Guardian DA and DA-Plus

Product catalog summary

Overview: The Guardian DA and DA-Plus accelerographs are compact, flexible, and reliable devices designed for structural monitoring. They are equipped with recording software and a web user interface, making them ideal for monitoring buildings and providing alerts when thresholds are exceeded.

Specifications: Both models use MEMS technology and comply with DIN 4150-3 and UNI 9916 standards. They feature flash memory for data storage and offer various Internet connectivity options, including FTP/SFTP and real-time data transmission via SeedLink. The devices are managed through the Seismic Web Configurator (SWC), which provides real-time status, data management, and waveform display.

Models:

Guardian DA: Suitable for general use with good dynamics, available with full scales of 2g, 4g, and 8g. It is cost-effective and applicable for civil, bridge, and viaduct monitoring.
Guardian DA-Plus: Offers excellent dynamics and high sensitivity, suitable for microseismic applications, including civil and monument monitoring, with a full scale of >10g.

Applications: Vibration monitoring, Modal Analysis (OMA), Structure Health Monitoring (SHM), and Earthquake Early Warning (EEW).

Technical Characteristics:

Sensor Type: MEMS accelerometer with 3 orthogonally oriented axes.
Measurement Range: Guardian DA: ±2g, ±4g, ±8g; Guardian DA-Plus: >±10g.
Sample Rate: 10 to 1000 sps.
Resolution: Guardian DA: 20 bit; Guardian DA-Plus: 28 bit.
Dynamic Range: Varies by model and sample rate.
Data Storage: 32 GB internal microSD.
Communication: Ethernet and WiFi.
Power Supply: 8 to 32 VDC, with typical power consumption of 1.1W at 12V.

Environmental Characteristics:

Operating Temperature: -20 to +70 °C without battery, -20 to +50 °C with battery.
Storage Temperature: -40 to +90 °C without battery, -20 to +50 °C with battery.
Humidity: 0-100%.

Physical Characteristics:

Weight: 1.2 Kg.
Dimensions: 130x160x80 mm.
Enclosure: Aluminium cabinet, IP67 rated.

Optional Configurations: Power over Ethernet (PoE), internal battery for up to 20 hours, and internal GNSS receiver for time synchronization.

Contact Information: Solgeo S.r.l, Via Pastrengo, 9, 24068 Seriate (BG, Italy). Email: [email protected], Phone: +39 035 4520075.

Catalog excerpts

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)

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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...

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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...

Open the catalog to page 3