Lviv Centre of Institute of Space Research

Home Up Feedback Contents Search

 

horizontal rule

FIELD TELLURIC STATION LEMI-419E

Main features:

bullet8 telluric field channels
bulletFrequency range (DC…100) Hz
bulletSatellite synchronization
bulletLow noise level
bulletSpecial software for real-time data acquisition and visualization
bulletDigital interface

 

Main applications area:

bulletExploration of different mineral deposits

Composition (left to right):

bullet

Electronic unit

bullet

Cable Plug 97-3106A-24-28S

bullet

USB to RS-422 converter MOXA

bullet

GPS antenna

bullet

Power supply cable 1.8m

bullet

Interface cable 6m

 

FIELD TELLURIC STATION LEMI-419E


Telluric station for electric measurements LEMI-419E (further – TSE) is intended for the study of electric field fluctuations in the frequency band DC – 100 Hz in field or laboratory conditions. The TSE is providing the measurements and recording in automatic mode of natural and controlled source electric field variations and also visualization at external PC display of 8 electric channels (E1 – E8). A filter-free technology is used in input stages (it means “without high-pass filters”) to allow registration of super-long period signals. Automatic compensation circuits independent for every electric channel are implemented in the TSE to avoid the channels saturation in case of too high DC input voltage.
 

MAIN TECHNICAL PARAMETERS

Number of electric channels 8
Frequency band DC...100 Hz
Measured ranges of electric signal (for each component) 10, 1, 0.1V
Automated offset compensation range 5000 mV
Resolution of electric meter 0.1 μV
Noise of electric meter at the frequency 1 Hz <0.3 μV rms
Electric meter input impedance >100 MOhm
Sample rate 500 per s
ADC resolution 24 bits
Digital output interface (UART 921.6kb/sec) RS-422
GPS timing, geographical coordinates and altitude determination
GPS timing error <10 μsec
Operating temperature range Minus 20 to +50°C
DC power supply voltage (12V) 9…18 V
Power consumption <5 W
Weight of LEMI-419E electronic unit 2.5 kg

View PDF

horizontal rule


Last modified: 15-04-2016

Copyright © ISR '2001-2016 TOP HOME