Key Features

• Ultra low noise design digitiser
• Embedded FBA with ultra low noise and cross-axis sensitivity sensor
• FBA with robust suspension system, mass-lock not necessary
• GPS synchronised or PPS or NTP when GPS not available
• Wide power supply voltage range, embedded anti inversion and surge protections on all lines
• Internal NiMh battery for safe shutdown on power failure
• Edge-computing power that may includes alerting algorithms (i.e. P wave analysis)
• Ultra Fast SeedLink streaming protocol or custom protocols with substreaming capability
• Networking: TCP, SSH, FTP, http, ModBus, MQTT, Telnet, Telegram, SMS
• VPN ready to work behind firewalls and NAT filters
• High capacity local data storage
• Real time measurements according to the UNI9916 norm
• Automatic frequency peak-picking with frequency shifting alarm report
• Easy Web browser configuration and management
• IP68 protection grade for harsh environment use
• Response file in IRIS NRL repository

Applications

• Earthquake Early Warning Systems (EEWS)
• Operational Modal Analysis (OMA)
• Structure Health Monitoring (SHM)
• Reservoir microseismic monitoring
• Seismology
• Aftershock studies

Technical specifications

• Power supply: 9-36Vdc, optional internal backup UPS battery (to be requested at order)
• Power consumption: < 3.2W in standard working mode (GPS on, real time streaming, memory writing)
• Number of channel: 3 with Sigma Delta high resolution ADC (24 bit or 32 bit system upon order)
• Input range: typical on board selectable 0.8, 1, 2, 4g (customization possible, ask to us for details)
• Dynamic range: 144dB system, 141dB Peak over RMS noise at 2g and 100 SPS, 32 bit system version available with up to 162dB dynamic range
• Sampling rates: 1,2,5,10,20,50,100,200,250,300,400,480,500,600,800,1000,1500 Hz
• Anti Aliasing Filter: Analog and Digital (FIR) both customizable upon request
• Offset compensation: by software with various options selectable from web control panel
• Real Time Clock: GPS disciplined clock +/- 10ppm -20/+50°C
• RTC Accuracy: down to 1µs to the respect of UTC with SPLL locked and PPS available
• GPS Antenna: external with coaxial cable of 10 meters and BNC connector
• GPS type: Multiconstellation receiver unit with status, coordinates, elevation, nr. of satellites
• Messaging: Telegram alerting for groups, message bot or SMS
• Data Links: Ethernet 10/100, RS232, RS485 (optional)
• Mass Memory: microSD and USB
• Data Format: GSEcm6, GSEint, SAC, SAF, miniSEED
• Recording: continuous and/or on-event trigger
• Triggering: multimode STA/LTA, amplitude, IP voting and scheduled; fully independent, high/low/band pass filter; pre/post event: 1 to 10000 seconds
• Status of health: Memory, Power, Vref, test pulse for sensors, peers status (if some units are connected together in voting systems)