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3-COMPONENTS AUTONOMOUS VECTOR
MAGNETOMETER LEMI-301 FOR SEAFLOOR APPLICATION
LEMI -301 vector magnetometer is produced on the base of
fluxgate sensor, all three components of which are implemented into one body.
Non-magnetic housing and minimal magnetism of components enable the instrument to be
implemented as a monoblock construction where the electronic unit is placed close to the
sensor. Automatic compensator provides convenient compensation of the initial field offset
and reading of full value (6 digits) of the measured field. Timing by internal clock
provides high accuracy synchronisation of data. The internal flash memory can provide
long-term autonomous data storage. The system also has two-axes tilt measurement. Using
the developed software it allows to reduce the magnetometer data collected in randomly
oriented coordinate system to the data in the frame system connected with geomagnetic
coordinates. |
Technical Specifications
Resolution |
0.1 nT |
Full measuring range |
± 65000 nT |
Bandpass |
DC-0.3 Hz |
Noise level in the frequency band 0.1 -
1 Hz, rms |
<20 pT |
Sample interval of data storage |
1,5,10,60 s |
Sensor orthogonality error |
<30 min of arc |
Temperature drift |
<0.2 nT/° C |
Maximal operation depth |
200 m |
Operating temperature range |
0
40 ° C |
Power consumption |
less 1.5 VA |
Weight:
waterproof housing
electronic unit with sensor |
10 kg
1 kg |
Tiltmeter characteristic:
Resolution
Dynamic range |
0.3 grad
± 30 grad |
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