A unique data acquisition system for electrical resistance tomography

Conference · Thu Jan 04 00:00:00 EST 1996

OSTI ID:238480

Daily, W; Ramirez, A ^[1]; Zonge, K ^[2]

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1. Lawrence Livermore National Lab., CA (United States)
2. Zonge Engineering, Tucson, AZ (United States)

Unique capabilities are needed in instrumentation used for acquiring data to do electrical resistance tomography (ERT). A data acquisition system is described which has a good combination of the required capabilities and yet is field rugged and user friendly. The system is a multichannel detector for high data rates, can operate over a wide range of load conditions, will measure both in phase and quadrature resistance at frequencies between 0.0007 Hz and 8 kHz. The system has been used in both the field and laboratory to collect data with a typical accuracy between 1 and 10%.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 238480
• Report Number(s): UCRL-JC-122798; CONF-960477-6; ON: DE96010240; TRN: AHC29612%%29
• Resource Relation: Conference: 9. annual symposium on the application of geophysics to engineering and environmental problems, Denver, CO (United States), 15 Apr - 1 May 1996; Other Information: PBD: 4 Jan 1996
• Country of Publication: United States
• Language: English

Related Subjects

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
58 GEOSCIENCES
TOMOGRAPHY
DATA ACQUISITION SYSTEMS
RESISTIVITY SURVEYS
RESERVOIR ROCK
ELECTRIC CONDUCTIVITY
DESIGN
DATA TRANSMISSION
MULTIPLEXERS
COMPUTERS
PERFORMANCE
ERRORS