Atom - Wireless Seismograph
from Geometrics

The Atom is the latest generation seismograph by Geometrics Inc. A completely wireless system each Atom consists of a state-of-the-art 24-bit A/D conversion, GPS-controlled timing, internal power supply and 4GB of internal data storage. In order to improve functionally and keep the form factor small, lightweight, and covenant to transport the system is equipped with WiFi for data download and NFC for convenient field setup. Capable of supporting single channel or 3 component geophones the Atom can adapt to the requirements of the operator.

Atom Seismograph installed on station with 2Hz vertical Geophone.
Atom Seismograph installed on station with 2Hz vertical Geophone.

The Atom’s primarily application is low frequency passive wave data acquisition. Typically 11 to 100 of units are deployed over a large area and record independently for multiple days. As each Atom is a complete recording device the operator is not constrained by cables or a laptop/data logger, and can deploy non-uniform arrays.

After data download SeisImager automatically shorts records base of the GPS time stamp, applies the array geometry, produces the phase velocity plots and coherence curves.

Features:

  • Internal Power: No big batteries to lug around
  • Low energy consumption - Operates up to 70 hours in the field between charges!
  • Simple acquisition - No laptop required
  • GPS time synchronization – Cable free!
  • Wireless downloading – Cable free!
  • Passive data acquisition – No hammers or weight drops
  • Unmatched Specifications – 24 bit, ultra-high resolution 1.5 to 1,650 kHz bandwidth, low distortion (<0.001% at 25Hz, 2ms)

Product Dimensions

Physical Dimensions (L x W x H) Weight
Atom - Wireless Seismograph (instrument only) 142mm x 140mm x 102mm 1.6kg

Technical Specifications

Channels: 1 or 3
A/D Resolution: 24 bits
Preamp Gain (PG): 0, 12, 24, or 36db
Sample Intervals: 0.25, .5, 1, 2, 4, and 10 ms
Bandwidth: 0.2 - 1650 Hz
Dynamic Range: 128db @ 2ms PG=12db, 124db @ 2ms PG=24db (typ)
Distortion (THD): Less than 0.001% at 25Hz, 2ms (typ)
CMR: Greater than 90db @ 60Hz
Max Input Signal: 1.6 Vrms @ 12db, 100 mVrms @ 36db
Input Noise: 0.12 mVrms @ 2 ms PG=36db, 0.70 mVrms @ 2 ms PG=12db (typ).
Input Resistance: 20 kOhm
Internal Storage: 4 Gb standard; expandable to 32 Gb
Data Upload: Standard 802.11g WiFi. Each Atom appears as a DHCP client
Geophone Test: Tap the geophone and LEDs respond with a distinctive pattern.
Power: Powered by internal 10AH NiMh batteries and/or an external 6VDC battery.
Charging: Charging voltage is 5 volts at 1.5 Amps. Nine hours for full charge when charging through the 10-pin charge connector. 14 hours to charge using a wireless adaptor.
Environmental: IP68, dustproof and waterproof to 1m
Operating Temp: -20°C to +55°C (-4ºF to +131ºF)

Shipping

Contents Dimensions (L x W x H) Weight
Case 1
12 channel Atom system for passive recording
71cm x 50cm x 40cm 35kg