Baumer ATEX Guideline V1.40 1/25 Baumer
27.07.20 Peter Fend (non-confidential) Frauenfeld, Switzerland
Baumer Explosion Protection Guideline
Scope
This document contains recommendations for ATEX installations of suitable Baumer sensors. The
information given must not be understood as a specification and Baumer does not assume any responsibility
for the information provided.
Baumer ATEX Guideline V1.40 2/25 Baumer
27.07.20 Peter Fend (non-confidential) Frauenfeld, Switzerland
Contents
1 Protection concepts used by Baumer ........................................................................................ 3
1.1 Intrinsic safety (Ex i) ....................................................................................................................... 3
1.2 Tight enclosure (Ex t) ...................................................................................................................... 4
1.3 Non-sparking (Ex nA) ..................................................................................................................... 4
2 Product specifics .......................................................................................................................... 5
2.1 General ........................................................................................................................................... 5
2.2 Temperature sensors ...................................................................................................................... 5
2.2.1 Passive Pt100 sensors (simple apparatus) .................................................................................... 5
2.2.2 Temperature transmitters ................................................................................................................ 5
2.3 Pressure sensors ............................................................................................................................ 5
2.4 Point level switches ........................................................................................................................ 5
2.4.1 General CleverLevel installation constraints .................................................................................. 5
2.4.2 LFFS ............................................................................................................................................... 6
2.4.3 LBFS ............................................................................................................................................... 6
2.4.4 LBFH/I ............................................................................................................................................. 6
2.5 Inductive proximity switches IFRM ##X... ....................................................................................... 6
2.6 FlexProgrammer 9701 .................................................................................................................... 7
3 Barrier and isolator selection for intrinsic safety (Ex i) installations ..................................... 7
3.1 Quick application finder .................................................................................................................. 7
3.2 Intrinsic safety installation concepts ............................................................................................... 7
3.2.1 Analog 2-wire current loop sensor .................................................................................................. 7
3.2.2 Analog 2-wire current loop sensor with relays ................................................................................ 8
3.2.3 Switching sensor with single PNP output ....................................................................................... 9
3.2.4 Switching sensor with single push-pull output ................................................................................ 9
3.2.5 Switching sensor with two PNP outputs ....................................................................................... 10
3.2.6 Switching sensor with two push-pull outputs ................................................................................ 11
3.2.7 Switching sensor with NAMUR interface ...................................................................................... 11
3.3 Reference for barrier and isolator models .................................................................................... 12
3.4 Intrinsic safety check .................................................................................................................... 14
3.4.1 B28RD100 .................................................................................................................................... 14
3.4.2 BISOSW1 ..................................................................................................................................... 16
3.4.3 B30RS075 .................................................................................................................................... 17
3.4.4 BNAMUR1 .................................................................................................................................... 18
4 Appendix ..................................................................................................................................... 19
4.1 Flowchart for associated apparatus selection .............................................................................. 19
4.1.1 Point level switches ...................................................................................................................... 19
4.1.2 Temperature sensors .................................................................................................................... 20
4.1.3 Pressure sensors .......................................................................................................................... 21
4.1.4 Inductive proximity switches ......................................................................................................... 22
4.2 Considerations for fail-safe operation ........................................................................................... 23
4.3 Marking overview for ATEX and IECEx used for Baumer products ............................................. 24
4.4 List of figures ................................................................................................................................ 25
4.5 Documentation history .................................................................................................................. 25