Triaxial MEMS Accelerometer — Precision Motion Intelligence
High-accuracy 3-axis accelerometer for precision measurement of acceleration, tilt, and low-frequency vibration across bridges, tunnels, buildings and machinery. ±16g range, IP65 rated, with LoRaWAN connectivity.
Accelerometer Model 4030
Triaxial MEMS DC Accelerometer
±2g / ±6g Range OptionsMeasure the Movements That Matter
The Model 4030 Triaxial MEMS DC Accelerometer is engineered for precision measurement of acceleration, tilt, and low-frequency vibration across bridges, tunnels, buildings, and machinery. With ±2g and ±6g dynamic range options, it captures subtle and dynamic movements alike — from structural deflection to machine vibration.
A rugged, molded nylon housing, brass mounting inserts, and a shielded six-conductor cable ensure durability and clean data transmission. Its integrated low-pass filter and self-test function make it ideal for permanent installations and smart infrastructure networks.
Low-noise signal output, factory calibrated
Built-in verification for reliable operation
Integrated filtering for clean data
5 – 30 VDC input flexibility
Key Benefits
Detect subtle motion, vibration, or settlement before they escalate into costly damage.
High-fidelity MEMS sensors deliver consistent, drift-free acceleration data with factory calibration.
On-device algorithms and connected gateways ensure rapid event detection and reduced false alarms.
Automated dashboards and integration-ready alerts streamline decision-making for asset managers.
What Makes Our Accelerometer Different
Purpose-built for precision motion monitoring with edge intelligence and robust field-ready design.
3-Axis MEMS Technology
High-resolution triaxial capacitive MEMS sensing across X, Y, and Z axes. Converts even the smallest accelerations into stable electrical signals with internal filtering and temperature compensation.
Dual Range Options
Available in ±2g and ±6g dynamic range options to suit different applications — from subtle structural deflection to more dynamic vibration and machinery monitoring.
Rugged IP65 Design
Sealed IP65 housing with molded nylon construction and brass mounting inserts. Operating temperature range of −40°C to +80°C for harsh outdoor and industrial environments.
Long-Range Connectivity
Integrates with GeoNet LoRaWAN, Cellular, Wi-Fi, and Satellite data loggers for flexible long-range data transmission directly to your cloud dashboard.
PPV & MTVV Modes
Dual operation modes — PPV-based for peak particle velocity and MTVV-based for whole-body vibration assessment. Covering 0.5 – 250 Hz frequency range.
Integrated Self-Test
Built-in self-test function and low-pass filter ensure reliable operation and clean data transmission. Shielded six-conductor cable for noise-free signal output.
Where Our Accelerometers Deploy
Deploy Sentra accelerometers wherever precise vibration or motion tracking is critical to safety and performance.
Bridge Monitoring
Traffic-induced vibration, dynamic load testing and structural deflection monitoring on road and rail bridges for continuous structural health assessment.
Buildings & High-Rise
Seismic response monitoring, wind-induced sway and floor vibration measurement in high-rise structures during construction and service life.
Tunnels & Metro
Vibration monitoring in tunnelling operations — real-time data from excavation face through to final lining installation and operational phase.
Industrial Machinery
High-frequency vibration monitoring on rotating equipment, compressors, pumps and turbines for predictive maintenance and fault detection.
Mining Operations
Blast vibration monitoring, slope stability and seismic response in open-pit and underground mining environments.
Wind Turbines
Tower vibration and foundation monitoring on onshore and offshore wind installations throughout their operational lifecycle.
Accelerometer Specifications
| Sensor Type | 3-axis MEMS accelerometer |
|---|---|
| Operation Modes | PPV-based and MTVV-based |
| Sampling Rate | 1000 Hz derived from a 4 kHz signal |
| Noise Floor | 22.5 μg/√Hz |
| Original Frequency Band | 0.5 – 250 Hz |
| Power Source | 1 × 3.6 V D-size replaceable battery |
| Data Transmission | LoRa radio communications (ISM sub GHz) |
| Operating Temperature | −40°C to +80°C |
| Wireless Protocol | LoRaWAN |
| Weather Protection | IP65 |
| Detailed Specifications | |||||||||||||||||||||||||
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PPV Range: 0–40 mm/s
Accel Range: ±4g
Temp: −40°C to +80°C
Protection: IP65
|
Battery:
10 min: 5 yr / 10 mo
20 min: 9 yr / 1.4 yr
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Need the full technical details?
Complete specs, diagrams, and product data sheet
Got Questions About Our Accelerometer?
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Sentra accelerometers capture acceleration, vibration, and tilt — offering a complete picture of how a structure or machine responds to dynamic loads, traffic, or seismic activity.
A precision capacitive MEMS element converts even the smallest accelerations into stable electrical signals. Internal filtering and temperature compensation ensure clean, drift-free measurements.
Yes. Sentra accelerometers integrate with GeoNet LoRaWAN, Cellular, Wi-Fi, and Satellite data loggers for long-range, low-power communication directly to your cloud dashboard.
The sensor operates on 5–30 V DC and consumes minimal power. When paired with Sentra's low-power edge devices, the system can run autonomously for years with routine inspections only.
Absolutely. It's designed for hybrid monitoring — combining acceleration data with strain, tilt, or displacement sensors to create a complete digital twin of structural behavior.
They are ideal for bridges, tunnels, buildings, industrial foundations, seismic stations, and smart city assets — anywhere precise vibration or motion tracking is critical to safety and performance.