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Optical - Diffuse
Inductive
Reed switch
Inductive ma...
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Type : Through-beam
Optical sensors (Through-beam)
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Transmitter Receiver
Type : Through-beam
Optical sen...
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Transmitter Receiver
Type : Through-beam
Optical sen...
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Targe
t
Optical sensors (Through-beam)
Type : Throug...
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Transmitter Receiver
Type : Through-beam
Optical sen...
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Transmitter Receiver
Type : Through-beam
Optical sen...
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Transmitter Receiver
Type : Through-beam
Optical sen...
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Transmitter Receiver
Type : Through-beam
Optical se...
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Transmitter Receiver
Type : Through-beam
Optical se...
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Transmitter Receiver
Type : Through-beam
Optical se...
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Transmitter Receiver
Type : Through-beam
Optical se...
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Targe
t
Long sensing distance: up to 30 metres with...
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Optical sensors (Retro-reflective)
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Reflector
(prismatic)
T
R
Optical sensors (Retro-re...
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Reflector
(prismatic)
T
RTransmitter
/Receiver
Opti...
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Reflector
(prismatic)
T
RTransmitter
/Receiver
Opti...
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Reflector
(prismatic)
Target
T
RTransmitter
/Receiv...
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Reflector
(prismatic)
T
RTransmitter
/Receiver
Opti...
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Reflector
(prismatic)
T
RTransmitter
/Receiver
Opti...
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Reflector
(prismatic)
T
RTransmitter
/Receiver
Opti...
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Reflector
(prismatic)
T
RTransmitter
/Receiver
Opti...
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Reflector
(prismatic)
T
RTransmitter
/Receiver
Opti...
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Reflector
(prismatic)
T
RTransmitter
/Receiver
Opti...
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Reflector
(prismatic)
Sensing distance : 1/2 to 1/3...
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Type : Diffuse
Optical sensors (Diffuse)
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Target
T
RTransmitter
/Receiver
Optical sensors (Di...
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T
RTransmitter
/Receiver
Optical sensors (Diffuse)
...
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T
RTransmitter
/Receiver
Optical sensors (Diffuse)
...
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T
RTransmitter
/Receiver
Optical sensors (Diffuse)
...
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T
RTransmitter
/Receiver
Optical sensors (Diffuse)
...
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T
RTransmitter
/Receiver
Optical sensors (Diffuse)
...
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Transmitter
/Receiver
Sensing distance: much less t...
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Inductive sensors
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Connection cable
LED indicator
Resonant circuit coi...
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Sensor
Oscillation
Amplitude
Sensor
output
signal
O...
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ON
OFF
Target
Sensor
Oscillation
Amplitude
Sensor
o...
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ON
OFF
Target
Sensor
Oscillation
Amplitude
Sensor
o...
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ON
OFF
Target
Sensor
Oscillation
Amplitude
Sensor
o...
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ON
OFF
Target
Sensor
Oscillation
Amplitude
Sensor
o...
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ON
OFF
Target
Sensor
Oscillation
Amplitude
Sensor
o...
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ON
OFF
Target
Sensor
Oscillation
Amplitude
Sensor
o...
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ON
OFF
Target
Sensor
Oscillation
Amplitude
Sensor
o...
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ON
OFF
Target
Sensor
Oscillation
Amplitude
Sensor
o...
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Will detect any conductive material
Quoted distance...
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Reed switch
17.10.03 No. 48 / 91© Festo Didactic – Training and Consulting Sensors
Glass Tube filled
with nitrogen
Reed
contacts
LED
i...
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Reed switch
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Reed switch
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Reed switch
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Reed switch
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Reed switch
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Reed switch
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24v
Reed switch
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24v
Reed switch
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Interference from other magnetic fields must be avo...
17.10.03 No. 58 / 91© Festo Didactic – Training and Consulting Sensors
Inductive magnetic sensor
17.10.03 No. 59 / 91© Festo Didactic – Training and Consulting Sensors
Connection
cable
LED
Indicator
Resonant circuit
coi...
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Inductive magnetic sensor
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Inductive magnetic sensor
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Inductive magnetic sensor
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Inductive magnetic sensor
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Inductive magnetic sensor
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Inductive magnetic sensor
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Inductive principle of operation - but only reacts ...
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Capacitive sensor
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Connection cable
Adjusting screw
LED indicator
Acti...
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Target
Capacitive sensor
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Capacitive sensor
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Capacitive sensor
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Capacitive sensor
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Detects any material denser than air (as
long as th...
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Sensor is adjusted so that
it does not ‘see’ the wa...
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As the level rises the fluid
affects the sensor fie...
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Until the sensor switches.
Capacitive sensor
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Sensor symbols
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+ 18 to 30 Volts
DC.
0 V
Output
Inductive
Capacitiv...
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+ 18 to 30 Volts
DC.
0 V
Capacitive Sensor with
Nor...
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Sensor connection
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+ 18 to 30 Volts DC
0 V
Output
24v
DC
0v
PNP Type
•...
17.10.03 No. 82 / 91© Festo Didactic – Training and Consulting Sensors
NPN Type
• Output switches
through to 0v
• Negative...
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Sensor connection
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+ 18 to 30 Volts
DC.
0 V
Output
Inductive
Capacitiv...
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Will detect any conductive material
Quoted distance...
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Detects any material denser than air.
(as long as t...
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Target
Type: Through-beam
Long sensing distance : u...
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Transmitter / Receiver Reflector
(prismatic)
Type: ...
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Transmitter /
Receiver
Type : Diffuse
Sensing dista...
17.10.03 No. 90 / 91© Festo Didactic – Training and Consulting Sensors
Interference from other
magnetic fields must be
avo...
17.10.03 No. 91 / 91© Festo Didactic – Training and Consulting Sensors
Inductive principle of operation - but
only reacts ...
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Sensors, Proximity sensors. Optical – Through-beam, Optical - Diffuse

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  • Sensors, Proximity sensors. Optical – Through-beam, Optical - Diffuse

    1. 1. 17.10.03 No. 1 / 91© Festo Didactic – Training and Consulting Sensors Optical - Diffuse Inductive Reed switch Inductive magnetic Capacitive Symbols Connection Optical – Through-beam Optical – Retro-reflective Proximity sensors
    2. 2. 17.10.03 No. 2 / 91© Festo Didactic – Training and Consulting Sensors Type : Through-beam Optical sensors (Through-beam)
    3. 3. 17.10.03 No. 3 / 91© Festo Didactic – Training and Consulting Sensors Transmitter Receiver Type : Through-beam Optical sensors (Through-beam)
    4. 4. 17.10.03 No. 4 / 91© Festo Didactic – Training and Consulting Sensors Transmitter Receiver Type : Through-beam Optical sensors (Through-beam)
    5. 5. 17.10.03 No. 5 / 91© Festo Didactic – Training and Consulting Sensors Targe t Optical sensors (Through-beam) Type : Through-beam Transmitter Receiver
    6. 6. 17.10.03 No. 6 / 91© Festo Didactic – Training and Consulting Sensors Transmitter Receiver Type : Through-beam Optical sensors (Through-beam)
    7. 7. 17.10.03 No. 8 / 91© Festo Didactic – Training and Consulting Sensors Transmitter Receiver Type : Through-beam Optical sensors (Through-beam)
    8. 8. 17.10.03 No. 9 / 91© Festo Didactic – Training and Consulting Sensors Transmitter Receiver Type : Through-beam Optical sensors (Through-beam)
    9. 9. 17.10.03 No. 10 / 91© Festo Didactic – Training and Consulting Sensors Transmitter Receiver Type : Through-beam Optical sensors (Through-beam)
    10. 10. 17.10.03 No. 11 / 91© Festo Didactic – Training and Consulting Sensors Transmitter Receiver Type : Through-beam Optical sensors (Through-beam)
    11. 11. 17.10.03 No. 12 / 91© Festo Didactic – Training and Consulting Sensors Transmitter Receiver Type : Through-beam Optical sensors (Through-beam)
    12. 12. 17.10.03 No. 13 / 91© Festo Didactic – Training and Consulting Sensors Transmitter Receiver Type : Through-beam Optical sensors (Through-beam)
    13. 13. 17.10.03 No. 14 / 91© Festo Didactic – Training and Consulting Sensors Targe t Long sensing distance: up to 30 metres with some devices Will detect all but very transparent materials Must be accurately aligned Transmitter Receiver Type : Through-beam Optical sensors (Through-beam)
    14. 14. 17.10.03 No. 15 / 91© Festo Didactic – Training and Consulting Sensors Optical sensors (Retro-reflective)
    15. 15. 17.10.03 No. 16 / 91© Festo Didactic – Training and Consulting Sensors Reflector (prismatic) T R Optical sensors (Retro-reflective) Type : Retro reflective Transmitter /Receiver
    16. 16. 17.10.03 No. 17 / 91© Festo Didactic – Training and Consulting Sensors Reflector (prismatic) T RTransmitter /Receiver Optical sensors (Retro-reflective) Type : Retro reflective
    17. 17. 17.10.03 No. 18 / 91© Festo Didactic – Training and Consulting Sensors Reflector (prismatic) T RTransmitter /Receiver Optical sensors (Retro-reflective) Type : Retro reflective
    18. 18. 17.10.03 No. 19 / 91© Festo Didactic – Training and Consulting Sensors Reflector (prismatic) Target T RTransmitter /Receiver Optical sensors (Retro-reflective) Type : Retro reflective
    19. 19. 17.10.03 No. 20 / 91© Festo Didactic – Training and Consulting Sensors Reflector (prismatic) T RTransmitter /Receiver Optical sensors (Retro-reflective) Type : Retro reflective
    20. 20. 17.10.03 No. 21 / 91© Festo Didactic – Training and Consulting Sensors Reflector (prismatic) T RTransmitter /Receiver Optical sensors (Retro-reflective) Type : Retro reflective
    21. 21. 17.10.03 No. 22 / 91© Festo Didactic – Training and Consulting Sensors Reflector (prismatic) T RTransmitter /Receiver Optical sensors (Retro-reflective) Type : Retro reflective
    22. 22. 17.10.03 No. 23 / 91© Festo Didactic – Training and Consulting Sensors Reflector (prismatic) T RTransmitter /Receiver Optical sensors (Retro-reflective) Type : Retro reflective
    23. 23. 17.10.03 No. 24 / 91© Festo Didactic – Training and Consulting Sensors Reflector (prismatic) T RTransmitter /Receiver Optical sensors (Retro-reflective) Type : Retro reflective
    24. 24. 17.10.03 No. 25 / 91© Festo Didactic – Training and Consulting Sensors Reflector (prismatic) T RTransmitter /Receiver Optical sensors (Retro-reflective) Type : Retro reflective
    25. 25. 17.10.03 No. 26 / 91© Festo Didactic – Training and Consulting Sensors Reflector (prismatic) 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 Type : Retro reflective Transmitter /Receiver Optical sensors (Retro-reflective)
    26. 26. 17.10.03 No. 27 / 91© Festo Didactic – Training and Consulting Sensors Type : Diffuse Optical sensors (Diffuse)
    27. 27. 17.10.03 No. 28 / 91© Festo Didactic – Training and Consulting Sensors Target T RTransmitter /Receiver Optical sensors (Diffuse) Type : Diffuse
    28. 28. 17.10.03 No. 29 / 91© Festo Didactic – Training and Consulting Sensors T RTransmitter /Receiver Optical sensors (Diffuse) Type : Diffuse
    29. 29. 17.10.03 No. 30 / 91© Festo Didactic – Training and Consulting Sensors T RTransmitter /Receiver Optical sensors (Diffuse) Type : Diffuse
    30. 30. 17.10.03 No. 31 / 91© Festo Didactic – Training and Consulting Sensors T RTransmitter /Receiver Optical sensors (Diffuse) Type : Diffuse
    31. 31. 17.10.03 No. 32 / 91© Festo Didactic – Training and Consulting Sensors T RTransmitter /Receiver Optical sensors (Diffuse) Type : Diffuse
    32. 32. 17.10.03 No. 33 / 91© Festo Didactic – Training and Consulting Sensors T RTransmitter /Receiver Optical sensors (Diffuse) Type : Diffuse
    33. 33. 17.10.03 No. 34 / 91© Festo Didactic – Training and Consulting Sensors Transmitter /Receiver 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 Optical sensors (Diffuse) Type : Diffuse
    34. 34. 17.10.03 No. 35 / 91© Festo Didactic – Training and Consulting Sensors Inductive sensors
    35. 35. 17.10.03 No. 36 / 91© Festo Didactic – Training and Consulting Sensors Connection cable LED indicator Resonant circuit coil Active surface High frequency magnetic field (300 to 800 kHz) Inductive sensors
    36. 36. 17.10.03 No. 37 / 91© Festo Didactic – Training and Consulting Sensors Sensor Oscillation Amplitude Sensor output signal ON OFF Targ et Inductive sensors
    37. 37. 17.10.03 No. 38 / 91© Festo Didactic – Training and Consulting Sensors ON OFF Target Sensor Oscillation Amplitude Sensor output signal Inductive sensors
    38. 38. 17.10.03 No. 39 / 91© Festo Didactic – Training and Consulting Sensors ON OFF Target Sensor Oscillation Amplitude Sensor output signal Inductive sensors
    39. 39. 17.10.03 No. 40 / 91© Festo Didactic – Training and Consulting Sensors ON OFF Target Sensor Oscillation Amplitude Sensor output signal Inductive sensors
    40. 40. 17.10.03 No. 41 / 91© Festo Didactic – Training and Consulting Sensors ON OFF Target Sensor Oscillation Amplitude Sensor output signal Inductive sensors
    41. 41. 17.10.03 No. 42 / 91© Festo Didactic – Training and Consulting Sensors ON OFF Target Sensor Oscillation Amplitude Sensor output signal Inductive sensors
    42. 42. 17.10.03 No. 43 / 91© Festo Didactic – Training and Consulting Sensors ON OFF Target Sensor Oscillation Amplitude Sensor output signal Inductive sensors
    43. 43. 17.10.03 No. 44 / 91© Festo Didactic – Training and Consulting Sensors ON OFF Target Sensor Oscillation Amplitude Sensor output signal Inductive sensors
    44. 44. 17.10.03 No. 45 / 91© Festo Didactic – Training and Consulting Sensors ON OFF Target Sensor Oscillation Amplitude Sensor output signal Inductive sensors
    45. 45. 17.10.03 No. 46 / 91© Festo Didactic – Training and Consulting Sensors Will detect any conductive material Quoted distances are for mild steel Sensor performance can be affected by: • Temperature • Target material • Target dimensions Inductive sensors
    46. 46. 17.10.03 No. 47 / 91© Festo Didactic – Training and Consulting Sensors Reed switch
    47. 47. 17.10.03 No. 48 / 91© Festo Didactic – Training and Consulting Sensors Glass Tube filled with nitrogen Reed contacts LED indicator Reed switch
    48. 48. 17.10.03 No. 49 / 91© Festo Didactic – Training and Consulting Sensors Reed switch
    49. 49. 17.10.03 No. 50 / 91© Festo Didactic – Training and Consulting Sensors Reed switch
    50. 50. 17.10.03 No. 51 / 91© Festo Didactic – Training and Consulting Sensors Reed switch
    51. 51. 17.10.03 No. 52 / 91© Festo Didactic – Training and Consulting Sensors Reed switch
    52. 52. 17.10.03 No. 53 / 91© Festo Didactic – Training and Consulting Sensors Reed switch
    53. 53. 17.10.03 No. 54 / 91© Festo Didactic – Training and Consulting Sensors Reed switch
    54. 54. 17.10.03 No. 55 / 91© Festo Didactic – Training and Consulting Sensors 24v Reed switch
    55. 55. 17.10.03 No. 56 / 91© Festo Didactic – Training and Consulting Sensors 24v Reed switch
    56. 56. 17.10.03 No. 57 / 91© Festo Didactic – Training and Consulting Sensors 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. Reed switch
    57. 57. 17.10.03 No. 58 / 91© Festo Didactic – Training and Consulting Sensors Inductive magnetic sensor
    58. 58. 17.10.03 No. 59 / 91© Festo Didactic – Training and Consulting Sensors Connection cable LED Indicator Resonant circuit coil High frequency magnetic field Inductive magnetic sensor
    59. 59. 17.10.03 No. 60 / 91© Festo Didactic – Training and Consulting Sensors Inductive magnetic sensor
    60. 60. 17.10.03 No. 61 / 91© Festo Didactic – Training and Consulting Sensors Inductive magnetic sensor
    61. 61. 17.10.03 No. 62 / 91© Festo Didactic – Training and Consulting Sensors Inductive magnetic sensor
    62. 62. 17.10.03 No. 63 / 91© Festo Didactic – Training and Consulting Sensors Inductive magnetic sensor
    63. 63. 17.10.03 No. 64 / 91© Festo Didactic – Training and Consulting Sensors Inductive magnetic sensor
    64. 64. 17.10.03 No. 65 / 91© Festo Didactic – Training and Consulting Sensors Inductive magnetic sensor
    65. 65. 17.10.03 No. 66 / 91© Festo Didactic – Training and Consulting Sensors 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 Inductive magnetic sensor
    66. 66. 17.10.03 No. 67 / 91© Festo Didactic – Training and Consulting Sensors Capacitive sensor
    67. 67. 17.10.03 No. 68 / 91© Festo Didactic – Training and Consulting Sensors Connection cable Adjusting screw LED indicator Active surface Active electrode Earth electrode Electrostatic field Sensor is looking for a change in capacitance in the active field Capacitive sensor
    68. 68. 17.10.03 No. 69 / 91© Festo Didactic – Training and Consulting Sensors Target Capacitive sensor
    69. 69. 17.10.03 No. 70 / 91© Festo Didactic – Training and Consulting Sensors Capacitive sensor
    70. 70. 17.10.03 No. 71 / 91© Festo Didactic – Training and Consulting Sensors Capacitive sensor
    71. 71. 17.10.03 No. 72 / 91© Festo Didactic – Training and Consulting Sensors Capacitive sensor
    72. 72. 17.10.03 No. 73 / 91© Festo Didactic – Training and Consulting Sensors 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 Capacitive sensor
    73. 73. 17.10.03 No. 74 / 91© Festo Didactic – Training and Consulting Sensors Sensor is adjusted so that it does not ‘see’ the wall of the vessel. Capacitive sensor
    74. 74. 17.10.03 No. 75 / 91© Festo Didactic – Training and Consulting Sensors As the level rises the fluid affects the sensor field. Capacitive sensor
    75. 75. 17.10.03 No. 76 / 91© Festo Didactic – Training and Consulting Sensors Until the sensor switches. Capacitive sensor
    76. 76. 17.10.03 No. 77 / 91© Festo Didactic – Training and Consulting Sensors Sensor symbols
    77. 77. 17.10.03 No. 78 / 91© Festo Didactic – Training and Consulting Sensors + 18 to 30 Volts DC. 0 V Output Inductive Capacitive Optical Magnetic Ultrasonic Normally open Normally closed Sensor symbols
    78. 78. 17.10.03 No. 79 / 91© Festo Didactic – Training and Consulting Sensors + 18 to 30 Volts DC. 0 V Capacitive Sensor with Normally open function Output Sensor symbols
    79. 79. 17.10.03 No. 80 / 91© Festo Didactic – Training and Consulting Sensors Sensor connection
    80. 80. 17.10.03 No. 81 / 91© Festo Didactic – Training and Consulting Sensors + 18 to 30 Volts DC 0 V Output 24v DC 0v PNP Type • Output is Positive • Positive switching Sensor connection
    81. 81. 17.10.03 No. 82 / 91© Festo Didactic – Training and Consulting Sensors NPN Type • Output switches through to 0v • Negative switching + 18 to 30 Volts DC 0 V Output 24v DC 0v Sensor connection
    82. 82. 17.10.03 No. 83 / 91© Festo Didactic – Training and Consulting Sensors Sensor connection
    83. 83. 17.10.03 No. 84 / 91© Festo Didactic – Training and Consulting Sensors + 18 to 30 Volts DC. 0 V Output Inductive Capacitive Optical Magnetic Ultrasonic Normally open Normally closed Sensor connection
    84. 84. 17.10.03 No. 85 / 91© Festo Didactic – Training and Consulting Sensors Will detect any conductive material Quoted distances are for mild steel Sensor performance can be affected by:- • Temperature • Target material • Target dimensions. ON OF F Targe t Sensor Oscillation Amplitude Sensor output signal Inductive sensor
    85. 85. 17.10.03 No. 86 / 91© Festo Didactic – Training and Consulting Sensors 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 Capacitive sensor
    86. 86. 17.10.03 No. 87 / 91© Festo Didactic – Training and Consulting Sensors Target Type: Through-beam Long sensing distance : up to 30 metres with some devices Will detect all but very transparent materials Must be accurately aligned Transmitter Receiver Optical sensors
    87. 87. 17.10.03 No. 88 / 91© Festo Didactic – Training and Consulting Sensors Transmitter / Receiver Reflector (prismatic) 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 Optical sensors
    88. 88. 17.10.03 No. 89 / 91© Festo Didactic – Training and Consulting Sensors Transmitter / Receiver 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 Optical sensors
    89. 89. 17.10.03 No. 90 / 91© Festo Didactic – Training and Consulting Sensors 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. Reed switch
    90. 90. 17.10.03 No. 91 / 91© Festo Didactic – Training and Consulting Sensors 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 Inductive magnetic sensor

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