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

Three-Arm Caliper HC-380

Three-Arm Caliper is one of the basic probes used for finding up technical state of boreholes.

It is mainly used for:

Three-Arm Caliper HC-380

Probe Parameters

Diameter 38 mm
Length 110 cm
Weigh 6.0 kg
Max. Working Temperature/Pressure 75°C/10 MPa
Min. No. of Cable Conductors 2
Supply Voltage Range 30 – 45 VDC
Max./Nominal Current Consumption 100/60 mADC
Supply Voltage Polarity + on central cond.
  − on probe casing

Measuring Parameters

Measuring Range 38 to 300 mm (with short arms)
  100 to 700 mm (with long arms)
Sensitivity ±0,2 resp. 0,5 mm
Communication (negative pulse) 0 – 10 000 cps

Special orders

Calipers of different diameters and different arm lenghts can also be manufactured upon special order. Their measuring parameters are similar to those stated above.

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