Magnetic Susceptibility Probes HM-453, HM-383, HM-320
This family of probes is designed for measurement of magnetic susceptibility of rocks down the borehole profile. The probes are used for measurement in complex of sedimentary rocks, igneous or metamorphic rocks up to low magnetite rocks. The susceptibility is an excellent indicator of lithology.
The probes response is practically instantaneous (<0.5s).
Probe Parameters
Diameter |
45, 38 adn 32 mm |
Length |
max. 110 cm |
Weight |
3.0 kg |
Max. Working Temperature/Pressure |
75°C/20 MPa |
Min. No. of Cable Conductors |
2 |
Supply Voltage Range |
30 – 45 VDC |
Max./Nominal Current Consumption |
100/40 mADC |
Supply Voltage Polarity |
+ on central cond. |
|
− on probe casing |
Measuring Parameters
Sensor |
two coil system |
Intercoil Spacing |
25 cm |
Operating Frequency |
≈2 kHz |
Communication (negative pulse) |
0 – 20 000 cps |
Measuring range |
10−5 – 0.5 SI units |
Accuracy |
< 3% F.S. |
Zero Drift |
< 2.10−5 SI units/10°C |