GUARDIAN DA and DA-PlusACCELEROGRAPH The accelerograph Guardian DA is compact, flexible and reliable, equipped with recording software with a web user interface. Guardian is ideal for structural monitoring of buildings with threshold-exceeding alerts Guardian is a compact accelerograph based on MEMS technology for dynamic measurements on structures in compliance with the reference standards DIN 4150-3 and UNI 9916. It uses flash memory to store acceleration data and offers various Internet connectivity methods. It can function as an FTP/SFTP client and SFTP server and use standard transmission protocols, such as See-dLink for real-time data transmission to popular software applications including SeisComP, Sworm, etc. The device is managed via Seismic Web Configurator (SWC), an intuitive and highly usable web interface that allows complete device configuration and provides real-time operating status, data management, and waveform display. The operating status is indicated by LED indicators. Threshold exceedance notification is provided via email and/or a dedicated digital output. Two models are available: Guardian DA, for general use, characterized by good dynamics, allows use in a variety of situations, from civil monitoring to bridge and viaduct monitoring. Available with a full scale of 2g, optionally 4 and 8g, it also stands out for its competitive price. Guardian DA-Plus stands out for its excellent dynamics and high sensitivity, allowing it to be used in microseismic applications, from civil monitoring to monument monitoring. Available with a full scale >10g. • Vibration monitoring on buildings • SHM (Structure Health Monitoring) • EEW (Earthquake Early Warning)

GUARDIAN DA ACCELEROGR APH TECHNICAL CHARACTERISTICS Sensor type MEMS accelerometer Measure range Samples rate Dynamic range Noise density Cross Axis Sensitivity Offset drift vs temp. Full scale drift vs. Temp. Internal 0.5ppm drift free run RTC, NTP, optional internal GNSS 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 File formats Solgeo EVE, MiniSEED, Ascii, CSV Ethernet...

GUARDIAN DA-Plus ACCELEROGRAPH TECHNICAL CHARACTERISTICS Sensor type Number of axes Measure range Samples rate Resolution Dynamic range Noise density Cross Axis Sensitivity Non-linearity Offset drift vs temp. Timing MEMS accelerometer 3, orthogonally oriented > ±10g Internal 0.5ppm drift free run RTC, NTP, optional internal GNSS 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...

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