Marine Magnetics SeaSPY Magnetometer – Available for rental, hire and ex-rental purchase from Ashtead Technology.
The SeaSPY magnetometer product eliminates many of the inherent problems associated with other marine magnetomers such as orientation restrictions, sensor realignment, time and temperture drift and poor absolute accuracy. Marine Magnetic's SeaSPY magnetometer measures the ambient magnetic field using a specialized branch of nuclear Magnetic Resonance technology, applied specifically to hydrogen nuclei. The SeaSPY sensor is unique in that it is entirely omnidirectional. The amount of signal produced by the sensor is completely independent of magnetic field direction. You never have to orient your sensor, because it is already optimized to work around the World.
The SeaSPY Towfish includes high sensitivity omnidirectional Overhauser sensor, electronics module containing all of the driving electronics, leak detector, 4 lead weights and SeaLINK data acquisition and GPS logging software for Windows. Also included tow cable, communication transceiver, power supply, altimeter and pressure sensor.
|Timebase stability||1ppm, -45°C to +60°C|
|Range||18,000nT to 120,000nT|
|Gradient Tolerance||Over 10,000 nT/m|
|Sampling Range||4Hz - 0.1Hz|
|Power Supply||15VDC-35VDC or 100-240VAC|
|Operating Temperature||-45°C to +60°C|
|Temperature Sensor||-45°C to +60°C, 0.1 step|
|Towfish Weight in Air||124 L x 12.7 D cm||49 L x 5 D in.||16 kg||35 lbs|
|Towfish Weight in Water||2 kg||4.4 lbs|
|Tow Cable Weight in Air||1(outer) x 16.5 (bending) cm||0.4 (outer) x 6.5 (bending) in.||125 g/m||84 lb / 1000 ft|
|Floatation Cable Weight in Air||272 g/m||183 lbs/1000 ft|
|Floatation Cable Weight in Water||-20 g/m||-13.5 lbs/1000 ft|