Force Balance Accelerometer AFB
Accelerometer Force Balance AFB is a high sensitivity sensor for long-term monitoring of dams and buildings, ideal for studying seismic events at low frequencies of motion.
AFB
Solgeo Models AFB Force Balance Accelerometers are high sensitivity, low noise sensors designed for use in seismic and low level, low frequency motion studies.
The accelerometers are self-contained and provide a high level, low impedance output.
No signal conditioning is required in most applications.
These sensors utilize low noise electronics in conjunction with the force balance principle to make possible measurements in the low frequency micro-G range. Aside from the traditional DC-coupled zero output, the AFB-3C& 2C & 1C also provides AC coupled zero output which eliminates tilt induced or offset errors facilitating high amplification of the basic output.
No signal conditioning is required in most applications.
These sensors utilize low noise electronics in conjunction with the force balance principle to make possible measurements in the low frequency micro-G range. Aside from the traditional DC-coupled zero output, the AFB-3C& 2C & 1C also provides AC coupled zero output which eliminates tilt induced or offset errors facilitating high amplification of the basic output.
Applications
- Long-term monitoring on dams, buildings and heritage structures
- Monitoring that requires higher sensitivity
Mines and quarries
Monuments
Dam monitoring
Seismic
and microseismic networks
and microseismic networks
Technical Characteristics
Electronic features 1,2 or 3 axis
| Ranges available | ±0,25 g, ±0,5 g, ±1 g, ±1 g, ±2 g, ±4 g |
| Output voltage | ±10 volts differential |
| Bandwidth | Standard 0-200 hz |
| Input test | 1/8 fs |
| Nominal sensitivity | 2,5 v/g |
| Orthogonality error | <0.1% |
| Dynamic range | >165db (da 0,1hz a 20hz con impostazione ±1g |
| Offset drift | 0.000001 g/° |
| Damping | 0.707 |
| Cross axis sensitivity | <0.3% |
| Non-linearity | <0,1% f.r. |
| Supply voltage | 10-15v dc (80ma for 3 axis unit) |
Environmental characteristics
| Temperature, operating | -20 to +55 deg c |
| Temperature, storage | -40 to +90 deg c |
| Humidity | 100% u.r. |
Physical characteristics
| Weight | 3 kg |
| Size | 14cm l x 15.5cm w x 8.5cm h (without connectors) |
| Case material | Aluminium |
| Protection | Ip66 (ip67, ip68 optionally) |
| Connector | Mil-c-10 |
Gallery