Seismograph and accelerograph Guardian BB
The broadband seismograph/accelerograph Guardian BB is compact, flexible and reliable, equipped with recording software with a web user interface.
Guardian BB
Guardian BB is ideal for structural monitoring of buildings with threshold-exceeding alerts.
The unit combines a Class 1 triaxial seismograph with a low-noise MEMS accelerograph (0.7 μg/√Hz), making it ideal for high-precision dynamic analysis. The geophone array is linearized from 1 Hz, ensuring accurate data even at low frequencies. The device is fully compliant with the main reference technical standards for structural vibrations: DIN 4150-3, DIN 45669-1, and UNI 9916.
Optional configurations
- Power over Ethernet (PoE)
- Internal battery (up to 10 working hours)
Applications
- HVSR Measurement
- Civil Monitoring
- Seismic Networks
- Modal analysis (OMA)
Tunnel
Mines and quarries
Seismic and microseismic networks
Civil and residential
Monuments
Caratteristiche tecniche
Technical characteristics seismograph
| Sensor type | Electronically equalized geophone |
| Number of axes | 3, orthogonally oriented |
| Measure range | ± 12,5, ± 25, ± 50, ± 100mm/s |
| Sensitivity | 40, 80, 160, 320 V/m/s |
| Frequency response | 1Hz ÷ 80HZ @200Sps, 1Hz ÷ 125Hz @500/1000sps |
| Dynamic range | >130 dB |
Technical characteristics accelerograph
| Sensor type | MEMS accelerometer |
| Number of axes | 3, orthogonally oriented |
| Measure range | ± 3g |
| Frequency response | 0Hz ÷ 80Hz @200Sps, 0Hz ÷ 125Hz @500/1000sps |
| Dynamic range | 120 dB @25Sps; 108.5dB @250Sps>130 dB |
| Noise density | 0,7μg/√Hz typ. |
General characteristics seismograph and accelerograph
| Samples rate | 10, 25, 50, 100, 200, 250, 500, 1000sps |
| Resolution | 32 bit |
| Timing | internal GNSS receiver, NTP, 0,5ppm drift free run RTC |
| Recording Mode | Continuous recording with SeedLink Protocol. Configurable event recording when thresholds are exceeded with selectable pre-/post-trigger length. Recording of signal statistics (min, max, average, RMS) with selectable intervals from 10 to 100s. |
| Data Storage | 32 GB internal microSD |
| File formats | Solgeo EVE, MiniSEED, Ascii, CSV |
Environmental characteristics
| Operating Temperature | -20 ÷ +70 °C without internal battery -20 ÷ +50 °C with internal battery* |
| Storage Temperature | -40 ÷ +90 °C without internal battery -20 ÷ +50 °C with internal battery |
| Humidity | 0-100% |
| * during battery charge, the recommended temperature range is less extensive |
Physical characteristics
| Weigh | 4Kg |
| Dimensions (LxPxA) | 160 mm L x 160 mm W x 130 mm H |
| Enclosure | Aluminium cabinet, painted |
| IP grade rating | IP67 |
Gallery