Glossary for detailled explanation - take your pick:
Sensors with teach-in function are programmed by the user through potentiometers, slide switches, sensing devices or software. Thereby, the sensors always achieve a working distance within the secure detection range. By the use of micro-controllers, a great variety of parameters can be adjusted via teach-in functions.
The deviation of the effective operating distance Sr within the temperature range of - 25°C up to + 70°C, is called temperature drift.
In accordance with DIN EN 90647-5-2 this is valid: Δsr/sr ≤ 10 %.
Depending on the type, transmitters of optical sensors are equiped by a test input. Via this input, the light of the transmitter can be switched on or off. Through periodical activation of the test input with its corresponding evaluation of the receiver reaction, the function of the light barrier can be controlled effectively.
Thru-Beam Light Barrier
Thru-beam light barriers consist of separated sender and receiver units. Both components have to be adjusted in parallel. The light beam between sender and receiver is interrupted by the testing object. Thru-beam light barriers are especially suitable in unfavourable environmental conditions.
Transmission in %
The degree for the transparency of a medium defines the relation between passed light and radiated light in %.
Triangulation is an optical measuring method with the trigonometric function. Transmitter and receiver beam are intersecting in an acute angle and only in this angle the sensing objects are detected. An advantage of the triangulation method is the detection of very small distance changes and the insensitivity for shapes and colours of the sensing object.
The triple reflector is a reflector made of pyramidal segments whose three lateral surfaces are creating an angle of 90° each. The light that enters the base area, is reflected in parallel to itself ("in itself"). Linear polarised light is turned within its polarisation level, too. By doing this, false switching because of reflecting material within a reflective light barrier is avoided.
Tube sensors of Pulsotronic detect moving objects as well as stationary media in pipes, tubes or other round containers. In contrary to standard ring sensors, the tube sensor is assembled easily with cable ties at the housing. The combination of static and dynamic switching behaviour allows the use in almost all applications.