piezometer groundwater

In low-permeability soils like clay, vibrating wire piezometers typically respond faster and offer better long-term stability than standpipe types. The small volume of water displacement means they can read pore pressure changes without significantly draining the formation, which is critical in fine-grained materials. Kingmarch supplies both single-point and multipoint VW strings, and our technicians can help you decide on the right filter zone length.

Our vibrating wire piezometers include built-in surge protection diodes, but you’ll still want to plan the surface setup. Bury cables in conduit where possible, ground the datalogger enclosure, and avoid running signal lines parallel to power cables. We ship every unit with a wiring diagram that shows the correct grounding scheme. For added safety, pneumatic piezometers eliminate electrical risk entirely.

Yes. We regularly build custom piezometers with thicker diaphragms and high-range transducers for artesian conditions. Just tell us the expected head and casing diameter, and we’ll recommend a transducer rating with a safety factor. We’ve supplied units rated up to 10 MPa for deep confined aquifers.

Drift often comes from thermal effects, material creep, or moisture ingress. We address thermal effects with individual temperature sensors in vibrating wire piezometers, allowing for real-time correction. The sensing elements are vacuum-sealed, and cable connections use molded boots to prevent moisture. If you notice a trend, comparing barometric data can often reveal the cause.