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e-QUAKE-ACC

ACCELEROMETER AND STRONG MOTION RECORDERS
  • 24 Bit ADC
  • Internal Accelerometer
  • Micro-G Resolution Acceleration Measurement
  • Direct – GPS Technology
  • 24 Bit ADC
  • 130 nano-g/ Root Hz- Ultra Low Noise
  • 140 dB Sensor Dynamic Range
  • Dual-ARM Processor
  • Embedded Linux
  • EASY-REC Recording Technology
  • Ethernet And TCP/IP Easy Access
  • High Capacity USB Storage
  • New and Innovative Technological Design Platform
  • High Benefit/ Cost Rate
  • Robust and Portable Design
  • No Mass Locking
  • High Tolerance to InstallationTilt Errors

  • Overview
  • Technical Specifications
  • Product Pdf
e-QUAKE ACC

ACCELEROMETER AND STRONG MOTION RECORDERS

e-QUAKE ACC Series has been designed with an innovative and state of art technological
approach.These accelerometers and strong motion recorders are developed at 2
different sensitivity levels, as ultra–low noise and low noise. Both versions include uni,
bi and tri component options.
 
e-QUAKE-ACC-21/22/23 provides a flawless measurement possibility with an ultra
low noise level of only 130 nano-g/root-Hz. This version is based on force-balance and
force-feedback technology. It is possible to measure accelerations at micro-g level with
this device. In this form, e-QUAKE-ACC-2X series is an ideal solution for strong motion
measurements, seismic networks, structural health monitoring under ambient vibration
and microtremor measurements.
 
Although the noise level of e-QUAKE-ACC-01/02/03 series is slightly higher when
compared to the other version, this model is still very sensitive and and offers an
important cost-benefit advantage. In addition to widespread practices such as geological
surveys, mining, oil engineering and explosion measurements, it is frequently used in
applications such as factory vibration monitoring or Structural Health Monitoring on
bridges.

FILEDS OF APPLICATION
 
Seismic Strong Motion Monitoring Networks
Structural Health Monitoring / Ambient Vibration
Wireless Structural Health Monitoring
Dynamic Identification
7/24 Real-Time Structural Health Monitoring
Monitoring of Historical Structures
Monitoring of Bridges and Tunnels
Micro-Tremor Measurements
Geological Surveys / Mining / Oil Industry
Factory Vibration Measurements
Explosion Monitoring

TECHNICAL SPECIFICATIONS

  e-QUAKE-ACC-21/22/23 e-QUAKE-ACC-01/02/03
ADC Resolution
24 Bit
 
 
Synchronization GPS based simultaneous sampling – independent ADC/ channel
 
Sampling Speed 1 kHz, 500 Hz, 200 Hz, 100 Hz, 50 Hz, 20Hz, 10 Hz, 5Hz, 1Hz (2kHz/4kHz)
 
Axis (Number ofComponents)

1/2/3
 
Dynamic Interval / Inner Noise           
140 dB / 1.2 micro-Volt RMS
 
Acceleration Measurement Interval
 
± 2 g
 
+-2g / +-5g / +-10g / +-20g / +-50g
 
Frequency Bandwidth
 
DC - 120 Hz
 
DC - 400 Hz, ±2 g version
 
Accelerometer type
 
Force Balanced – Force Feedback
 
Nitrogen Damping
 
Accelerometer Noise Level
 
140 dB 130 ng√Hz
 
5 μg/ Hz, ±2 version
 
Axis Sensitivity
 
0.002 g/g
 
0.02 g/g
 
Alert / Calibration

Voltage – temperature – GPS – RAM status/ independent calibration/ channel –
automatic /sine / square /user-defined
Mechanical Shock Resistance
2000 g
 
Analog Filter Anti-aliasing / Low-pass
 
DSP Oversampling / downsampling / decimation / digital filtering
 
Operating System Dual ARM Processor - Embedded Linux - Real-Time calculation features
 
Communication Interface
Ethernet TCP/IP-ADSL-3G / WIFI connection ready – data loss preventing
communication algorithm /RS232-optional
Data Storage
 
USB - flash memory (4GB - 8GB - 16GB)/ triggered recording / STA/LTA/Other
 
GPS Functionality

Time – coordinate info, uninterrupted internal oscillator
signal when GPS signal is lost
Remote Connection
 
TCP/IP - FTP Server - seedlink server* - web server
 
Lightning Protection Independent protection for each channel
 
Operating Voltage, Optional Uninterrupted Li-Ion / Lead Acid Battery support
 
Operating Temperature -40 °C ~ +70 °C
 
Enclosure / Connector


 
Stainless steel enclosure / IP67 connectors(optional- military grade connectors /
IP67 enclosure)