displacement sensor

Standard sensors may fail over time if water enters the housing. For saturated conditions, we recommend our IP68-sealed models with additional potting inside the connector. These have been used in reservoir slope projects without drift issues. Just specify the expected submersion depth when ordering.

Rod types are easier to install in drilled boreholes when the path is straight. Cable types make sense if the measurement line has bends or if the installation space is tight, because the cable can route around obstacles. Both can be anchored at a reference point outside the deformation zone. We usually suggest a quick sketch of your tunnel cross-section so we can pick the right mounting kit.

If your datalogger accepts a 4–20 mA current loop, that’s the simplest option – it’s immune to long cable runs. For vibrating wire loggers like Campbell Scientific or GEOKON, choose the VWI output. We can also supply RS485 digital output if you need to chain sensors on a bus. Just tell us your logger model and we’ll match the output.

Yes, as standard we include adjustable L-brackets and expansion bolts. For steel structures, we supply magnetic bases or welding tabs. We’ve seen too many bad readings because the sensor was tied with wire, so we make sure the mechanics are solid from the start.