GeoSIG albris - GMS series

Key Features

  • Sensor dynamic range 165 dB
  • Bandwidth from DC to 200 Hz
  • Extraordinary offset stability
  • Temperature and drift compensation
  • Software selectable Full Scale
  • Integrated bubble level
  • Full remote management
  • Low noise 32-bit digitiser per channel
  • Up to 5000 sps sampling rate
  • Power over Ethernet (PoE)
  • Wired or optionally Wi-Fi communication
  • Built-in time receiver module (GNSS optional)
  • Internal storage up to 128 GB optionally
  • Internal LiPo battery up to 2 h autonomy, optionally
albris - GMS series


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albris is a compact, full-featured digital accelerograph.
Well-established performances of our true electro-mechanical force balance accelerometer AC-7x series and our low noise powerful recorder GMS series are now merged together as a state-of-the-art instrument.
Highly optimised cost of ownership and user-friendly design make the albris the perfect choice for any application.

  • SENSOR

  • Axis:
  • Triaxial, optionally biaxial or uniaxial
  • Full scale
  • ± 0.5, 1, 2 or 4 g, user selectable via software
  • Type:
  • True electro-mechanical force balance accelerometer
  • Dynamic range:
  • 165 dB (per bin rel. full range)
    156 dB (per bin rel. full scale RMS)
    134 (0.02 - 50 Hz, integrated PSD)
  • Nonlinearity:
  • < 0.1 % 
  • Cross-axis sensitivity:
  • < 0.5 % 
  • Bandwidth:
  • DC to 200 Hz
  • Damping:
  • 0.7 ± 0.1 critical
  • Offset drift:
  • 0.0005 g / °C
  • Span drift:
  • 200 ppm / °C
  • Hysteresis:
  • < 0.001 % of the full scale

  • Digitiser

  • Analog-to-Digital converter:
  • 3 individual per channel 32-bit sigma-delta ADC
  • Sampling rate
  • Standard 1000 sps or up to 5000 sps optionally
  • Dynamic range:
  • 158 dB (per bin rel. full scale RMS)
    130 dB (wide band 0 to 500 Hz)
    141 dB (0.02 - 50 Hz, integrated PSD)
  • Bandwidth:
  • 0 - 1000 Hz. Other bandwidth customisations are available on request.

  • Recording, Streaming, trigger and realtime calculations

  • Event recording:
  • Freely user configurable pre-post event time
  • Continuous recording:
  • Freely user configurable file duration and channel selection
  • Data streaming:
  • Realtime continuous GSBU, SEEDLink, Earthworm
  • Trigger filter and level:
  • Fully independent high-, low-, or bandpass trigger filters.
    Freely user configurable thresholds.
  • Trigger types:
  • Threshold, STA/LTA, manual, at start-up, at given date/time, over TCP/IP network voting logic
  • STA/LTA:
  • Freely user configurable with or without clamping
  •  
  • Realtime single / double integration, differentiation, HP/LP/BP filtering, decimation, peak / average calculations on physical sensor data can be provided as virtual data channels, which can be exploited exactly as, and synchronous to, physical sensor data. All the recording, triggering and streaming functions can be used on all physical and virtual channels.

  • Storage Memory

  • Size:
  • 8 GB, higher capacity up to 128 GB available optionally
  • Recording format:
  • Standard miniSEED or Extended miniSEED
  • Storage management:
  • Intelligent quota management based on user policy to define reserved space per file type
  • Estimated capacity:
  • Sampling rate [sps] x 0.4 [MB / day / 3 channel]

  • Time Synchronisation

  • Internal clock:
  • Intelligent Adaptive Real Time Clock (IARTC)
  • Sources:
  • NTP, optionally GNSS (GPS, GLONASS, BeiDou, and Galileo)
  • Drift rate:
  • < 0.02 ppm @ constant +25 °C
    < 0.1 ppm @ -20 to +70 °C
  • Accuracy:
  • < 0.5 ms (NTP), < 0.1 microseconds  (GPS)

  • Communication and Connectivity

  • Network interface:
  • 10/100BASE-TX, optionally Wi-Fi (b/g/n)
  • Network protocols:
  • Fixed or Dynamic IP, OpenVPN support, SSH, FTP/SFTP, HTTP (web interface), GeoDAS, for management and data
  • Connectors:
  • Power input and output, Ethernet (PoE), USB console, optionally GNSS antenna, Wi-Fi antenna

  • Power

  • Input voltage:
  • 9 – 48 VDC or PoE mode A and B
    Can provide power to external accessories.
  • Consumption:
  • < 3.5 W, excluding external accessories. Average power consumption in steady state with active network communication; min 2.8 W, max 4 W.
  • Protections:
  • Reverse polarity, Over/Under voltage, self-resettable
  • Backup Battery:
  • Internal LiPo battery optionally, 1500 mAh, 2 h autonomy. Higher autonomy is available with external batteries.

  • Physical and environmental

  • Type:
  • Aluminium housing
  • Size:
  • 205 x 120 x 105 mm. Recommended installation space: 300 x 120 x 105 mm
  • Weight:
  • 4 kg
  • Ingress Protection:
  • IP65 (NEMA 4) or optionally IP67 (NEMA 6)
  • Mounting:
  • Single bolt, surface mount, adjustable within ± 10°
  • Temperature Range:
  • -20 to +70 °C (operating)
  • Humidity:
  • 0 to 100% (non-condensing)
  • MTBF:
  • > 500'000 hours (based on AC and GMS series)

  • ***********************************************************************************

  • Orientation, Mounting, Protection and Performance

  • Optional orientation:
  • Wall mounted (-W); ceiling mounted (-C)
  • SEN-WALLBRACKET:
  • L angle for wall mounting, 150x150x10mm
  • HOU-SEN-SS:
  • Stainless steel protective enclosure
  • AC-IP67:
  • IP67 (NEMA) protection
  • Performance:
  • Custom bandwidth or full scale

  • Internal Modules

  • GMS-TIMi:
  • Internal GNSS time receiver, incl. 5 m cable with antenna
  • GMS-WiFi:
  • Wi-Fi network module, incl. antenna
  • albris-IB:
  • 1500 mAh internal LiPo battery (A)
  • MEM-MSDXXXG:
  • Storage memory sizes 32, 64 or 128 GB

  • cables and connectors

  • xxx-WIR--- (B):
  • Power supply cable for external accessories
  • xxx-WIR---PoE (B):
  • Ethernet and PoE cable
  • xxx_ANT (B):
  • GNSS antenna with 5 m cable

  • External Accessories

  • xxx-PSU:
  • Universal Power Supply, 90 - 260 VAC / 50 - 60 Hz
  • BAT-Exxx:
  • Batteries from 7 to 100 Ah
  • GXX-4GMX:
  • 4G router
  • ETH-T1L:
  • Long distance Ethernet module

  • GMSplus series are produced in different types to suit particular specifications or regulations. Specifications mentioned here may be different among different types.

    (A) If installed, the operating temperature range is from 0 to + 50 °C
    (B) Cable length and wire termination can be customised according to customer's requirements.

    * Specifications subject to change without notice