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Marine Magnetics Inc.
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Marine Magnetics - Explorer ...

Marine Magnetics - Explorer Magnetometer for High Sensitivity Surveys

The Explorer magnetometer stands out as a compact and lightweight high sensitivity device designed for comprehensive geomagnetic surveying across the globe. With a weight of just 4.5 kg, it is optimized for single-person operations without sacrificing measurement accuracy. The Explorer delivers absolute precision without facing export restrictions, thanks to its high sensitivity Overhauser sensor technology. This system operates with ultra-low power consumption at 2W, facilitating extensive surveys in any geographical orientation while negating dead zones typically known to hinder conventional magnetometers. Notable for its maintenance-free operation, the Explorer de-emphasizes typical constraints such as heading errors and sensor warm-up time, making it an ideal tool for diverse and advanced applications in marine environments. Compatible with BOB Survey Software, it is designed for straightforward integration with various AUVs, maintaining high standards of reliability and operational efficiency in diverse marine conditions.

One Man Operation

4.5 kgs (9.9 lbs) for the mag
6.9 kgs (15 lbs) for a 50m (164 ft) tow cable

High Sensitivity Without Export Restrictions

With 0.02 nT sensor sensitivity and 0.001 nT counter sensitivity Explorer maintains high sensitivity, without requiring an export permit.

Unmatched Absolute Accuracy

Explorer gives you consistent, repeatable data you can trust. At 0.1 nT it is orders of magnitude more accurate than all competing magnetometers.

2W Ultra Low Power Consumption

Explorer can be powered by a single car battery for up to 200 hours.

Survey in Any Direction, Anywhere in the World

There are no limitations with our omnidirectional Overhauser sensors –they don’t have a dead zone*. That’s why Explorer has a sleek design. You never have to rotate the sensor to try to minimize the dead zone, as you would with competing mags.

*A dead zone is an area where the mag can’t take any readings.

No Heading Error

No matter how our sensors are oriented, successive survey lines match up perfectly. You’ll produce better quality magnetic maps and won’t lose what you’re looking for in mismatched survey lines. Heading error is an offset in the mag data caused by changing direction with each survey line.

No Sensor Warm Up Time

Explorer works instantly on power up, regardless of the water temperature.

Maintenance-Free Overhauser Sensors

Our sensors are omnidirectional, maintenance free, and do not require realignment, or recalibration. Plus they don’t contain any consumable parts, or toxic chemicals.

Get BOB Survey Software

Easily plan, configure, execute, and analyze your survey – free and native for all our magnetometers.

Explorer Includes
Overhauser sensor
Electronics module with Larmour counter
Leak detector
Depth rating 1000m (1420 psi)
Additional Components
Power isolator
24V universal AC power supply or battery clip cable
USB or RS-232 cable
BOB data acquisition and visualization software
Tow cable, length to be determined by customer
A custom shipping case

Performance

Operating Zones : Worldwide. Explorer collects accurate results regardless of how it’s pointed in relation to Earth’s magnetic field.
Absolute Accuracy : 0.1 nT
Sensor Sensitivity : 0.02 nT
Counter Sensitivity : 0.001 nT
Resolution : 0.001 nT
Dead Zone : NONE
Temperature Drift : NONE
Power Consumption : 2 W
Range : 18,000 nT to 120,000 nT
Gradient Tolerance : Over 10,000 nT/m
Sampling Range : 4 Hz – 0.1 Hz
Communications : RS-232, 9600 bps
Power Supply : 9-30 VDC or 100-240 VAC

Magnetometer

Length : 86 cm (33.75 in)
Diameter : 7.6 cm (3 in)
Weight in Air : 3.8 kg (8.5 lbs)
Weight in Water : 1.2 kg (2.6 lbs)

Tow Cable

Conductors : Four + Shield
Breaking Strength : 2,500 kg (5,500 lbs)
Outer Diameter : 1 cm (0.4 in)
Weight in Air : 122 g/m (8 lb/100 ft)
Weight in Water : 24 g/m (2 lb/100 ft)