Correction factors for inductive sensors

The Factor 1 sensors were developed to address this problem. Factor 1 sensors have the same sensing range for all metals. Instead of the single coil in a ferrite core to be found in conventional inductive sensors, the oscillators in Factor 1 sensors have two air-core coils that are electrically linked with each other. These can be specifically influenced depending on the metal concerned, making it possible to maintain a constant sensing range for all metals. However, while the double coil has the great advantage of having the same reduction factor for all metals, this is at the price of some disadvantages. For one thing, the increased technical outlay causes higher costs. Also, double switching of the sensor can occur under certain circumstances. With small objects that traverse Factor 1 sensors from the side, the double coil can lead to a double switching impulse. Here is an overview of the advantages and disadvantages of Factor 1 sensors in comparison with inductive sensors: