Proximity sensors. Inductive. Connection. magnetic. Festo Didactic Training and Consulting Sensors
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1 Proximity sensors Optical Throughbeam Inductiv e Capacitive Optical Retro- reflective Reed switch Symbols Optical - Diffuse Inductive magnetic Connection No. 1 / 91
2 Optical sensors (Through-beam) Type : Through-beam No. 2 / 91
3 Optical sensors (Through-beam) Type : Through-beam Transmitter Receiver No. 3 / 91
4 Optical sensors (Through-beam) Type : Through-beam Transmitter Receiver No. 4 / 91
5 Optical sensors (Through-beam) Type : Through-beam Targ et Transmitter Receiver No. 5 / 91
6 Optical sensors (Through-beam) Type : Through-beam Transmitter Receiver No. 6 / 91
7 Optical sensors (Through-beam) Type : Through-beam Transmitter Receiver No. 7 / 91
8 Optical sensors (Through-beam) Type : Through-beam Transmitter Receiver No. 8 / 91
9 Optical sensors (Through-beam) Type : Through-beam Transmitter Receiver No. 9 / 91
10 Optical sensors (Through-beam) Type : Through-beam Transmitter Receiver No. 10 / 91
11 Optical sensors (Through-beam) Type : Through-beam Transmitter Receiver No. 11 / 91
12 Optical sensors (Through-beam) Type : Through-beam Transmitter Receiver No. 12 / 91
13 Optical sensors (Through-beam) Type : Through-beam Transmitter Receiver No. 13 / 91
14 Optical sensors (Through-beam) Type : Through-beam Targ et Transmitter Receiver Long sensing distance: up to 30 metres with some devices Will detect all but very transparent materials Must be accurately aligned No. 14 / 91
15 Optical sensors (Retro-reflective) No. 15 / 91
16 Optical sensors (Retro-reflective) Type : Retro reflective Transmitter /Receiver T R Reflector (prismatic ) No. 16 / 91
17 Optical sensors (Retro-reflective) Type : Retro reflective Transmitter /Receiver T R Reflector (prismatic) No. 17 / 91
18 Optical sensors (Retro-reflective) Type : Retro reflective Transmitter /Receiver T R Reflector (prismatic ) No. 18 / 91
19 Optical sensors (Retro-reflective) Type : Retro reflective Target Transmitter /Receiver T R Reflector (prismatic) No. 19 / 91
20 Optical sensors (Retro-reflective) Type : Retro reflective Transmitter /Receiver T R Reflector (prismatic) No. 20 / 91
21 Optical sensors (Retro-reflective) Type : Retro reflective Transmitter /Receiver T R Reflector (prismatic) No. 21 / 91
22 Optical sensors (Retro-reflective) Type : Retro reflective Transmitter /Receiver T R Reflector (prismatic) No. 22 / 91
23 Optical sensors (Retro-reflective) Type : Retro reflective Transmitter /Receiver T R Reflector (prismatic) No. 23 / 91
24 Optical sensors (Retro-reflective) Type : Retro reflective Transmitter /Receiver T R Reflector (prismatic) No. 24 / 91
25 Optical sensors (Retro-reflective) Type : Retro reflective Transmitter /Receiver T R Reflector (prismatic) No. 25 / 91
26 Optical sensors (Retro-reflective) Type : Retro reflective Transmitter /Receiver T R Sensing distance : 1/2 to 1/3 of through-beam type Not suitable for reflective or transparent targets Target should be larger than the reflector Reflector (prismatic) No. 26 / 91
27 Optical sensors (Diffuse) Type : Diffuse No. 27 / 91
28 Optical sensors (Diffuse) Type : Diffuse Target Transmitter /Receiver T R No. 28 / 91
29 Optical sensors (Diffuse) Type : Diffuse Transmitter /Receiver T R No. 29 / 91
30 Optical sensors (Diffuse) Type : Diffuse Transmitter /Receiver T R No. 30 / 91
31 Optical sensors (Diffuse) Type : Diffuse Transmitter /Receiver T R No. 31 / 91
32 Optical sensors (Diffuse) Type : Diffuse Transmitter /Receiver T R No. 32 / 91
33 Optical sensors (Diffuse) Type : Diffuse Transmitter /Receiver T R No. 33 / 91
34 Optical sensors (Diffuse) Type : Diffuse Transmitter /Receiver T R Sensing distance: much less than reflex type, actual distance depends on colour and reflective nature of the surface Larger targets result in longer sensing distances Not suitable for dirty environments No. 34 / 91
35 Inductive sensors No. 35 / 91
36 Inductive sensors High frequency magnetic field (300 to 800 khz) Active surface Resonant circuit coil LED indicator Connection cable No. 36 / 91
37 Inductive sensors Targ et Sensor Oscillation Amplitude Sensor output signal ON OFF No. 37 / 91
38 Target Inductive sensors Sensor Oscillation Amplitude Sensor output signal ON OFF No. 38 / 91
39 Target Inductive sensors Sensor Oscillation Amplitude Sensor output signal ON OFF No. 39 / 91
40 Target Inductive sensors Sensor Oscillation Amplitude Sensor output signal ON OFF No. 40 / 91
41 Target Inductive sensors Sensor Oscillation Amplitude Sensor output signal ON OFF No. 41 / 91
42 Target Inductive sensors Sensor Oscillation Amplitude Sensor output signal ON OFF No. 42 / 91
43 Target Inductive sensors Sensor Oscillation Amplitude Sensor output signal ON OFF No. 43 / 91
44 Target Inductive sensors Sensor Oscillation Amplitude Sensor output signal ON OFF No. 44 / 91
45 Target Inductive sensors Sensor Oscillation Amplitude Sensor output signal ON OFF No. 45 / 91
46 Inductive sensors Will detect any conductive material Quoted distances are for mild steel Sensor performance can be affected by: Temperature Target material Target dimensions No. 46 / 91
47 Reed switch No. 47 / 91
48 Reed switch Glass Tube filled with nitrogen Reed contacts LED indicator No. 48 / 91
49 Reed switch No. 49 / 91
50 Reed switch No. 50 / 91
51 Reed switch No. 51 / 91
52 Reed switch No. 52 / 91
53 Reed switch No. 53 / 91
54 Reed switch No. 54 / 91
55 Reed switch 24v No. 55 / 91
56 Reed switch 24v No. 56 / 91
57 Reed switch Interference from other magnetic fields must be avoided. If positioned in mid stroke, switching point will vary depending on direction of approach. Maximum current must be limited to avoid burning of the reed contacts No. 57 / 91
58 Inductive magnetic sensor No. 58 / 91
59 Inductive magnetic sensor Connection cable Resonant circuit coil High frequency magnetic field LED Indicator No. 59 / 91
60 Inductive magnetic sensor No. 60 / 91
61 Inductive magnetic sensor No. 61 / 91
62 Inductive magnetic sensor No. 62 / 91
63 Inductive magnetic sensor No. 63 / 91
64 Inductive magnetic sensor No. 64 / 91
65 Inductive magnetic sensor No. 65 / 91
66 Inductive magnetic sensor Inductive principle of operation - but only reacts to magnetic fields Interference from other magnetic fields must be avoided. Solid state device - higher switching frequency - 1kHz No. 66 / 91
67 Capacitive sensor No. 67 / 91
68 Capacitive sensor Sensor is looking for a change in capacitance in the active field Electrostatic field Active surface Active electrode Earth electrode LED indicator Adjusting screw Connection cable No. 68 / 91
69 Capacitive sensor Target No. 69 / 91
70 Capacitive sensor No. 70 / 91
71 Capacitive sensor No. 71 / 91
72 Capacitive sensor No. 72 / 91
73 Capacitive sensor Detects any material denser than air (as long as there is enough of it) Can be adjusted for sensitivity Can be affected by dusty environments No. 73 / 91
74 Capacitive sensor Sensor is adjusted so that t it does not see the wall of the vessel No. 74 / 91
75 Capacitive sensor As the level rises the fluid affects the sensor field No. 75 / 91
76 Capacitive sensor Until the sensor switches No. 76 / 91
77 Sensor symbols No. 77 / 91
78 Sensor symbols Inductive + 18 to 30 Volts DC. 0 V Output Capacitive Optic al Magneti c Ultrasoni c Normally open Normally closed No. 78 / 91
79 Sensor symbols Capacitive Sensor with Normally open function + 18 to 30 Volts DC. Output 0 V No. 79 / 91
80 Sensor connection No. 80 / 91
81 Sensor connection PNP Type Output is Positive Positive switching 24v DC + 18 to 30 Volts DC Output 0 V 0v No. 81 / 91
82 Sensor connection NPN Type Output switches through to 0v Negative switching 24v DC + 18 to 30 Volts DC Output 0 V 0v No. 82 / 91
83 Sensor connection No. 83 / 91
84 Sensor connection Inductive + 18 to 30 Volts DC. Output Capacitiv e Optic al Magnetic 0 V Ultrasoni c Normally open Normally closed No. 84 / 91
85 Inductive sensor Will detect any conductive material Quoted distances are for mild steel Sensor performance can be affected by:- Temperature Target material Target dimensions. Oscillation Amplitude Targ et Sensor Sensor output signal ON OF F No. 85 / 91
86 Capacitive sensor Detects any material denser than air. (as long as there is enough of it) Can be adjusted for sensitivity Can be affected by dusty environments No. 86 / 91
87 Optical sensors Type: Through-beam Long sensing distance : up to 30 metres with some devices Will detect all but very transparent materials Must be accurately aligned Target Transmitter Receiver No. 87 / 91
88 Optical sensors Type: Retro-reflective Sensing distance : 1 / 2 to 1 / 3 of through-beam type. Not suitable for reflective or transparent targets Target should be larger than the reflector T R Transmitter / Receiver Reflector (prismatic) No. 88 / 91
89 Optical sensors Type : Diffuse Sensing distance : much less than reflex type, actual distance depends on colour and reflective nature of the surface Larger targets result in longer sensing distances Not suitable for dirty environments T R Transmitter / Receiver No. 89 / 91
90 Reed switch Interference from other magnetic fields must be avoided. If positioned in mid stroke, switching point will vary depending on direction of approach. Maximum current must be limited to avoid burning of the reed contacts No. 90 / 91
91 Inductive magnetic sensor Inductive principle of operation - but only reacts to magnetic fields Interference from other magnetic fields must be avoided Solid state device - higher switching frequency - 1kHz No. 91 / 91
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