
Vibrating Wire Strain Gauges for Bridge, Tunnel & Dam Monitoring: Complete Selection Guide
The global construction industry is experiencing a massive surge in large-scale infrastr...

Strain Sensors for Geotechnical and Civil Engineering
Detecting tiny deformations in a dam or bridge before they turn into structural issues is what strain sensors do best. At Kingmach, these instruments aren’t just off-the-shelf items—they’re built for the long haul in environments that challenge even the hardiest electronics. With decades spent on geotechnical monitoring, we’ve learned that no two sites are alike. That’s why our strain sensors come in multiple configurations, from embedment in fresh concrete to surface mounting on steel. We supply vibrating wire and resistive gauge types, each with their own strengths for long-term stability or dynamic measurements. Whether your project involves deep excavations, tunnels, or foundation monitoring, our team works with you to match the sensor to the real conditions—not just the spec sheet. We keep a wide range in stock and can adapt sensors to unusual geometries or cable lengths. From the first inquiry to installation support, Kingmach aims to make strain monitoring less of a guess and more of a given.
Technical Detail
Kingmach strain sensors serve as the eyes inside concrete and soil, reporting the invisible stresses that accumulate over time. We offer two primary technologies: vibrating wire strain sensors, prized for their long-term stability and immunity to electrical noise, and foil strain gauges for higher-frequency monitoring. Each sensor type can be customized: specify your range, cable length, or even the mounting method to suit borehole installation, surface attachment, or embedment in massive pours. Typical models feature stainless steel construction and IP68 waterproof ratings, allowing them to function submerged in groundwater or embedded in dam monitoring systems. Temperature compensation comes standard in our vibrating wire units, so you get strain readings that aren’t thrown off by daily thermal swings. For projects that need a complete picture, our sensors integrate with Kingmach data loggers and third-party SCADA systems. We ship globally and provide pre-sale technical consultation to verify sensor selection against your project’s expected strain levels, ensuring you get a sensor that stays within its optimal measurement range. After delivery, our support team can assist with installation best practices and troubleshooting. Given the cost of the structures these sensors protect, investing in the right strain sensor isn’t an expense—it’s a calculation that often pays for itself before the first crack ever forms.
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Products

Smart vibrating wire strain gauge (surface welded model) JMZX-206HAT
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Smart vibrating wire strain gauge (surface model) JMZX-212HAT/HB
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Smart vibrating wire strain gauge (embedment model) JMZX-215HA/215HAT/HB
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We provide two main types: vibrating wire strain sensors and electrical resistance foil strain gauges. Vibrating wire sensors are ideal for long-term embedment in concrete dams, foundations, and tunnels because they resist drift and electrical interference. Foil strain gauges work well for short-term or dynamic measurements, like load tests on piles.
Yes, customization is a core part of our service. We can adjust measurement ranges, cable lengths, connector types, and mounting hardware to fit your installation method. If you need a sensor to fit a narrow borehole or survive highly acidic soil, we’ll engineer a solution around our proven platform.
Most of our strain sensors are built to IP68 standards, meaning they can handle continuous submersion without water ingress. The stainless steel body and sealed cable connections keep moisture out, so readings remain stable even in dams, reservoirs, or fully saturated soils.
Accuracy varies by model, but our standard vibrating wire sensors typically offer precision within 0.1% to 0.5% of full scale. For critical applications, we can supply sensors with tighter tolerances. We’ll help you select a sensor with a range that keeps your expected strain in the most linear part of its measurement curve.
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Mail: [email protected]
Contact Us: +8613808434127
Address: No. 188 Tongzipo West Rd, Changsha, Hunan, China