AA222 Tri-Axial Force Balance Accelerometer (FBA)
AA222 is a tri-axial FBA (Force Balance Accelerometer) with +/-10V voltage outputs. Its dynamic range can be better than 150dB and it is suitable for various applications, such as EEW (Earthquake Early Warning), seismic hazard prevention, as well as RSDH (Rapid Structural Health Diagnostic). AA222 is an easy-to-use, reliable, and robust accelerometer, using IP67 waterproof aluminum alloy enclosure to ensure its performance for all environments.
OVERVIEW
Description
The AA222 accelerometer provides precise analog voltage output compatible with most industry-standard data recorders. When combined with triple-channel recorders, it forms the FA330 Integrated Seismograph, offering a complete solution for structural and seismic monitoring.
The sensor includes a mounting tenon, alloy expansion screw, level bubble, and adjustment screws, ensuring perfect leveling and tight contact with the surface—whether wall-mounted or ground-mounted. This guarantees high-fidelity data acquisition and reliable long-term stability for seismic and vibration monitoring projects.
Key Features
- High Dynamic Range: >150 dB for accurate motion detection
- Analog Voltage Output: ±10 V compatible with multiple recorder brands
- Rugged & Waterproof: IP67-rated aluminum alloy enclosure for harsh conditions
- Flexible Mounting: Supports wall and ground installations
- Precision Alignment: Built-in level bubble and adjustment screws for optimal setup
Applications
- Earthquake Early Warning Systems (EEWS)
- Seismic Hazard Prevention
- Rapid Structural Health Diagnostics (RSHD)
- Industrial Disaster Prevention
- Structural and Civil Engineering Monitoring
Ideal for
- Residential and commercial buildings
- Bridge and transportation infrastructure
- Earthquake and vibration monitoring networks
- Research laboratories and field observatories
Product Specification
| Sensor Type | Force Balanced Accelerometer |
| Power Supply | 12 VDC |
| Measuring Range | ±2 g (0.5, 1, or 4g) |
| Power Consumption | 80mA@12V |
| Bandwidth | DC – 200 Hz |
| Operating Temperature | -20 °C to 70 °C |
| Dynamic Range | > 150 dB (0.1Hz – 20Hz with 2g full scale) |
| Waterproof | IP67 |
| Noise Level | 0.0633 μg / Hz |
| Dimension (L x W x H) | 205 x 160 x 80 mm |
| Output | ±10 V fully differential (50ohm) |
| Weight | 2.6 kg |
| Sensitivity | 20, 10, 5, 2.5 V/g |
*All prices, features, and specifications are subject to change without prior notice.
















