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

Fluid Resistivity & Temperature Probe HRT-381

The probe is designed for measurement of electric conductivity of rocks in boreholes. High stability and exceptionally wide dynamic range are giving you a possibility to carry out precise measurements of conductivity of sand-clay layers and also mineralized water-soaked sands. Thanks to the induction method applied the probes can be used in water filled, dry and plastic cased boreholes. The response of the probe is practically instantaneous (<0.5s).

Fluid Resistivity & Temperature Probe HRT-381

Probe Parameters

Diameter 38 mm
Lengt 100 cm
Weigh 3.0 kg
Max. Working Temperature/Pressure 75°C/15 MPa
Min. No. of Cable Conductors 2
Supply Voltage Range 30 – 45 VDC
Max./Nominal Current Consumption 100/50 mADC
Supply Voltage Polarity + on central cond.
  − on probe casing

Resistivity Meter Parameters

Resistivity Range 0 – 200 Ωm
Precision ±3%
Exciting Current (square Wave) Frequency 300 Hz
Communication (positive pulse) 0 – 20 000 cps

Thermometer Parameters

Temperature range 0 – 70°C
Precision ±0,2°C
Sensitivity 0,003°C
Time Constant 1 sec
Communication (negative pulse) 0 – 40 000 cps

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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