Type 8742

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Table of contents

1. General technical data

4

2. Approvals and conformities

5

2.1.

General notes...................................................................................................................................................................................5

2.2.

Conformity .......................................................................................................................................................................................5

2.3.

Standards.........................................................................................................................................................................................5

2.4.

Explosion protection ........................................................................................................................................................................5

2.5.

North America (USA/Canada) ..........................................................................................................................................................5

2.6.

Foods and beverages/Hygiene ........................................................................................................................................................5

2.7.

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

3. Materials

6

3.1.

Bürkert resistApp .............................................................................................................................................................................6

4. Dimensions

6

4.1.

Thread depths of base blocks .........................................................................................................................................................6

MFC/MFM for small nominal flow rates...........................................................................................................................................6

MFC/MFM for large nominal flow rates ...........................................................................................................................................6

4.2.

Variant with büS/CANopen interface ...............................................................................................................................................7

MFC with valve Type 2871...............................................................................................................................................................7

MFC with valve Type 2873...............................................................................................................................................................9

MFC with valve Type 2875.............................................................................................................................................................10

MFM variant ...................................................................................................................................................................................11

4.3.

Variant with analogue or PROFIBUS-DP interface ........................................................................................................................13

MFC with valve Type 2871.............................................................................................................................................................13

MFC with valve Type 2873.............................................................................................................................................................15

MFC with valve Type 2875.............................................................................................................................................................16

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

4.4.

Variant with Industrial Ethernet interface .......................................................................................................................................20

5. Device / Process connections

21

5.1.

büS/CANopen................................................................................................................................................................................21

5.2.

Analogue ........................................................................................................................................................................................21

5.3.

Industrial Ethernet..........................................................................................................................................................................21

5.4.

PROFIBUS-DP...............................................................................................................................................................................22

6. Performance specifications

23

6.1.

MFM pressure loss diagram ..........................................................................................................................................................23

6.2.

Nominal flow range of typical gases ..............................................................................................................................................23

7. Product operation

24

7.1.

Measuring principle........................................................................................................................................................................24

8. Product design and assembly

24

8.1.

Measures to comply with ATEX requirements ...............................................................................................................................24

9. Product accessories

25

9.1.

Bürkert Communicator software....................................................................................................................................................25

9.2.

Connecting Type 8742 with the Bürkert Communicator software.................................................................................................26

9.3.

Configuration management for easy device replacement .............................................................................................................26

9.4.

Web server for Industrial Ethernet variant......................................................................................................................................26