The SubSurface MUL Gradiometer Magnetic Underwater Locator w/ Sensor uses advanced detection technology to locate underwater ferrous metals immersed from 10 feet up to 1000 feet. Its sensitivity, accuracy, and durability make it a great choice for exploration programs, excavation, map alterations, and geological mapping. This package includes the main control electronic box and the 2-core sensor system housed inside a titanium tube for boat towing or diving.
How it works: The Magnetic Underwater Locator (MUL) is a magnetic gradiometer that locates objects by detecting differences in magnetic field strengths using the two sensors inside the sensor tube housing. This difference is measured in “Differential Milligauss”. You will be notified of the signal reading using a bar graph on the LCD screen and audio signals (via speaker or headset). The bar graph fills to the left (negative) or right side (positive) depending on the signal polarity. Also, the audio pitch increases as the signal strength increases.
Control box: Aside from the LCD screen, the electronic control box has a control panel with buttons for powering the device on/off, adjusting the volume and gain, and more. It also has an RS-232 port to enable control using a computer, a sensor port for connecting the control box to the MUL sensor, and a power port for running the device on external power. The rechargeable battery is built into the control box.
Sensor: The MUL sensor is longer (1.625” D x 34.875” L) than the BHG Locator Sensor to allow convenient handling during diving or boat towing.