Operation mode

Thru-beam

Thru-beam requires a separate transmitter and receiver sensor that are mounted and aligned opposite of each other so that the transmitter directs its light towards the receiver. An object is detected when the beam of light is interrupted between the transmitter and receiver sensors. Thru-beam is the most effective use of infrared light enabling the highest level of excess gain for reliable sensing through contaminated environments.

Diffuse Proximity

Diffuse Proximity requires a transmitter and receiver that are mounted adjacent to each other, in the same or separate housing, so that the transmitter directs it light towards the object to be detected. An object is detected when the beam of light is reflected back to the receiver. The sensing range is dependent of the reflectivity of the object.

Background Suppression

Background suppression requires a transmitter and receiver that are mounted adjacent to each other, in the same housing, so that the transmitter directs its light towards the object to be detected. An object is detected when the beam of light is reflected back by an object, within the defined detection area, back to the receiver. The object is detected independently of the reflectivity of its surface, which ensures that the background can remain undetected.

Retro-reflektive

Retro Reflective requires a transmitter and receiver that are mounted adjacent to each other, in the same housing, so that the transmitter directs its light towards a retro reflector mounted opposite that reflects light back to the receiver. An object is detected when the beam of light is interrupted between the sensor and retro reflector.

Polarised retro-reflektive

Polarised retro reflective requires a transmitter and receiver that are mounted adjacent to each other, in the same housing, so that the transmitter directs its light towards a retro reflector mounted opposite that reflects light back to the receiver. An object is detected when the beam of light is interrupted between the sensor and retro reflector.
Special polarising filters ensure that the receiver only senses light reflected by a retro reflector, which ensures that shiny and reflective objects are reliably detected.

Light Curtains

Light curtain systems require a separate transmitter and receiver detector that are mounted and aligned opposite of each other so that multiple light beams are established between the detectors. An object is detected when one or more light beams are interrupted between the transmitter and receiver detectors.

Fork Sensors

Fork sensor requires a transmitter and receiver that are mounted in a fixed position, opposite of each other in the same housing, so that the transmitter directs its light towards the receiver. An object is detected when the beam of light is interrupted between the transmitter and receiver.

Fibre Sensor - Individual Fibre Optics

Fibre sensor requires a transmitter and receiver, in the same or separate housing, to which glass fibre optic cables are individually connected to conduct and guide light from the transmitter and to the receiver. Individual fibre optic cables are used in pairs and mounted opposite of each other so that the transmitting light is directed towards the receiving cable achieving thru-beam operation mode. An object is detected when the beam of light is interrupted between the transmitting and receiving cable. Glass fibre optics are able to withstand corrosive and high temperature environments, and enable detection in limited space.

Fibre Sensor - Bifurcated Fibre Optics

Fibre sensor requires a transmitter and receiver, in the same or separate housing, to which a glass fibre optic cable is connected to conduct and guide light from the transmitter and to the receiver. Bifurcated fibre optic cables combine the transmitted and received light in the same cable assembly (via two branches consisting of different fibres) achieving diffuse proximity operation mode. An object is detected when the beam of light is reflected back to the receiving part of the cable. Glass fibre optics are able to withstand corrosive and high temperature environments, and enable detection in limited space.