Magnetic length and angle measuring systems - SIKO - #9

Text version of the page

3.2 3.3 3.4 3.5 3.1 5.0 3.6 3.7 + - 5 MagLine | 5.0 Product Overview www.siko.de The quasi-absolute method This method is based on incremental measuring methods. The measured values are buffered in a system-related electronic evaluation unit so that they are available as absolute values. An integrated battery ensures that currentless motion is also recognized. The specially developed lowest-power technology enables reliable operation for up to 10 years without changing the battery. When installing battery-buffered systems, the prescribed maximum reading distance between the sensor/band must not be exceeded, otherwise measurement information can be lost even with this method. If this is the case, a reference operation is necessary. The true-absolute method Reference operations are not necessary for linear measurement with absolute encoded magnetic strips. The flexible plastic strip is magnetized with a special absolute code. Commissioning is performed by one-time alignment and calibration of the system. Due to the absolute encoding of the band, no buffer battery is necessary and the current position value is immediately available when the system is switched on. Even a change in position in a non-powered condition does not affect the accuracy of the displayed measured value, because the position is stored at each point on the encoded magnetic strip. A reference operation is also unnecessary, for example, if the sensor is lifted from the magnetic band for maintenance purposes. In summary Each of the measuring methods described above has its advantages. A decision on whether an incremental process is preferable for economic reasons or the absolute process for time and safety reasons can be made once the details of the respective system and application are known. Path and angle measurement is a standard assignment in mechanical and plant engineering. The SIKO MagLine products have been in use for many years with modern, track-proven solutions. Irrespective of whether an incremental or absolute process is employed, the contactless measuring principle is by far superior in many applications to conventional solutions such as rotary encoders with rack and pinions, wire-actuated encoders or optical systems due to its extreme robustness. When measurement is required over long distances with a high degree of accuracy and simple handling, MagLine is always an economical solution for a number of tasks. All standard interfaces for connection to control, regulation and bus systems are available. 9