LEMI-304

Product type:
3-component autonomous vector magnetometer for seafloor application
Product description:
LEMI -304 seafloor vector magnetometer is produced on the base of the fluxgate sensor, all three components of which are assembled in one body. Minimal magnetism of components enables the instrument to be implemented as a monoblock construction where the electronic unit is placed close to the sensor. An automatic compensator provides convenient compensation of the initial magnetic field offset and reading of the full value of the measured field. There is GPS timing and coordinates determination. In the absence of a GPS signal, the timing by the internal clock provides high accuracy synchronization of data. The internal flash memory can provide long-term autonomous data storage. The instrument also has two-axes tilt angles measurement. Using the developed software allows reducing the magnetometer data collected in a randomly oriented coordinate system to the data in the geomagnetic coordinates.

Highlights:
High resolution
Low noise
Low temperature offset
Tilt angles measurement
Full automatic compensation
Bluetooth interface
Timing by internal clock
Internal flash memory
GPS timing
The specifications can be changed at customer’s request.

Product image:

Specifications:

• Full measuring range:±65000 nT
• Resolution: 0.01 nT
• Band pass: DC-0.5 Hz
• Noise level in the frequency band 0.03 – 0.3 Hz, rms: <15 pT
• Sample rate: 1 s
• Digital output: USB(Bluetooth)
• Sensor orthogonality error: < 30 min of arc
• (< 2 min after calibration)
• Temperature drift: <0.2 nT/°C
• Maximal operation depth: depends on housing type
• Operating temperature range: 0 …+50 °C
• Power consumption: <0.8 W
• Autonomy, max: 16 days
• Tiltmeter characteristic
• Resolution: 0.01 degree
• Dynamic range: ±30 degree

Additional Information: