Table T3. Measurement performance specifications of the arcVISION, Expedition 343.
|
Measurement
|
Transmitter-receiver spacing (inch) | Transmitter-receiver spacing (inch) |
Accuracy (%, mS/m)
|
Range (Ωm)
|
||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
16
|
22
|
28
|
34
|
40
|
16
|
22
|
28
|
34
|
40
|
|||
| R = 1.0 Ωm | Depth of investigation (radius, inch) | Vertical resolution (ft) | ||||||||||
| Phase shift resistivity at 2 MHz | 13 | 14 | 15 | 17 | 18 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | ±2, ±0.3 | 0.2–60/60–3000 |
| Phase shift resistivity at 400 kHz | 17 | 19 | 22 | 25 | 27 | 1 | 1 | 1 | 1 | 1 | ±2, ±2.0 | 0.1–10/10–100 |
| Attenuation resistivity at 2 MHz | 19 | 22 | 24 | 26 | 29 | 1.8 | 1.8 | 1.8 | 1.8 | 1.8 | ±3, ±1.5 | 0.2–25/25–50 |
| Attenuation resistivity at 400 kHz | 27 | 30 | 33 | 36 | 38 | 3 | 3.5 | 4 | 4 | 4 | ±3, ±10 | 0.1– 3/3–10 |
| R = 10.0 Ωm | Depth of investigation (radius, inch) | Vertical resolution (ft) | ||||||||||
| Phase shift resistivity at 2 MHz | 18 | 22 | 25 | 28 | 30 | 1 | 1 | 1 | 1 | 1 | ||
| Attenuation shift resistivity at 2 MHz | 31 | 34 | 36 | 38 | 40 | 4 | 5 | 6 | 6 | 6 | ||
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