At the Smart Production Systems (SPS) exhibition in Nuremberg, Contrinex's stand featured a display visualising the precision of its analogue inductive sensors, which were, on this occasion, used within its SMART measurement sensors. The display featured a metal cylinder, and visitors were encouraged to squeeze it like a fairground test of strength.
(See PLUS Automation at FoodManufacturing.Live, 15 October 2025, on stand 49)
Contrinex's analogue inductive sensors offer an accuracy of a few microns and are trusted in a wide range of applications and industries. A challenge, however, is to visualise how small 1 or 2 microns is, or what a sensor with such precise measurement can do. That's where the Contrinex demo at SPS comes in.
No matter how hard you squeeze the cylinder, you cannot feel any movement, but the analogue sensor can. The sensor's output, which is shown on a screen, is encouraging, showing a large amount of movement when you squeeze the cylinder hard. This was devalued somewhat when a colleague flicked the metal cylinder with a finger; the sensor shows the movement within the cylinder, which rings like a tuning fork.
To explain the technology, Contrinex's analogue inductive sensors provide long sensing ranges of up to 40mm because they use the Condist oscillator technology. This ensures the inductive sensor has excellent temperature stability and repeat accuracy, essential for precision measurement in the m range.