
Vibrating Wire Strain Gauges for Bridge, Tunnel & Dam Monitoring: Complete Selection Guide
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Piezometers That Match Your Monitoring Demands
Pore pressure readings can tell you a lot about what’s happening underground. In a dam, a sudden rise might signal trouble. During excavation, it could mean adjusting dewatering. Piezometers are the go-to sensors for these jobs, but the trick is choosing one that won’t drift, clog, or fail in harsh conditions. At Kingmach, we’ve spent years refining our piezometer designs based on field feedback—from vibrating wire models that deliver long-term stability to pneumatic types that avoid electrical parts in risky zones. Instead of a one-size-fits-all approach, we offer a range of configurations and work with you to adapt a sensor to your specific borehole or fill installation. With a global distribution network, we get these instruments to project sites fast, backed by engineers who know the installation pitfalls.
Technical Detail
Piezometers from Kingmach are built for geotechnical and structural monitoring where accurate pore water pressure measurement matters. One key factor is the sensor type. Vibrating wire piezometers are widely used for their low drift and ability to connect to standard dataloggers. Pneumatic piezometers work well in environments with explosion risks or high EMI. We supply both, along with strain gauge types for dynamic measurements. Each instrument goes through calibration checks before shipping, and we can deliver custom ranges, cable lengths, and fittings that match your borehole or grouting setup. A typical application? Dam safety surveillance. Embedding a series of piezometers inside an earth dam lets you track seepage patterns and core saturation. In deep excavations, monitoring pore pressures near retaining walls helps engineers adjust support pressure. Slope stability studies also rely on piezometer arrays to detect rising groundwater that triggers landslides. Our team has supported projects from consolidation monitoring beneath embankments to aquifer testing in dewatering jobs. While we don’t list every model here, the point is that we tailor the solution. Talk to us about your project parameters—measurement range, temperature exposure, required accuracy, and borehole size—and we’ll recommend a configuration that makes sense. With years of manufacturing experience, we also keep costs in check without cutting on critical components like diaphragms and seals. Post-sale, you get technical support for installation and data interpretation, and our network ensures rapid delivery in most regions.
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Products

Solid load cell JMZX-34XXHAT、35XXHAT、36XXHAT
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Earth Pressure Cell ( VW & Smart Type) JMZX-50XXAT/ ATM
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Smart Vibrating Wire PiezometerSmart Piezometers (VW) JMZX-55XXHAT
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In low-permeability materials like silts or clays, the sensor needs to respond quickly even when water flow is slow. Vibrating wire piezometers with a small diaphragm area and low volume change often work well. We can also provide push-in tips or porous stone sizes that match your soil type. Let us know the soil classification and we’ll suggest the right setup.
Yes. Cable length is a common customization. We provide armored or heavy-duty cables in the length you need, and we can pre-install connectors or splicing kits for field connections. Just specify the distance from your installation depth to the monitoring station.
Each piezometer is calibrated in our lab using a pressure manifold with multiple points across the specified range. Typical accuracy is within ±0.1% to ±0.5% of full scale, depending on the sensor type and range. We include a calibration sheet with date and serial number for your records.
We provide technical guidance for installation methods—whether you need advice on sand-packed zones, bentonite seals, or grouting. If readings drift or the signal looks noisy, our engineers can help troubleshoot wiring, datalogger setup, or possible sensor issues. We also have local distributors in many regions who can visit sites if needed.
Our vibrating wire piezometers output a frequency signal that works with most geotechnical dataloggers from brands like Campbell Scientific, RST, or Geokon. We can provide the required thermistor specifications for temperature compensation. For other sensor types, we’ll confirm output compatibility before you order.
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Mail: [email protected]
Contact Us: +8613808434127
Address: No. 188 Tongzipo West Rd, Changsha, Hunan, China