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INPUT SENSORS |
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INDUCTIVE PROXIMITY SENSORS | |
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These sensors create an inductive field in front of their active surface. When a metallic object enters this area the change in the field causes the output to switch. Available in a wide range of cylindrical, rectangular and ring types, these sensors are suitable for use in many applications, and are particularly suited to harsh environments. The Namur types meet the requirements of DIN standard 19234 and are suitable for use, in conjunction with intrinsically safe amplifiers, in environments where there is risk of explosion. Versions with extended sensing distances, circular H type and spade K type connectors are also available.
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CAPACITIVE PROXIMITY SENSORS | |
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These sensors contain an oscillator which is influenced by the change in capacitance when a solid or liquid comes into contact with the sensing head. The level at which the sensor output switches can be set with the sensitivity adjustment making them suitable for a variety of materials such as water, wood, metal, powders etc. They are available in 3 sizes - M18, M30 and M40 with DC, AC/DC and relay output versions.
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PHOTO-ELECTRIC PROXIMITY SENSORS | |
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These photo-electric sensors, or photocells, are made up of a light emitter and a detector or receiver. The variation in luminous signal when the beam between the emitter and detector is interrupted controls the state of the output. The range covers reflection and through beam types in 3 standard packages with axial or 90º beam NPN, PNP, NO & NC outputs.
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