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3 Component Magnetometer (DEMAGS)
 Download .PDF Brochure
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Parameters Logged:
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Fluxgate Magnetometer
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HX, HY & HZ
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Alignment +/- 0.025
Bias 10 gamma
Scale Factor 0.1% full scale
Total Field +/- 100 gamma
Field Dip +/- 0.1 deg
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Servo Accelerometers
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GX, GY & GZ
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Alignment +/- 0.2 deg
Bias 0.003g
Scale Factor 4.5V/g +/- 0.2% @ 25°C
Linearity +/- 0.1% of full scale
Total G +/- 1mgee
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Temperature
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Sensor Module Temperature
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Max Temperature = 125°C
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APPLICATION:
DEMAGS - 3CM is used to measure down-hole magnetic fields whilst approaching and moving away from off hole magnetic anomalies. Especially useful when targeting non outcropping magnetic anomalies during subsequent drilling programs. Also provides formation characterization in the form of a standard log report.
The following properties can be determined for an off hole anomalous magnetic body;
ADVANTAGES:
DEMAGS-3CM allows accurate placement of subsequent drill holes even if the first drill holes have not intersected projected targets. Provides both geological correlation and a directional survey in one run. High resolution and accurate calibration provides good data confidence.
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Specifications:
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Tool Diameter
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45 mm (1.75 in)
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Tool Length
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2,440 mm (8.0 ft)
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Max. Pressure
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1,380 bar (20,000 psi)
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Max. Temp
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125 °C (257 °F)
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Reports:
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LEVEL 1
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LEVEL 2
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LEVEL 3
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Shot number
D - depth
Hx, Hy, Hz Mag output
Gx, Gy, Gz Acc output
Temperature
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D- depth
I - Inclination of drill hole
B’ - Apparent direction of drill hole
Ht - Magnetic field total
I - Magnetic field dip angle
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D - Depth
Bx - Anomaly induced mag vector North
Bz - Anomaly induced mag vector Vertical
# - Anomaly induced mag field dip angle
^R - Anomaly induced mag field strength
To - Background mag field
Io - Background mag dip
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