5/22/2018 Proximity Sensors - Inductive, Capacitive, Magnetic
and Photoel
Need the greatest
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industry for shielded
inductive sensors?
Capacitive sensors with
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Diffused photoelectric
sensors at great prices.
$35.00 each
12mm diameter
stainless steel Inductive
Proximity Sensor at a
great price.
$28.95 each
Battery powered LCD
counter at a great
price. $28.95 each
High operating
temperature inductive
sensors
120C / 248F
Click here for full
product
details and info on
other special offers.
Proximity sensors detect the presence of objects without
physical contact. Since 1983
Fargo Controls proximity sensors have been of the highest
quality, durability &
repeatability to meet today's tough industrial requirements. We
provide a wide range of
proximity sensors to meet all types of applications.
Typical applications include the detection, position, inspection
and counting on
automated machines and manufacturing systems. They are also used
in the following
machinery: packaging, production, printing, plastic molding,
metal working, food
processing, etc
Please visit our Newspage for our latest proximity sensors
addtions.
To learn how inductive, capacitive, magnetic and photoelectric
sensors work please visit
How Proximity Sensors Workpage
To speak with an application engineer please call (732)
389-3376
Inductive SensorsDetection of metallic objects
NEW Inductive Metal Face Sensor
NEW Miniature inductive Sensors
AC, DC; 2, 3 and 4 wire
Tubular, Rectangular & Ring Shaped
Pre-wired or Quick Disconnect Connectors
Extended Operating Distance
High Temperature inductive
TTL Compatible
NAMUR
Capacitive SensorsDetection of metallic and non-metallic
objects
(Liquids, plastics, woods)
AC/DC
DC
Adjustable Operating Distance
NEWProgrammable Output Functions
AC/DC NO or NC selectable
Protective Housings
Photoelectric SensorsUse light sensitive elements to detect
objects
AC, DC
Direct Reflection
Reflection with Reflector
Thru Beam
Adjustable Operating Distances
Programmable Output Function
DC NPN/PNP NO+NC SelectableAC NO/NC Selectable
Magnetic SensorsDetects the presence of permanent magnets
Hermetically sealed
Large Operating Distances
NO, NO+NC
* All sensors are CE compliant.
30 day Test & Evaluation:Any standard unit in our Proximity
Sensor Catalog is available for test and evaluation.
Request catalogfor details.
ACCESSORIES
Operating Principles
Inductive
Capacitive
Magnetic Photoelectric
Connector Cord Sets
NEWValue Line Proximity
Sensors
Totalizing
Preset
Length Measuring
Mechanical
Multifunction
Hour Meters
Elapse Time
Preset
Multifunction
Sensor Power Supplies
Timing Controls
Rotation Controls
Proximity sensors - Inductive, Capacitive, Magnetic and
Photoelectric... http://www.fargocontrols.com/sensors.html
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5/22/2018 Proximity Sensors - Inductive, Capacitive, Magnetic
and Photoel
Power Suppliers & Amplifiers Timing Controls Rotation
Controls
Connectors for Proximity Sensors
OPERATING PRINCIPLES
How do proximity sensors work?
Inductive & Capacitive
Their operating principle is based on a high frequency
oscillator that creates a field in the
close surroundings of the sensing surface. The presence of a
metallic object (inductive)
or any material (capacitive) in the operating area causes a
change of the oscillationamplitude. The rise or fall of such
oscillation is identified by a threshold circuit that
changes the output state of the sensor. The operating distance
of the sensor depends on
the actuator's shape and size and is strictly linked to the
nature of the material (Table 1
& Table 2.). A screw placed on the back of the capacitive
sensor allows regulation of the
operating distance. This sensitivity regulation is useful in
applications, such as detection
of full containers and non-detection of empty containers.
Table 1:INDUCTIVE SENSORS
Sensitivity when different metals are
present.
Sn = operating distance.
Fe37 (iron)
Stainless steel
Brass- bronze
AluminumCopper
1 x Sn
0.9 x Sn
0.5 x Sn
0.4 x Sn0.4 x Sn
Table 2:CAPACITIVE SENSORS
Sensitivity when different materials are
present.
Sn = operating distance.
Metal
Water
Plastic
GlassWood
1 x Sn
1 x Sn
0.5 x Sn
0.5 x Sn0.4 x Sn
Photoelectric
These sensors use light sensitive elements to detect objects and
are made up of an
emitter (light source) and a receiver. Three types of
photoelectric sensors are available.
Direct Reflection - emitter and receiver are housed together and
uses the light reflected
directly off the object for detection. Reflection with Reflector
- emitter and receiver are
housed together and requires a reflector. An object is detected
when it interrupts the
light beam between the sensor and reflector. Thru Beam - emitter
and receiver are
housed separately and detects an object when it interrupts the
light beam between the
emitter and receiver.
Magnetic
Magnetic sensors are actuated by the presence of a permanent
magnet. Their operating
principle is based on the use of reed contacts, which consist of
two low reluctance ferro-
magnetic reeds enclosed in glass bulbs containing inert gas. The
reciprocal attraction of
both reeds in the presence of a magnetic field, due to magnetic
induction, establishes an
electrical contact.
Fargo Controls offers competitive cross references for proximity
sensors made by Allen-
Bradley, Balluff, Baumer Electric, Carlo Gavazzi, Cutler-Hammer,
ifm efector, Namco
Controls, Omron, Pepperl+Fuchs, SICK, Square D, Telemecanique,
TURCK, and a
number of other manufactures. Please contact us at (732)
389-3376 to obtain our
equivalent.
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