Proximity Sensors
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High operating temperature inductive sensors
High operating temperature inductive sensors
120°C / 248°F

proximity sensors:  inductive sensors, capacitive sensors, magnetic sensors and photoelectric sensors

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 News page for our latest proximity sensors addtions.

To learn how inductive, capacitive, magnetic and photoelectric sensors work please visit How Proximity Sensors Work page

To speak with an application engineer please call (732) 389-3376

Inductive Sensors
Detection 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
inductive sensors

Capacitive Sensors
Detection of metallic and non-metallic objects (Liquids, plastics, woods)

AC/DC
DC
Adjustable Operating Distance
NEW Programmable Output Functions
AC/DC NO or NC selectable
Protective Housings
Capacitive sensors

Photoelectric Sensors
Use 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 Selectable
AC NO/NC Selectable
Photoelectric sensors

Magnetic Sensors
Detects the presence of permanent magnets

Hermetically sealed
Large Operating Distances
NO, NO+NC
magnetic sensors

* All sensors are CE compliant.

30 day Test & Evaluation:
Any standard unit in our Proximity Sensor Catalog is available for test and evaluation.
Request catalog for details.



ACCESSORIES

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 oscillation amplitude. 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
Aluminum
Copper
1 x Sn
0.9 x Sn
0.5 x Sn
0.4 x Sn
0.4 x Sn

Table 2:
CAPACITIVE SENSORS

Sensitivity when different materials are present.
Sn = operating distance.


Metal
Water
Plastic
Glass
Wood
1 x Sn
1 x Sn
0.5 x Sn
0.5 x Sn
0.4 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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