Lviv Centre of Institute of Space Research

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Main features:

bulletHigh resolution and precision
bulletLow noise
bulletLow temperature offset
bulletConvenience of installation and service
bulletLow power
bulletOLED display
bullet8 GB SD card
bulletInternal real time clock
bulletSatellite synchronization
bulletRS-232 output
bullet3 years operational guarantee
bulletWaterproof housing

LEMI-046 vector magnetometer is intended for the precise measurement of Earth's magnetic field and its variations at laboratory and land conditions as well as in geomagnetic observatory in Antarctic Region. It means that it is adapted to function in low temperatures. It is produced on the base of flux-gate sensor, all three components of which are implemented in the same body. It consists of two units - sensor unit in waterproof housing and electronic unit mounted in PELI case, both connected by the cable. The electronic unit provides automated operation - acquisition, processing and storage in the embedded SD card of data about magnetic field and its variations and/or their transmission to the external user via RS-232 interface. Built-in GPS receiver assures satellite synchronization of the internal clock and the coordinates of magnetometer location are also registered. It allows organizing the synchronous operation of a set of the magnetometers installed at the studied area. The big enough volume of internal non-volatile memory for data recording and small power consumption allow using this magnetometer for long-term autonomous operation in land conditions.


Measurement range 70000 nT
Magnetic field compensation range 70000 nT
Magnetic field variation range (automatic compensation after switching power on) 2000 nT
Frequency band DC-0.5 Hz
Sample rate 1 per s
Magnetometer noise density at frequency 0.1 Hz < 20 pT
Magnetic sensor components orthogonality error < 30 min of arc
Temperature drift < 0.3 nT/C
Operating temperature range for the electronic unit minus 40 - +50
Operating temperature range for the sensor minus 65 - +50C
Power supply (external battery voltage)
Power consumption
918 V
< 1.2 W
Flux-gate sensor cable length 10 m
         Electronic unit
         Flux-gate sensor
250x200x110 mm
106x106x118 mm
         Electronic unit
         Flux-gate sensor (without a cable)
2.0 kg
1.45 kg

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Last modified: 25-11-2021

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