Accelerometer GUARDIAN
GUARDIAN MEMS seismic accelerometer is compact, flexible and reliable with user interface recording software. GUARDIAN is excellent for structural monitoring and Earthquake Early Warning.
GUARDIAN
"Guardian" is a compact accelerograph based on MEMS technology, for dynamic vibration measurements on structures in compliance with reference standards UNI 9916, DIN 4150-3, UNI 9614.
It uses flashdrives to store the accelerometer data and offers several methods of Internet connectivity. It is able to work as FTP client and server, and use standard transmission protocols, such as SeedLink for real-time data transmission to the most popular software such as Earthworm, Seislog, SeiscomP, etc.; this is thanks to the flexible and easy-to-use web user interface software.
Applications
- Building vibration monitoring
- Modal analysis
- SHM (Structure Health Monitoring)
- EEW (Earthquake Early Warning)
Civil and residential, HVSR
Technical characteristics
Technical characteristics
| Power supply | 10- 36Vdc, 1.6W power consumption (without WiFi) |
| Number of channels | 3 @ 20bit |
| Resolution | <0.2mg @ 2G full scale |
| Noise Density | < 28 mg/√Hz |
| Sampling | 50, 100, 200, 250, 400, 500, 600 Hz |
| Real Time Clock | Synchronized NTP |
| Mass storage | internal microSD and USB pen-drives (external) |
| Data format | GSEcm6, GSEint, SAC, SAF |
| Data interfaces | Ethernet 10-100 / WiFi (optional with USB dongle) |
| Triggering | STA/LTA, breadth, IP configuration and scheduled |
| Connectivity | PSTN, GSM, GPRS, SAT, WAN, LAN, etc., firewall and NAT filters thanks to VPN |
| Software | Dedicated analysis modules: Desk(for seismology), ESCAP (for engineering), possibility of actuating device control |
Sensors
| Accelerometers | MEMS |
| Dynamic range | > 80dB (peak to noise threshold) |
| Band | DC-300Hz band (maximum) |
| Cross axis sensit | 1% |
| Non linearity | 0,1% |
Physical characteristics
| Dimensions | 115 x 140 x 61 mm |
| Operating Temperature | -10/+50°C Enclosure |
| Case material | Aluminium IP44 |
| Power | AC/DC adapter, solar panels with accumulator |
| Synchronization | Via NTP (supplied on local network if required) |