Ingeniero

Sensors for
handling and
processing
technology
Proximity sensors
Textbook FP 1110

093046 EN

Order No.:
Description:
Designation:
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093046
NAEH-SCH.LHRBCH
D:LB-FP1110-EN
09/2003
Frank Ebel, Siegfried Nestel
Barbara Böhland, Frank Ebel
04.09.2003, Beatrice Huber

© Festo Didactic GmbH & Co. KG, 73770 Denkendorf/Germany, 2003Internet: www.festo.com/didactic
E-mail: did@festo.com
The copying, distribution and utilization of this document as well as the
communication of its contents to others without expressed authorization is
prohibited. Offenders will be held liable for the payment of damages. All rights
reserved, in particular the right to carry out patent, utility model or ornamental
design registration.Contents

Notes on the layout of this book _________________________________________ 7
1.
1.1
1.2
1.2.1
1.2.2
1.2.3
1.2.4
1.3
1.4
1.4.1
1.4.2
1.5
1.5.1
1.5.2
1.6

General notes ________________________________________________
The importance of sensor technology _____________________________
Terms _______________________________________________________
Sensor______________________________________________________
Sensor component_____________________________________________
Sensor system ________________________________________________
Multi-sensor system ___________________________________________
Typical output signals of sensors _________________________________
Binary and analogue sensors ____________________________________
Binary sensors________________________________________________
Analogue sensors _____________________________________________
Proximity sensors _____________________________________________
Overview of position sensors ____________________________________
Operating voltages ____________________________________________
Fields of application for proximity sensors__________________________

11
11
11
11
12
12
13
1315
15
15
16
17
18
18

2.
2.1
2.1.1
2.1.2
2.1.3
2.1.4
2.2
2.2.1
2.2.2
2.2.3
2.2.4
2.3

Mechanical position switches ___________________________________
Electro-mechanical position switches _____________________________
Function description ___________________________________________
Technical characteristics ________________________________________
Notes on installation___________________________________________
Examples of application ________________________________________
Mechanical-pneumatic position switches __________________________
Function description ___________________________________________
Technical characteristics ________________________________________
Notes on application ___________________________________________
Examples ofapplication ________________________________________
Exercises ____________________________________________________

25
25
25
26
28
30
31
31
32
32
32
33

© Festo Didactic GmbH & Co. KG • FP 1110

3

Contents

3.
3.1
3.1.1
3.1.2
3.1.3
3.1.4
3.2
3.2.1
3.2.2
3.2.3
3.2.4
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.4

35
35
35
36
38
40
42
42
43
44
45
45
45
46
46
4647

4.
4.1
4.2
4.3
4.4
4.5

Inductive proximity sensors _____________________________________
Function description ___________________________________________
Technical characteristics ________________________________________
Notes on application ___________________________________________
Examples of application ________________________________________
Exercises____________________________________________________

49
49
52
53
55
58

5.
5.1
5.2
5.3
5.3.1
5.4
5.5

4

Magnetic proximity sensors_____________________________________
Reed proximity sensors _________________________________________
Function description ___________________________________________
Technical characteristics ________________________________________
Notes on application...