Products

Borehole Logging Systems

Induction Conductivity

H3I-453
H4I-453
HI-381
HI-453, HI-453E
HI-453F
HII-383
HII-453

Magnetic Susceptibility

HM-453, HM-383, HM-320
HM-453E, HM-383E
HM-100
HMM-453
HMG-453

Combined probes

HMI-453, HMI-453E

Other probes

HC-380
HC-380C
HC-453, HC-453a
HC-454
HRT-381
HF-380
HGSPR-380
HF-500
HN-453
HFN-381
HGG-453
HDG-453
HLG-382

Other products

BHC-200
Geo set HDS-600
Portable Winches
Portable Logging System
Cameras

Accessories

AH-30, AH-150

Logging instruments

Magnetic Susceptibility & Induction Conductivity Probes HMI-453, HMI-453E

These probes are designed for measurement of magnetic susceptibility and electric conductivity of rocks along borehole profile. High stability and exceptionally wide dynamic range are giving you a possibility to carry out precise measurements of magnetic susceptibility and conductivity from layers of clay to strongly magnetic and conductive sulphytic and magnetic rocks.
Thanks to the induction method applied the probes can be used in water filled, dry and plastic cased boreholes. The probe response is practically instantaneous (<0.5s).

Magnetic Susceptibility & Induction Conductivity Probes HMI-453, HMI-453E

Probe Parameters

Diameter 45 mm
Length 150 cm
Weigh 7.0 kg
Max. Working Tem./Pressure 75°C/20 MPa
Min. No. of Cable Conductors 2
Supply Voltage Range 30 – 45 VDC
Max./Nom. Current Consumption 100/40 mADC
Supply Voltage Polarity + on central cond.
  − on probe casing

Measuring Parameters

Sensors two coil systems
Crosstalk between meas. channels < 2%
Communication magn. channel (positive pulse) 0 – 50 000 cps
Communication Cond. channel (negative pulse) 0 – 50 000 cps

Magnetic susceptibility channel

Measuring range 10−5 – 0.5 SI units
  10−4 – 2 SI units (HMI-453E)
Intercoil Spacing 25 cm
  30 cm (HMI-453E)
Operating Frequency 2 kHz
Accuracy < 3% F.S.

Conductivity channel

Measuring range 1 mS/m – 3 S/m
  3 S/m – 1 000 S/m (HMI-453E)
Intercoil Spacing 50 cm
  30 cm (HMI-453E)
Operating Frequency ≈100 kHz
  ≈2 kHz (HMI-453E)
Accuracy < 3% F.S.

Special orders

Probes of diameters 32 and 38 mm can also be manufactured upon special order. Their measuring parameters are similar to those stated above.

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