is designed for estimating compressional wave interval time (∆t – delta t compressional) and attenuation coefficient in coal/ore/hydro-geological/geotechnical boreholes, etc.
Description
Features and Advantages:
- high operational capability in different geotechnical conditions;
- borehole surveying in a wide range of hole diameters;
- probe space buildup.
Specifications
|
Sonde formula |
P30,25P20,25P11,0(2,0)E |
|
Transmitter operational frequency, kHz: 90 mm 60 mm 36 mm |
16-25 25-35 35-45 |
|
Interval time range ∆t, microsecond/m |
120-600 |
|
Relative interval time error ∆t, % |
±3 |
|
Absolute attenuation coefficient error α, dB/m |
±5 |
|
Hole diameter, mm |
76-300 |
|
Max. hydrostatic pressure, MPa |
60 |
|
Max. operating temperature,°С |
100 |
|
Downhole tool dimensions, mm: diameter length |
48 3400 (4400) |
|
Downhole tool weight, kg |
33 (37) |
Certificate