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FLUXGATE THEODOLITE DI - 041RFLUXGATE THEODOLITE DI 041R is a �luxgate magnetometer mounted on a non-magnetic theodolite and a geomagnetic acquisition system to perform absolute measurements of declination and inclination. It is used to calibrate compasses or to periodically calibrate continuously recording magnetic variometers in magnetic observatories.
The angle at which its electronic �luxgate magnetometer reads a minimum value, is compared to a sighting through its optical theodolite. True north is determined by sighting a true north reference target mounted some distance away, or is derived from celestial navigation calculations on a sighting of the sun or another star.
FLUXGATE THEODOLITE DI 041R unit consists of a non-magnetic theodolite, a linear magnetic �luxgate core from DTU Space, and an embedded data acquisition based on a L inux system. Magnet ic adjustments and calibrations are performed at the Tihany Geophysical Observatory and an independent geodetic laboratory.
SpecicationMAGNETOMETER
Type Fluxgate
Number of axis One
Measuring range ± 199.9 nT
Resolution 0.1 nT
Power supply 12 vdc
Power consumption 2 watt
Operating temperature -10 to 40 °C
Length of cable 5 meters
THEODOLITE
Material Non-magnetic
Measuring accuracy <3"
Magnication 30x
Free objective diameter 40 millimeter
Field of vision at 1 km 23 meter
Shortest sighting distance 1.5 meter
Angle of eld of view 1 3
Operating temperature -10 C to +50 °C
Tripod dimensions / weight 16x100x160 cm / 5.6 kg
GEOMAGNETIC ACQUISITION SYSTEM
Central processing unit ARM Cortex-A53, 1.2GHz
Memory 1 Gb
Networking 10/100 Ethernet, 2.4GHz 802.11n wireless
Storage Up to 64Gb microSD
Interface HDMI, 4× USB 2.0, 1x RS232/RS484
Display Touch screen, 800x480 pixels
Power supply 5 Vdc / 3 A
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