J.W. Fisher's Remote metal Detector RMD-1
The RMD-1 is a high performance Pulse induction metal detector which can be attached to almost any ROV or towed underwater system as shown in the photo. Pulse induction technology allows the RMD-1 to detect both ferrous and non-ferrous metal objects on or beneath the ocean floor while ignoring minerals in the seabed. The remote metal detector locates and tracks underwater pipelines, finds missing tools and dredge parts, locates weapons and unexploded ordnance, and finds lost treasure
The system employs two coils molded into rugged ABS shells firmly attached to the underwater vehicle with a corrosion-proof tubular PVC frame. The frame provides a sturdy mount for the coils and positions them out in front of the ROVso as not to be affected by the ROV's metal parts. The oval coils produce a detection envelope which extends 3' to 5' (0.91 meters to 1.5 meters) into the bottom. The actual detection area is 62" Deep x 52" Wide (1.57 meters X 1.32 meters). The sleek, low profile coil design minimizes drag and weight on the ROV
When the coil senses metal it sends a signal to the RMD-1 "downstairs electronics unit" attached to the underwater vehicle. The downstairs electronic unit processes the information and can produce RS232 output, 0-5 volts DC output, or a proprietary signal used by the JWF topside control/readout unit. The output from the downstairs electronics unit can be transmitted through the ROV's umbilical or a separate cable. The ROV can power the downstairs electronics unit or power can be supplied from the surface through the umbilicalcable.
The standard RMD-1 has a topside control box which displays the readout with both meter and audio alarm, the closer the proximity of the metal target, the stronger the reading. The topside unit can use the underwater vehicle's umbilical cable to supply voltage to the downstairs electronics unit and to receive the output signal from the downstairs unit. The RMD-1 can be powered from 120 Volt AC (standard), 220 Volt AC, or 9-36 Volts DC. The RMD-1 is easy tooperate and readily attaches to most any underwater vehicle. The RMD-1 is covered by a full TWO YEAR WARRANTY.