Type 8745

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Table of contents

1. General technical data

4

1.1.

General.............................................................................................................................................................................................4

1.2.

Variant with electromagnetic proportional valve..............................................................................................................................4

1.3.

Variant with electromotive proportional valve ..................................................................................................................................5

2. Approvals and conformities

6

2.1.

General notes...................................................................................................................................................................................6

2.2.

Conformity .......................................................................................................................................................................................6

2.3.

Standards.........................................................................................................................................................................................6

2.4.

North America (USA/Canada) ..........................................................................................................................................................6

2.5.

Foods and beverages/Hygiene ........................................................................................................................................................6

2.6.

Oxygen.............................................................................................................................................................................................6

3. Materials

7

3.1.

Bürkert resistApp .............................................................................................................................................................................7

4. Dimensions

7

4.1.

Thread depths of base blocks .........................................................................................................................................................7

MFC/MFM for small nominal flow rates...........................................................................................................................................7

MFC/MFM for large and very large nominal flow rates....................................................................................................................7

4.2.

Variant with electromagnetic proportional valve..............................................................................................................................8

MFC with valve Type 2873...............................................................................................................................................................8

MFC with valve Type 2875...............................................................................................................................................................9

MFC with valve Type 2836.............................................................................................................................................................10

4.3.

Variant with electromotive proportional valve ................................................................................................................................13

MFC with valve Type 3280.............................................................................................................................................................13

MFC with valve Type 3285 (DN12 and DN15)................................................................................................................................15

MFC with valve Type 3285 (DN20 and DN25)................................................................................................................................16

4.4.

MFM variant ...................................................................................................................................................................................17

Variant with base block 00 or A1 for small nominal flow rates ......................................................................................................17

Variant with base block A2 for large nominal flow rates ................................................................................................................17

Variant with base block A3 for very large nominal flow rates ........................................................................................................18

5. Device / Process connections

19

5.1.

Industrial Ethernet..........................................................................................................................................................................19

5.2.

Analogue ........................................................................................................................................................................................20

5.3.

Modbus RTU..................................................................................................................................................................................21

6. Performance specifications

22

6.1.

MFM pressure loss diagram ..........................................................................................................................................................22

6.2.

Nominal flow range of typical gases ..............................................................................................................................................22

6.3.

Derating diagram for electromotive variants..................................................................................................................................23

7. Product operation

23

7.1.

Measuring principle........................................................................................................................................................................23

8. Product accessories

24

8.1.

Bürkert Communicator software....................................................................................................................................................24

8.2.

Connecting Type 8745 with the Bürkert Communicator software.................................................................................................25

8.3.

Configuration management for easy device replacement .............................................................................................................25

8.4.

Web server for Industrial Ethernet variant......................................................................................................................................25

9. Ordering information

25