ifm electronic - Inductive sensors

  • Different connection options using cable, connector or terminals.
  • Modular efector m units with increased sensing range.
  • Special application sensors for almost all application areas.
  • Cylindrical housings with a diameter of 4 to 34 mm & rectangular housings.
  • Wide range of fixing accessories and sockets.
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Introduction
Inductive sensors take advantage of the physical effect of the change in the quality factor in a resonant circuit caused by eddy current losses in conductive materials. This is how it works: A LC tuned circuit generates a high frequency electromagnetic field. This field is radiated from the active face of the sensor. If a conductive material enters this field, eddy currents will be formed in accordance with the law of inductance which draw energy from the oscillator. This reduces the oscillation amplitude. The change is converted into a switching signal. The operating principle permits detection of all metals irrespective of whether they are moving or not.

Modular sensors
A special series of inductive sensors are the application sensors “efector m”. The feature shared by these proximity sensors is an increased sensing range. Due to a universal connection technology the sensors can be used as 3-wire or 2-wire units. The integrated setting LED display reduces mounting time and ensure utilization of the increased sensing range. All units have a permanent laser-etched type label. This allows clear identification of the units even after many years.
The distance to the active face at which an electrically conductive material causes a change of signal in the sensor is called sensing range. The sensing range of an inductive sensor is defined by means of a target of mild steel (Fe 360). If the switch is damped by other metals, e.g. aluminium or copper, this is reduced. Using correction factors the user can calculate the attainable sensing ranges.
ifm electronic
ifm electronic gmbh is one of the leading manufacturers of automation technology world-wide. More than 3,000 employees in more than 70 countries develop solutions for 80,000 customers in the manufacturing industries. By optimising technical processes in the automotive, chemical and cosmetics industries or in environmental technology and automation of buildings ifm electronic has consistently set new standards and thus ensures tomorrow's production processes.

The family-run company with headquarters in Essen started with the invention of inductive proximity sensors in 1969. The German production in Tettnang on Lake Constance has ensured brand quality right from the start. Today "efector" stands for position and fluid sensors, object recognition, diagnostic and identification systems. The brand "ecomat" is synonymous with networking and control systems. In 2007 ifm made a turnover of more than € 410 million with above-average product quality, exceptional innovations and consistent close contact to the customer.