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Home Sensors Satellite synchronized ULF induction magnetometer set on base LEMI-30

Satellite synchronized ULF induction magnetometer set on base LEMI-30

Description

The complete set of magnetometer consists of three LEMI-30 sensors and one communication unit (CAM unit), which connects the sensors to PC and provides their power supply, satellite synchronization of data sampling and digitizing.

The induction magnetometer LEMI-30 is intended for the study of magnetic field fluctuations in the frequency band 0.001 ... 30 Hz in land conditions and is ideal for ultra-low frequency (ULF) earthquake precursors monitoring. It can be used both as a part of the computer measuring and registration equipment and autonomously with any analogue recorder. All three LEMI-30 sensors are similar within 0,1 dB.


LEMI-030 magnetometer

Technical specification

  • Frequency band of received signals .....................................................  0.001 ... 30 Hz
  • Transformation coefficient value on 2 symmetrical output:
    • on the flat part, on the linear part .................................................... 20 mV/nT; 200 mV/nT
    • where f is the frequency of received signal ....................................... 20*f mV/nT; 200*f  mV/nT
  • Transformation coefficient error ............................................................. ≤ 3 dB
  • Noise rejection on (50 ± 0.2) or (60 ± 0.2) Hz ......................................... > 60 dB
  • ADC (CAM unit) resolution ................................................................... 24 bit
  • GPS sampling synchronization and coordinates determination
    • Power supply voltage ..................................................................... ± (6 ... 12) V
    • Total power consumption ............................................................... < 3 W
    • Temperature range of operation ....................................................... minus 10 + 50oC
    • Outer dimensions .......................................................................... L = 870 mm; d = 85 mm
    • Weight of one sensor ..................................................................... 5.6 kg
    • Waterproof housing: Maximum length of connecting cable ................ 200 m


Areas of Application

Intended for the study of magnetic field fluctuations in the frequency band 0.001 ... 30 Hz in land conditions. Its major advantage is super-deep mains interference rejection which allows its using con-veniently close to populated area. The set of three magnetometers LEMI-30 with one communication unit, which connects the sensors to PC and provides their power supply, digitizing and satellite synchronization of data sampling, is ideal for earthquake precursors monitoring. All three LEMI 30 sensors are similar within 0,1 dB. Used in space on satellites.

Stage of Development

Magnetometer is already for the market

Contact Details

Valery Korepanov
Organization: Lviv Center of Institute of Space Research NASU-NSAU
Address: 5A, Naukova str. Lviv-060, 79000, Ukraine
(38-0322) 639163
This e-mail address is being protected from spambots. You need JavaScript enabled to view it

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