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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...
Piezoelectric Accelerometers That Work Where You Need Them
piezoelectric accelerometers
Vibration measurement in industrial environments often comes down to the sensor—too fragile, and it fails; too bulky, and it misses the details. Piezoelectric accelerometers have earned their place by handling wide frequency ranges and tough conditions without adding much mass. Kingmach has been supplying these sensors for years, with a focus on geotechnical and structural monitoring. Our range covers general-purpose units, low-frequency types for seismic work, and high-temperature variants. The piezoelectric element inside converts mechanical stress directly into charge, so no external power is needed for the sensing part. That makes them naturally suited for long-term installations where running power lines is a headache. From bridge health assessment to turbine vibration checks, engineers pick these sensors because they deliver consistent data over time. Kingmach also offers custom mounting adapters and cable assemblies to match your existing hardware, saving retrofitting time.
Technical Detail
Configured around process stability, mold life, and long-term uptime.
Kingmach Measurement & Monitoring Technology Co., Ltd. builds piezoelectric accelerometers with an eye on field practicality. Our sensors use shear-type designs to minimize base strain and thermal transients—common issues in outdoor monitoring. The sensing elements are housed in stainless steel, with IP67 or higher sealing as standard, so a bit of rain or dust won’t throw off your data. Sensitivity options typically span from 10 mV/g for general vibration to 500 mV/g for low-level seismic applications, while frequency response can extend from 0.1 Hz to over 10 kHz depending on the model. For high-temperature use, charge-mode accelerometers with ceramic sensing elements are available, allowing operation up to 250°C without signal degradation. All units come with TEDS capability on request, simplifying setup with compatible data loggers. As a professional manufacturer of geotechnical instruments, we also provide customization services—different connector types, integral cables, or specific mounting configurations to fit project demands. Our global distribution network and dedicated technical support aim to reduce lead times and keep your monitoring projects on track, whether you’re instrumenting a dam or a machine foundation.
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FAQ
Common technical questions
What's the real difference between a piezoelectric accelerometer and a MEMS type?
The short answer: piezoelectric sensors generally handle higher frequencies and temperatures better, while MEMS accelerometers are often cheaper and can measure down to DC. For structural health monitoring above 0.1 Hz, piezoelectric units are more common because they’re tougher and have lower noise at higher frequencies.
How do I choose the right sensitivity for my application?
It’s a trade-off between signal strength and bandwidth. If you’re measuring low-level vibrations—like building sway—a 500 mV/g sensor gives you cleaner data without cranking up the amplifier. For machinery vibration with higher g levels, a 10 mV/g sensor avoids saturation. Consider your expected acceleration range first.
Can your accelerometers handle extreme temperatures?
Yes, our charge-mode models with ceramic elements operate reliably up to 250°C. For temperatures above that, we can discuss custom solutions. Note that the charge amplifier and cabling also need to be rated accordingly, and we can supply matching accessories.
Does Kingmach offer custom cabling or mounting for existing setups?
We do. Many projects use non-standard threads or need armored cables. Provide your specs, and we can integrate custom connectors, lengths, and mounting brackets. This often saves time compared to redesigning the sensor attachment point.
What's the typical support process after purchase?
You’ll get direct access to our applications engineers. We help with installation guidelines, signal conditioning setup, and troubleshooting. For large-scale deployments, we can offer on-site training and calibration checks through our service network.
Need a solution for your project?
Share your product type, target capacity, and application requirements. Our team can review the details and recommend a practical next step.