFM) for gases Type 8400  Screw-in temperature threshold detector/ transmitter with display 1000089368 | Standard | EU | en | 202111 | 11 Flow rate controller for gases

• Reliable and aut omated flow control on site S table control of the set point, independent on pressure fluctuations P rogrammable alarm functions (pressure monitoring) Simple star t-up by manual setpoint setting and display L eckage air compensation programmable for dense phase conveying systems The flow rate controller type 8750 represents a closed flow control loop to measure and control gases using the differential pressure principle. The relia- ble and robust system consists of an ELEMENT control valve, type 2301, the compact process controller type 8693 put on top of the valve and two pres- sure transmitters, type 8325. The Bürkert flow rate controller does not need a separate flow meter. The valve seat serves as variable orifice. From the pressure difference across the valve and the given density and temperature a volume flow, referring to the conditions programmed, can be calculated. For that the process controller uses the flow characteristics of the valve and the scales of the pressure transmitters programmed. The volume flow set can then be adjusted by changing the stroke of the control valve. The flow rate controller offers a high repeatability and large measuring range. Beneficial is that the control itself is used for both, controling the flow and measuring over an orifice. With the variable orifice of the control valve the measurement range is increased significantly. Low assembly costs and easy commissioning are further advantages of this unique product. Product variants described in the data sheet may differ from the product presentation and description. Type descriptionCan be combined with Type 8750 © Christian Bürkert GmbH & Co. KG, Subject to alteration

2 | 14 Visit product website  Table of contents 1. Gener al technical data 3 Materials 2.2. Mat erial specifications ELEMENT version, actuator M (70 mm), N (90 mm), P (130 mm) CLASSIC version, actuator L (225 mm) Standard pressure transmitter 3. Approvals 5 Dimensions 4.2. Connection flange 5. Performance specifications 8 Flow characteristics of the control valve Type 2301 Overview of fluidic data for flow under seat 6. P roduct operation 9 7. P roduct installation 9 7.2. Electrical connections PROFIBUS DP 8. Or dering information 11 8.2. Recommendation r egarding product selection 8.3. Bürk ert product filter 8.4. Or dering chart for flange 8.5. Or dering chart accessories

3 | 14 Visit product website  1. Gener al technical data Product properties Dimensions Detailed information can be found in chapter “4. Dimensions” on page 6. Materials Detailed information can be found in chapter “2. Materials” on page 4. Design Globe control valve with integrated flow measurement and control Nominal diameter DN 15…DN 100 Port connection Flange according to DIN EN 1092 1, ANSI B 16.5 or JIS 10K Safety setting in case of power failur e Closed (Control function A) Flow direction Against closing direction (under seat) Performance data Operating pressure Valve: 0 bar(g)…16 bar(g) Nominal pressure (max.) PN 25 (DIN EN 1333), Class 150 (DIN EN 1759) Pilot pressure 5.5…7 bar (actuator M, N, P, see “ELEMENT version, actuator M (70 mm), N (90 mm), P (130 mm)” on page 5…6 bar (actuator L, see “CLASSIC version, actuator L (225 mm)” on page Optional on request: version for reduced control pressure from 3.5 bar Seat leakage acc. to DIN EN 60534 L eakage class VI for PTFE (soft sealing) KVS values 2.1 m³/h…140 m³/h, see “5.1. Fluidic data” on page 8 Operating characteristic Linear or equal percentage Theoretical range ability Up to 50:1 Flow rate measurement Measured variable Volume flow, reference conditions programmable Measuring principle Differential pressure via orifice plate and pressure transmitter on the inlet and outlet side of the orifice plate Pressure measurement ranges 0…100 mbar to 0…16 bar Pressure measuring principle Piezoresistive Pressure measuring error ≤ 0.5 % of full scale Electrical data Oper ating voltage 24 V DC ± Max. r esidual ripple 10 Electrical connection Oper ating voltage: circular connector M12x1, 4 pin Analogue input/output signals (for setpoint and actual value): circular connector M12x1, 8 pin Additionally for Bus communication: M12x1, 5 pin Internal signals (for connecting the pressure transmitters): circular connector M8x1, 4 pin Communication/signal interface Analogue (4…20 mA, 0…10 V) or digital (PROFIBUS DP) Medium data Medium Air, oxygen, nitrogen, carbon dioxide, neutral gases, fuel gases Medium temperature - 10…80 Contr ol medium Air or neutral gases acc. to DIN ISO 8573 1: dust Cl. 7 (< 40 µm), par ticle density Cl. 5 (< 10 mg/m³), pr essure dew point Cl. 3 (≤ °C), oil conc. Cl. X (< 25 mg/m³) P rocess/Port connection & communication Pilot air ports Threaded connection G ⅛, stainless steel Approvals and certificates Approval Explosion protection: ATEX for zone 3G on request Conformity Materials in contact with medium conform to EG1935/2004 and FDA Oxygen conformity for DN 15 (up to + °C) on r equest Fuel gases (seals according to EN549) Certificate 2.2 or 3.1 certificate on request Environment and installation Ambient temperature 0…55 Degr ee of protection IP65 / IP67 acc. to EN 60529

4 | 14 Visit product website  2. Mat erials 2.1. Chemical Resistance Char t – Bürkert resistApp Bürkert resistApp – Chemical Resistance Chart You want to ensure the reliability and durability of the materials in your individual application case? V erify your combination of media and materials on our website or in our resistApp. Start Chemical Resistance Check 2.2. Mat erial specifications ELEMENT version, actuator M (70 mm), N (90 mm), P (130 mm) No. Element Material

1 Pilot air ports Push-in connector PP

2 Actuator PPS

3 Cover Stainless steel 1.4561 (316Ti)

4 Piston seal FKM

5 Spring Stainless steel 1.4310 6 Pipe Stainless steel 1.4401 (316)

7 Spindle sealing PTFE V-Rings (filled), with spring compensa-

8 Spindle Stainless steel 1.4401 (316)/1.4404 (316L) 9 Spindle guide Stainless steel 1.4404 (316L), PTFE filled

10 Body seal Graphite or PTFE

11 Control cone Stainless steel 1.4571 12 Spring straight pin Stainless steel 1.4310

13 Seat seal PTFE

14 Valve seat with O-Ring Stainless steel 1.4571, EPDM

15 Valve body Stainless steel CF3M (316L)

– Pipe for inlet and outlet section1.) Stainless steel 1.4404 / 1.4435 – Pressure sensor sleeve1.) Stainless steel 1.4404 – Connection flange1.) Stainless steel 1.4404 (316L) 1.) Not shown in the drawing.

5 | 14 Visit product website  CLASSIC version, actuator L (225 mm) 9 10 1211 No. Element Material 1 Adapter Stainless steel 1.4305

2 Actuator Polyamide (PA)

3 Pilot air ports Stainless steel 1.4305

4 Spindle sealing PTFE V-Rings (filled), with spring compensa-

5 Spring Stainless steel 1.4568 6 Nipple Stainless steel 1.4404

7 Body seal Graphite or PTFE

8 Spindle Stainless steel 1.4404 9 Control cone Stainless steel 1.4571 10 Spring straight pin Stainless steel 1.4310

11 Seat seal PTFE

12 Valve seat with O-Ring Stainless steel 1.4571, EPDM

13 Valve body Stainless steel CF3M (316L)

– Pipe for inlet and outlet section1.) Stainless steel 1.4404 / 1.4435 – Pressure sensor sleeve1.) Stainless steel 1.4404 – Connection flange1.) Stainless steel 1.4404 (316L) 1.) Not shown in the drawing. Standard pressure transmitter Description Material Non-wetted parts Body standard version Stainless steel 1.4571 (316Ti) Wetted parts Standard version < 0.4 bar S tainless steel 1.4571 (316Ti) Standard version ≥ 0.4 bar S tainless steel 1.4404 (316L) (for ≤ 10 bar S tainless steel 1.4534 (13

8 PH) (for >

10 bar) Flush diaphr agm version (standard) Stainless steel 1.4571 (316Ti), FKM seal 3. Appr ovals Note: All approvals or conformities are not included in a standard unit and must be requested separately. Approval Description Conformity of all materials in contact with the medium EC regulation 1935/2004 FDA – Code of Federal Regulations Title 21 Paragraph 177 (CFR 21 177.2600) Oxygen Suitable for use with gaseous oxygen for medium temperature up to 60 °C and oper ating pressure up to 16 bar(g) (option), manufacturer’s declaration possible for DN 15 Explosion proof Ex-marking of the components according to the following table Fuel gases Valve seals conform to EN549 (elastomers for gas appliances), suitable for medium temperature 0 °C…60 °C, ambient t emperature - 10…60 °C and oper ating pressures 0…16 bar(g) (option) Unit Ex marking of the component Valve Type 2301 EPS 18 ATEX 2 008 X / IECEx EPS 18.0007 X mech. Ex h IIC T4 Gb / Ex h IIIC T135 °C Db Contr ol unit Type 8693 ATEX II 3G Ex ec IIC T4 Gc, II 3D Ex tc IIIC T135° Dc Pressure transmitter IECEx + ATEX II 3G Ex nA IIC T4/T5/T6 Gc X, II 3D Ex tc IIIC T90 °C Dc C able sockets for pressure transmitter connection on the control unit ATEX II 2G Ex eb IIC T5 Gb

6 | 14 Visit product website  4. Dimensions 4.1. Over all device Note: Dimensions in mm A 2 x DN 6 x DN H DN (pipe connection) Actuat or size Ø A H [mm] [mm] 15 Ø70 (M) ELEMENT 91 383 25 Ø70 (M) ELEMENT 91 392 40 Ø90 (N) ELEMENT 120 478 50 Ø130 (P) ELEMENT 159 536 65 Ø130 (P) ELEMENT 159 590 80 Ø130 (P) ELEMENT 159 598 Ø225 (L) CLASSIC 261 640 100 Ø130 (P) ELEMENT 159 608 Ø225 (L) CLASSIC 261 650

7 | 14 Visit product website  4.2. Connection flange Note: Dimensions in mm AF LF DF BF MF A x a β D Nominal diamet er (pipe) DIN EN 1092 PN 25 JIS 10K DN Ø DF LF Ø BF AF Ø D A x α Ø MF Ø DF LF Ø BF AF Ø D A x α Ø MF 15 95 300 65 16 14 4 x 90° 18.1 95 300 70 12 15 4 x 90° 18.1 25 115 500 85 18 14 4 x 90° 29.7 125 500 90 14 19 4 x 90° 29.7 40 150 700 110 18 18 4 x 90° 44.3 140 700 105 16 19 4 x 90° 44.3 50 165 800 125 20 18 4 x 90° 56.3 155 800 120 16 19 4 x 90° 56.3 65 185 1000 145 22 18 8 x 45° 66.0 175 1000 140 18 19 4 x 90° 71.5 80 200 1200 160 24 18 8 x 45° 81.0 185 1200 150 18 19 8 x 45° 84.3 100 235 1400 190 24 22 8 x 45° 100.0 292 1400 175 18 19 8 x 45° 109.1 Nominal diamet er (pipe) ANSI B 16.5 Class 150 NPS Ø DF LF Ø BF AF Ø D A x α Ø MF ½" (DN 15) 89 300 60.5 11.2 15.7 4 x 90° 15.7 1" (DN 25) 108 500 79.2 14.2 15.7 4 x 90° 26.7 1½" (DN 40) 127 700 98.6 17.5 15.7 4 x 90° 40.9 2" (DN 50) 152 800 120.7 19.1 19.1 4 x 90° 52.6 2½" (DN 65) 178 1000 139.7 22.3 19.1 4 x 90° 62.7 3" (DN 80) 190 1200 152.5 23.9 19.1 4 x 90° 78.0 4" (DN 100) 229 1400 190.5 23.9 19.1 8 x 45° 102.4

8 | 14 Visit product website  5. P erformance specifications 5.1. Fluidic data Flow characteristics of the control valve Type 2301 KV value [m3/h] and flow characteristic according to DIN EN 60534 - 2 - 4 KVS shows the maximum adjustable flow capacity of a control valve series. The KV value [m3/h] is measured in accordance with DIN EN 60534 3 with wat er (5…40 ºC) and a pressure drop of 1 bar across the valve. 100 0 10 20 30 40 50 60 70 80 90 100 KV/KVS [%] Ventilhub [%] Equal percentage characteristics - detailed k V values see below. Overview of fluidic data for flow under seat Not We will be happy to design the appropriate valve size of the fluid quantity regulator for you. Please provide us with your valve design data using the last page of this data sheet. Nominal diame- ter (pipe) Seat size Actuator size KV value at stroke [m3/h] KVS value DN NPS 5 % 10 % 30 % 50 % 70 % 90 % [m3/h]

9 | 14 Visit product website  Nominal diame- ter (pipe) Seat size Actuator size KV value at stroke [m3/h] KVS value DN NPS 5 % 10 % 30 % 50 % 70 % 90 % [m3/h] 80 130 (P) 2.5 3.4 10.7 27.0 58 87 100 80 130 (P) 2.2 3.1 10.3 30.0 66 97 110 100 130 (P) 3.8 5.2 15.0 46.5 90 128 140 225 (L) 3.2 3.9 9.0 20.5 51 118 140 6. P roduct operation 6.1. Flow measur ement principle The valve seat of the control valve represents a variable orifice. By measuring the pressure upstream and downstream of this orifice and a programmed flow characteristic of the corresponding valve, the current flow rate can be determined. This is compared with the flow setpoint transmitted to the unit. In the event of a control deviation, the valve and thus the orifice are adjusted exactly so that the setpoint and actual value match. To determine the flow rate, the density of the gas and the reference conditions, among other things, must be set in the controller during commissioning. The temperature of gas that is usually present is also permanently programmed in. The control parameters of the PI controller must also be determined and set during commissioning. If the outlet pressure fluctu- ates, the unit automatically reacts to this by detecting a control deviation between the setpoint and actual value and adjusting the valve so that this disappears. 7. P roduct installation 7.1. P iping upstream of the fluid flow regulator For high accuracy, the inlet distances upstream of the fluid quantity regulator must be observed in accordance with EN ISO 5167 - 1. The outlet section downstr eam of the valve is already integrated in the system. Depending on the installation situation, an inlet dis- tance corresponding to 15…20 times the pipe diameter is recommended.

10 | 14 Visit product website  7.2. Electrical connections Multipole connection Circular plug M12, 8 pin Input signals from the control center Output signals from the control center Connection with 24 V DC circular plug-in connector Circular plug M8, 4 pin Pressure sensor P1, P2 Circular plug M12, 4 pin Operating voltage 2 4 12 3 2 Circular plug M12, 8 pin P in Wire colour1.) Assignment Set-point value, digital input

8 Red Set-point value + (0/4…20 mA / 0…5/10 V)

7 Blue Set-point value GND

1 White Digital input +

6 Pink Analogue position feedback +

5 Grey Analogue position feedback GND

4 Yellow Digital output 1

3 Green Digital output 2

2 Brown Digital outputs GND

1.) The colours indicated refer to the connection cable (919267) available as an accessory. Circular plug M8, 4 pin (pressure sensor) P in Wire colour Assignment Set-point value, digital input

1 Brown +

24 V pr

essure sensor power supply

2 White 4…20 mA output from pressure sensor

Circular plug M12, 4 pin (operating voltage) P in Wire colour1.) Assignment Set-point value, digital input

1 Brown Operating voltage +

24 V DC

3 Blue Oper

1.) The colours indicated refer to the connection cable (919267) available as an accessory.

11 | 14 Visit product website  PROFIBUS DP Circular plug M12, 4 pin Operating voltage Socket M12, 5 pin (inversely coded) (PROFIBUS DP) Circular plug M12, 5 pin (inversely coded) (PROFIBUS DP) TE connection Socket/circular plug M12, 5 pin - Fieldbus connection Pin Configuration

1 VP+

2 RxD/TxD-N

3 DGND

4 RxD/TxD-P

5 Not connect

Thread Shield/protective earth Circular plug M12, 4 pin operating voltage Pin Wire colour 1.) Configuration

3 Blue GND

1.) The wire colours indicated refer to the connection cable available as an accessory with the Article no. 918038. 8. Or dering information 8.1. Bürk ert eShop – Easy ordering and quick delivery Bürkert eShop – Easy ordering and fast delivery You want to find your desired Bürkert product or spare part quickly and order dir ectly? Our online shop is available for you 24/7. Sign up and enjoy all the benefits. Order online now

12 | 14 Visit product website  8.2. Recommendation r egarding product selection Note: For optimal sizing of the actuator in the fluid quantity regulator (nominal valve size), the pressure values immediately upstream and downstream of the fluid quantity regulator (p 1, p2) at this flow rate QNom should be known in addition to the required maximum flow rate QNom. These are generally not identical with the inlet and outlet pressure of the entire system, because additional flow resistances (pipes, additional shut-off valves, nozzles, etc.) are usually present both upstream and downstream of the fluid quantity regulator. In the product questionnaire form at the end of the document, the pressure values, immediately upstream and downstream of the fluid volume regulator, must always be stated. If these are not known or accessible by measurement, an estimation, taking into account the appr oximate pressure drops across the flow resistances upstream and downstream of the fluid quantity regulator at QNom, is necessary. The specification of the maximum expected inlet pressure p1 max. is necessary to ensure the tight-closing func- tion of the actuator in all operating conditions. 8.3. Bürk ert product filter Bürkert product filter – Get quickly to the right product Y ou 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 8.4. Or dering chart for flange Note: Flange acc. t o DIN EN 1092 1 with PTFE valve seat seal F or the design of the fluid flow controller, please request advice. Please contact your local sales centre. Please also use the prod- uct enquiry form at the end of this data sheet. Connection and seat size Actuator size KVS value Pressure range Air volume1.) at p1 = 6 and p2 = 3 bar(g) Ar ticle no. Qmax Qmin [m3/h] [bar(ü)] [Nm3/h] [Nm3/h] DN 15 M (70 mm) 4.3 0…10 350 20 280436  DN 25 M (70 mm) 12.0 0…10 900 40 280437  DN 40 N (90 mm) 17.5 0…10 1300 70 280438  DN 50 P (130 mm) 37.0 0…10 2900 120 280439  DN 65 P (130 mm) 65.0 0…10 5500 200 280440  DN 80 P (130 mm) 100 0…10 8500 350 280441  DN 100 P (130 mm) 140 0…6 12000 500 280442  1.) F or reference, the air volume ranges are listed at a typical inlet pressure of 6 bar(g). The values refer to air at a temperature of 20 ºC. The ranges apply to the valve position range of 10 %...90 Further versions on request Additional Specific pr essure ranges Alt ernative seat seals Reduced contr ol pressure from 3.5 bar

13 | 14 Visit product website  8.5. Or dering chart accessories Note: Spare parts for the valve seat and control cone can be ordered in the form of spare parts sets. Please refer to the operating instruc- tions for the appropriate Article no. Description Article no. M12 socket, 8 pin with 5 m cable 919267  M12 socket, 4 pin with 5 m cable 918038  Communication adapter for connection to a computer, incl. extension cable 227093  Silencer G ⅛ for the control air outlet 780779 

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Flow rate controller for gases 1 | 2Visit this product area on the website  © Christian Bürkert GmbH & Co. KG, subject to change Product Enquiry Form - Flow rate controller for gases Thank you for your interest in our products! In order to provide you with optimum advice, please fill out the following form and send it to your Bürkert representative or e-mail address: info@burkert.com. All information submitted will of course be kept strictly confidential. Please fill in the required fields! * *Note: The interactive functions of this PDF may be restricted depending on the PDF reader used. Personal Information Company Contact person Customer no. Department Street Postcode / Town Telephone no. Email Delivery Quantity Requir ed delivery date Operating data Function (Function of the control valve in the process / process description) Pipeline DN PN Oper ating medium Type of medium Fluidic data Largest flow rate 1. Operating point Average flow rate 2. Oper ating point Lowest flow rate 3. Operating point Unit Flow rate Temperature T1 Inlet pressure p1 absolut e (a) r elative (g) Outlet pressure p2 absolut e (a) r elative (g) Viscosity Density (ρ) Max. permitted sonic pressure level (Lp) Valve body Port connection (flange) DIN EN 1092-1 ANSI B16.5 JIS 10K others Electrical data Control / Communication Note: Please choose one of the following options! Analog Digital 0…5 V P rofibus-DP 0…10 V 0…20 mA 4…20 mA

Flow rate controller for gases 2 | 2Visit this product area on the website  © Christian Bürkert GmbH & Co. KG, subject to change Approvals / Conformities F or use with food (compliant with EC Regulation 1935/2004) FD A conformity Ex-marking of the components of the flow r ate controller (for more information see data sheet) EN549 compliant elast omers for gas appliances Cer tificate for the fulfilment of the order EN-ISO 10204 2.1 (Article no. 440788) T est report EN-ISO 10204 2.2 (Article no. 803722) Cer tificate of conformity for raw material EN-ISO 10204 3.1 Additional Requirements / Comment