The mainSENSOR is based on a flexible concept which makes it suitable for the application in different fields of application especially in case of high quantities.
The sensor measures the distance to a magnet, which is either fixed in a direct line to the measurement object or laterally offset. As different strength magnets are applied, measuring ranges of between 20mm and 55mm can be achieved. However, in order to adapt the measuring range, it is only necessary to change the magnet. The lateral offset hardly influences the characteristic curve but is a space-saving alternative particularly for restricted installation spaces. The magnet movement effects a change in the magnetic flow in the sensor element which is detected by the sensor coil. A linear relationship between output signal and magnet distance (self-linearisation technology) is produced. The self-linearisation ensures a linear signal, eliminating the need for complex calibration and makes the sensors ready for use within a short time frame.
Advantages over Hall Effect sensors and inductive sensors
Unlike magnetic field sensors, the mainSENSOR covers a significantly larger measuring range and provides a clear price advantage in this sensor class. The sensor also provides signal stability when the magnet is not centred (axle offset). Compared to purely inductive sensors, the sensitivity remains the same in the end of the measuring range and therefore provides improved technical data. It is possible to measure through non-ferromagnetic materials such as aluminium and stainless steel, which is why the sensor can be housed within protective, compact solid metal, which enables a spatial separation of magnet and sensor. The magnet can be installed in difficult ambient conditions, while the sensor can be mounted in a "safe" area. The mainSENSOR operates in a non-contact manner and is therefore wear-free.
Fields of application include single applications in conventional machine building through to measurements in automated processes and low cost-high volume production environments. A tight, robust housing around the mainSENSOR makes it resistant to harsh industrial environments. Oil and dirt therefore have no influence on the precise measurement results. The pressure-resistant sensor can also be used in hygienic areas.