Density Gamma Probe HDG-453
The probe provides relative measurement of the bulk density of formations surrounding the barehole with very good bed boundary resolution.
The probe contains a gamma source and a high sensitivity gamma scintillation detector that is shilded against direct radiatio from source. Therefore only the radiation backscattered from the formation reaches the detector.
The relative count-rates provide a measure of formation bulk density.
Probe Parameters
| Diameter | 45 mm |
| Lenght | 130 cm |
| Weight | 7.7 kg |
| Detector type | NaI(Tl) |
| Detector size | Ø16 × 10 mm |
| Measuring range | 1 – 4 g/ccm |
| Max. Working Temperature/Presure | 70°C/15 MPa |
| Min. No. of Cable Conductors | 2 |
| Supply Voltage Range | 30 – 45 VDC |
| Max./Nominal Curent Consumption | 100/70 mADC |
| Supply Voltage Polarity | + on central cond. |
| − on probe casing | |
| Either Co 60 or Cs 137 can be used as source. | |
Special orders
Probe of 38 mm diameter can also be manufactured uponspecial request. Its measuring parameters are similar to those stated above.