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PEPPERL+FUCHS Proximity inductive sensors

Inductive proximity sensors are an optimum choice for exact noncontact recognition of metallic objects (and also of materials in which induced eddy currents) in a machine-building or automated equipment.
Inductive sensors are available in different Types. The main of them are:

Inductive position sensors cylindrical.
Sensitive part of the sensors in this version is mechanical plane, perpendicular to the axis of the sensor. Cylindrical sensors have a diameter from 3 mm (threadless cuts) or from 4 mm (with the screw-thread cutting) to 30 mm (with the screw-thread cutting) or 40 mm (smooth, with a corps under a clamp).

Inductive sensors ring type.
These sensors are executed in the form of a ring, inside of which is concentrated alternating electromagnetic field. The sensor is activated when at passing through the ring metal object.
Sensors of RC10 and RC15 Series are designed to determine the direction of movement of the object (high speed is 10 m/ss).

Inductive sensors slot type.
The inductive sensors of slot type have an U-vivid corps, executed from the plastic of PBT, fiberglass reinforced. The alternating electromagnetic field is generated between the two coils, mounted against each other on U-vivid bars. The sensor responds to the appearance of metal object in the area between the coils.

Due to the low values of current and voltage allows installation of products in hazardous areas. Sensors with the output of NAMUR type are intended for connecting to the external switching amplifier (barrier), transformative change in the output current in a two-level output signal (transistor or relay). The Pepperl Fuchs Company offers a wide spectrum of switching amplifiers for hazardous and normal applications.

Inductive sensors in rectangular housings.
The housing of these sensors, presented by Pepperl+Fuchs under the brand name Varikont and Varikont M, have mounting holes, according to the European standard of EN 60947. The location of these holes is similar to the layout of the holes of the mechanical position sensors. The head of sensor can be orientated in five different directions, that a sensible surface can be  can be shifted up, down, left, right or forward.
Sensors in the Varikont L housing are compact and can be easily installed with a screwdriver; position of their sensible surface is regulated within a 15-degree deflection in two planes.

The main characteristics of standard inductive proximity sensors are:
- threaded or smooth stainless steel;
- short circuit protection;
- led status indicators;
-connection types: connectors M12, M8 or terminal connection;
-protection against reverse polarity and
- PUR,  PVC or silicon cable types;
- 2...4-wire outputs DC current, AC current,   AS-interface and NAMUR.

Besides standard execution there are models with special characteristic such as high protection class (IP68/IP69), analog output 4-20 mA, model with sensitive stainless steel surface, resistant to welding design coated with PTFE, sensors with safety function, extended operating temperature (40 °C … +250°C).