magnetic displacement transducer

A string pot has moving parts that wear out, especially in dirty or high-cycle applications. An LVDT requires careful alignment and is sensitive to side loads. A magnetostrictive transducer gives you absolute position with no contact between the magnet and the sensing element, so there’s nothing to wear. The electronics are sealed inside the rod, making it far more tolerant of moisture and fine particles.

Yes, that’s where they’re most often used. The housing is typically IP67 or better, and the electronics are potted to handle condensation. Below-grade installations usually add a sealed conduit to route the cable out of the ground. Direct sunlight doesn’t affect the measurement, though long-term UV exposure may call for a stainless steel housing instead of plastic options.

4–20 mA is the most common because it travels long cable runs without signal loss and can be powered directly from the loop. If your logger only takes voltage, 0–10 V works well but is more prone to interference over distance. For digital systems, SSI gives you fast, noise-immune communication. We can configure the output at the factory to match your existing setup.

Standard practice is to use rod-end bearings or ball joints at both ends. This allows a few degrees of misalignment without binding or introducing side load on the rod. For applications like crack monitoring, we often add a spring-loaded pushrod with a swivel foot. It’s a simple mechanical fix that saves time during installation.

The body length is tied directly to the measurement range. If you need a 200 mm stroke, the body will be somewhat longer than that to accommodate the sensing element and connector. We can sometimes optimize the nose design or use a right-angle connector to trim a bit of length. For tight spaces, we might suggest a different form factor—talk to us early in the design phase so we can recommend the most compact option.