First analog stop tappet from ipf

High-precision mechanical sensor for linear measurements

With the mechanical limit stops as metal top-mounted adapters for inductive sensors from ipof, robust small sensors can be solved very easily and reliably. However, for applications in which the requirements go via pure presence monitoring, ipf now offers the mechanical sensor YM120020 the first stop tappet for linear measurements.

The YM120020 in M12x1 design has a travel range of -5 to +5mm with a maximum linearity deviation of ±0.5% over the entire measuring range. The respective position of the plunger with hardened probe tip is output via an M12-connector as an analog signal (0...10V).

The new sensor from ipf works according to the principle of the differential transformer, a special form of transformer. A spring-mounted measuring rod serves as the moving core of the excitation coil, with a passive coil positioned on either side. As soon as the rod is no longer in its middle position (0mm), a voltage is induced in one of the two adjacent coils, which enables linear measurement via the output of an analog signal by the downstream electronics. Due to the high-resolution, wear-free design, the solution is very precise and mechanically extremely robust (shock resistance up to 200g). The functional principle of the YM120020 also ensures that the measured value is retained even after a voltage interruption.

Areas of application for the new mechanical sensor can be found across all industries in automation as well as process and quality assurance, where harsh environmental conditions predominate, e.g. wet conditions, aggressive chemicals or increased temperatures. A concrete example in this context is the positioning of glass plates with very high accuracy of