New Product Annoucement-
American Geophysical Union announced its new product - Broadband Seismometer
In the largest Geophysics conference in the world in December of 2019, The American Geophysical Union's 100th anniversary, GeoSIG released its newest product- arolla- VE series- Broadband seismometer.
Broadband seismometer
arolla is a broadband seismometer with 1200V/m/s output sensitivity, 120s(0.00833Hz) to 50 Hz bandwidth. Designed and handmade in Switzerland, arolla broadband seismometer is the culmination of years of experience designing high precision, low noise, and reliable seismic equipment. arolla's versatile, compact, lightweight, and rugged design, make it an ideal choice for many applications and use cases.
From the beginning, the design goals for the arolla seismometer were to make the most accurate, most reliable, easy to use/deploy, and consistent quality sensor on the market. Its triaxial design, wide temperature range, low temperature sensitivity, magnetic shielding, precision factory calibration of the sensor response, and robustness help to achieve these goals and beyond.
The introduction of arolla marks the launch a new series of seismometers by GeoSIG, which will be complemented with further exciting products. arolla will also be available in a posthole version
Product features:
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Precision calibration of sensor response
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Flat response from 120 seconds to 50 Hz
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Automatic leveling and mass centering; remote mass centering available
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No mass locking needed
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Electromagnetic shielding
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Corrosion resistant and robust housing
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Output sensitivity of 1200V/m/s
Typical applications:
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Study of local, regional, and teleseismic events
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National Seismic Networks
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Earth mode observations
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Site surveys
Specifications:
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Technology
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Feedback:
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Electromagnetic force balance with capacitive transducer
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Topology:
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Orthogonal triaxial X,Y,Z
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Mass centering:
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Automatic at power-up
Automatic or manual during operation;
Can be remotely initiated
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Performance
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Sensitivity:
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1200V/m/s ±0.5% factory trimmed
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Self Noise:
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Below NLNM from 35 sec to 10 Hz and within 3 dB of NLNM at 120 sec
See plot
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Bandwidth:
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120 sec (0.00833 Hz) to 50 Hz
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Cross axis:
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≤ 1% coupling; Including misalignment from axis to case reference
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Clip level:
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17 mm/s up to 1 Hz
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Temperature:
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No re-centering required within ±45 °C
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Power supply
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Type:
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Isolated 9 to 36 VDC
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Consumption:
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<1 W typical at 12 VDC
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Protection:
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Over voltage, reverse voltage, ESD, complies with EMC CE
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Physical & Environment
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Material:
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Lightweight aluminum and rigid stainless steel construction
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Diameter:
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250 mm
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Height:
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250 mm incl. feet & handle
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Weight:
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< 10 kg (< 9.8 liter)
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Ingress:
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IP68 and NEMA6P;
Survives brief periods of submersion to 1m depth
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Operating temp:
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-20 to 60 °C
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Humidity:
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0 to 100% non-condensing
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Shock:
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MIL STD 810G - 516.6 - Shock (air transport)
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Installation
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Maximum tilt:
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± 2°
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Orientation:
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Floor mount with bubble level,
leveling spiked-feet with lock,
NS indicator with groove
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Data recorder- nair(GMS series)
With its optimized installation, operation and maintenance philosophy nair offers the real possibility to measure any dynamic motion with an abundance of features and options.
Highly reduced cost of ownership and user-friendly approach in the design make nair the perfect choice for the most advanced user .
Special features:
Ø Modular electronics for field repair and upgrade
Ø 3 or 6* channels, up to 5000* sps sampling rate
Ø Low noise individual 32-bit Δ−Σ ADC per channel
Ø Internal built-in and/or external sensor options
Ø Wired, Wi -Fi*, GSM*, satellite* links
Ø Power-Over-Ethernet and wide power range
Ø Smart satellite* or network timing
Ø USB for storage and communication devices*
Ø Continuous data recording to ringbuffers
Ø Flexible configuration of multiple triggers
Ø Simultaneous data streaming to several clients
Ø Virtual signals from realtime processed sensor signal
Ø Rugged aluminium housing with easy installation
Ø Web Interface compatible with smartphones / tablets
Ø Simple and secure remote access over Internet
Ø Alarm output with up to 4 dry-contact relays*
Ø Internal battery*, low power consumption
Ø Hot swappable SD card
Ø Third generation of NetQuakes Recorders
Applications:
Ø Seismic and Earthquake Recorder
Ø Structural Health Monitoring
Ø Real-time Seismology for Free-field and Urban Areas
Ø High Density Earthquake Monitoring Networks
Ø Shake / Hazard Mapping based on Instrumental Data
Ø Earthquake Early Warning and Rapid Response
Ø Damage Estimation, Disaster Management
Ø Seismic Alarm and Safe Shutdown
Ø Ambient Vibration Testing (optionally fully wireless)
Ø Induced Vibration Monitoring and Notification
Ø Building Code Compliant Instrumentation
Specifications
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Sensor
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Sensor output:
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±20 V, ±10 V, ±2.5 V - differential
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Digitizer
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Channels:
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3 or 6*
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A/D conversion:
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32 bit Δ−Σ converters individual for each channel
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Overall:
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158 dB per bin @ 1 Hz rel. full scale RMS
150 dB @ 40 sps peak-peak RMS to RMS shorted input noise
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Sampling rate:
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configurable up to 6 channels @ 5000 sps;
supports 2 different simultaneous sample rates;
each channel can have different sampling rates
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Timing
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Internal clock:
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Intelligent Adaptive Real Time Clock (IARTC)
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Sources:
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Network Time Protocol (NTP),
GNSS (GPS, GLONASS, BeiDou and Galileo) with external antenna
up to 5 m cable, or with external module up to 100 m cable*,
wired interconnection (ICC)*
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Free running drift:
Without any source
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±0.5 ppm @ constant +25 °C
±2.5 ppm @ -10 to +50 °C
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After learn (source disconnect):
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< ±0.2 ppm @ -20 to +50 °C
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For more information, please contact Earth Products China Limited .
Service hotline: 400-700-9998
Email: marketing@epc.com.hk
Official website: en.epccn.com
