Dual Induction Conductivity Probe HII-383
The probe HII-383 is designed for measurement of electrical conductivity of rocks in boreholes. High stability and exceptionally wide dynamic range are giving you possibility to carry on 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 is practically instantaneous (<0.5s).
Probe Parameters
| Diameter | 38 mm |
| Length | 120 cm |
| Weigh | 6.0 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 | 150/100 mADC |
| Supply Voltage Polarity | + on central cond. |
| − on probe casing |
Measuring Parameters
| Sensor | three coil system |
| Intercoil Spacing | 40 cm and 60 cm |
| Operating Frequency | ≈100 kHz |
| Communication (negative pulse) | 0 – 20 000 cps |
| Conductivity range | 1 mS/m – 3 000 mS/m |
| Accuracy | < 3% F.S |
| Stability of Zero | < 0.5 mS/m/10°C |
Special orders
Probes of diameters 32 and 45 mm can also be manufactured upon special order. Their measuring parameters are similar to those stated above.