LEMI LLC.

LEMI Sensors

Magnetic and Magnetotelluric StationsProductsTechnical

LEMI-030

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Product type:
Induction magnetometers

Product description:
The complete set of magnetometers consists of three LEMI-30 sensors and one communication unit (CAM unit), which connects the sensors to the PC and provides their power supply.

Application description:
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 ULF earthquake precursors monitoring. It can be used both as a part of the computer measuring and registration equipment and autonomously with any analog recorder. All three LEMI 30 sensors are similar within 0,1 dB.

Highlights:
Satellite synchronization of data sampling and digitizing.

Product image:

 

Specifications:

  • Frequency band of received signals 0.001 … 30 Hz
  • Transformation coefficient value on 2 symmetrical output:on the flat part
  • Transformation coefficient value on 2 symmetrical output:on the linear part
  • Transformation coefficient value on 2 symmetrical output:f is the frequency
  • Transformation coefficient error | (< or = 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 | (-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)

Additional Information:

LEMI-030_Datasheet.pdfDownload