Dytran variable capacitance (VC) accelerometers offer exceptional measurement accuracy and robust packaging for reliable operation in harsh environments.
They are used in dynamic applications across various industries, including flight test, transportation environment replication, simulation, modal & structural analysis, ride quality, road load, tilt and inclination measurements.
Key features & benefits
Variable Capacitance (VC) MEMS accelerometers are specifically engineered to measure low-frequency and static acceleration. They operate by detecting changes in capacitance as a micro-machined mass moves between fixed internal plates.
DC Response (0 Hz Capability)
Unlike piezoelectric sensors that only detect changes in motion, VC MEMS can measure constant acceleration, such as gravity or centrifugal force. This makes them essential for measuring tilt, inclination, and steady-state motion.
High Sensitivity to Low-Level Motion
They offer exceptional sensitivity for low-frequency events, making them ideal for monitoring the slow swaying of skyscrapers, the steady vibration of aircraft wings, or vehicle suspension performance.
Outstanding Thermal Stability
Many VC MEMS sensors feature internal temperature compensation. This ensures accurate readings across wide temperature ranges, often with thermal shifts as low as 1.5%.
Ruggedness and Survival
Despite their precision, these sensors are highly durable. They often feature gas damping to protect the internal silicon structure from mechanical shock, with some models surviving impacts up to 10,000 g.
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Which applications are Variable Capacitance MEMS Accelerometers used for?
Variable Capacitance (VC) MEMS accelerometers are primarily used for applications requiring low-frequency measurement and DC response (0Hz), such as detecting tilt, slow movement, and constant acceleration.
- Aerospace & Flight Testing: Aircraft flutter testing, launch vehicle monitoring, avionics and navigation
- Automotive & Transportation: Ride quality & suspension, safety systems and road load data acquisition
- Civil Engineering & Structural Monitoring: Structural health monitoring, bridge deflection and seismic detection
