| Brand |
JW Fishers Mfg |
| Product |
Proton 4 magnetometer |
| Year of development |
2005 |
| Type of sensor (caesium, Overhauser, potassium, proton) |
Proton |
| Is the sensor a gradiometer? (Y/N) |
N |
| Absolute accuracy (nT) |
2 |
| Resolution (nT) |
1 |
| Sensitivity (nT) |
1 |
| Sample rate (Hz) |
0.5 |
| External trigger possibility (Y/N) |
N |
| Operating temperature (°C) |
0 to +70 |
| Power requirements |
24VDC |
| Direction of sensitivity |
360° |
| Fish dimensions |
120cm × 10cm diameter |
| Weight in air, water (kg) |
25, 12 |
| Depth range |
150m |
| Towfish mounting (towed, fixed mount, other) |
Towed |
| Power requirements |
24VDC |
| Type |
Polypropylene |
| Maximum length |
300m |
| Breaking strength |
250kg |
| Diameter (mm) |
15 |
| Weight in air, water |
0.3kg/m, 0kg/m |
| Is cable termination field replaceable? (Y/N) |
N |
| Is visual read-out available? (Y/N) |
Y |
| Is visual read-out available? (Y/N) |
N |
| Digital output (Y/N) |
Y |
| Supported digital data formats |
RS232 |
| Data-aquisition/processing package |
Fishers Tracker II software |
| ROV (Y/N) |
N |
| Side-scan sonar (Y/N) |
N |
| Sub-bottom profiler (Y/N) |
N |
| Single-beam echosounder (Y/N) |
N |
| Depth sensor (Y/N) |
Y |
| Heading sensor (Y/N) |
N |
| Typical applications |
Locating sunken vessels, vehicles, pipelines, anchors, shipwrecks, dredge heads, etc. |
