Magnetostrictive Displacement Sensor

Magnetostrictive displacement sensors from Kingmach use the time-of-flight measurement of a torsional strain pulse—often called the Wiedemann effect—to determine the position of a moving magnet along a waveguide. Since the sensing element is completely enclosed and the position magnet never touches the waveguide, the measurement loop stays immune to dirt, moisture, and mechanical wear. That means years of drift-free operation even when submerged or buried in harsh outdoor environments. In practice, this translates to reliable monitoring of crack openings, joint displacements, or settlement in concrete structures. Kingmach offers the sensors in various measurement lengths, generally up to several meters, and can configure them to output analog voltage, current, or digital signals like SSI or CANbus. Build quality uses stainless steel housings with IP68-rated electronics, and the company can add mounting accessories or protective covers if a site demands them. Because the sensing technology requires no periodic re-calibration, maintenance crews can focus on data interpretation rather than field rectification. The brand’s middle-market positioning balances price and performance. While the sensors aren’t the cheapest on the market, they come with turn-key support: application engineers help size the right range, choose output protocols, and plan for long cable runs without signal degradation. For large infrastructure owners or monitoring service providers, this reduces integration headaches. Customization doesn’t stop at the sensor head; Kingmach also supplies compatible readout units and can integrate the sensors into larger data acquisition systems, often with cloud access, through their global distributor network.