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  • Sturdy aluminum design rugged, weatherproof, with short metal-free zone
  • Highest search performance and noise immunity 4-quadrant technology, Power Drive option
  • Perfectly suited to the monitoring of entire timber logs
  • Low maintenance
  • Automatic calibration and automatic balance control
  • Easy installation and intuitive operation


  • Standard tunnel diameter up to 5 ft (other sizes on request)
  • Simple setup: TeachAssistant
  • Simple operation: Intuitive and multilingual menus
  • Password protection including user permission management
  • Documentation of all settings, metal alerts, etc.
  • Remote control and remote maintenance via the company network using SHARKNET® software (option)
  • Extended temperature range down to -40°C / -40°F with specially adapted sensor and specially equipped control unit (option)


The METAL SHARK® BIG RD is specifically designed for use in the timber industry and in sawmills. Due to its cylindrical tunnel, it is ideally suited for the inspection of timber for metal objects such as shrapnel, bullets, fragments, nails, screws, bolts, etc.

It identifies magnetic as well as non-magnetic metal contaminants (iron, tombac, brass, stainless steel, etc.) accurately and reliably even in challenging conditions.

Delivery Scope

  • BIG RD detection unit (sensor)
  • Control unit in electric control cabinet with current METAL SHARK® electronics


  • Protection of processing machines from metal objects such as nails or screws
  • Monitoring of large products – especially suitable for tree trunks
  • Monitoring of bulk materials like wood chips
  • For use preferably with troughed conveyor belts


Electronics Digital signal processor, digital frequency generation, digital balance control, automatic calibration, digital noise filters, integrated flexible control functions
Input 2 analog 0 ...10 V DC (option: 4-20 mA)
8 freely configurable 24 V DC signals, e.g. for rotary encoders, product identification, buttons
Output 2 floating: "error" and "metal”
8 freely configurable 24 V DC signals, e.g. solenoid valve, visual/acoustic alarm
Inspection Method High-frequency magnetic field, multi-channel operation, balanced receiver coils
Metal Detection Ferrous, non-ferrous (e.g. tombac, brass, bronze, aluminium, lead, etc.) and stainless steel
Product Compensation 250 memory locations, TeachAssistant
Protection Type IP 65
Ambience -30°C to +40°C / -22°F to 104°F
UL version: -20°C to +40°C / -4°F to 104°F
Optional: -40°C / -40°F or +55°C / 122°F
Rel. humidity 20% to 90%, non-condensing
> 95% relative humidity (condensing) with control unit closed
Product Temperature Up to 70°C / 158°F
Power Supply Single-phase 110-230 V AC +/- 5%, 20 W typical (60 W max.)
Interface RS232, LAN (optional, for SHARKNET®), USB (optional)
Maintenance Very low maintenance, self-calibrating sensors
Diagnostics Integrated diagnostic software, automatic self-test
Conformity CE

Accessories & Extras

  • Separate mounting of the control unit (wall mounting, up to 30 m connection cable to the sensor)
  • Xenon flashing lights
  • Acoustic signaling devices
  • SHARKNET® for remote control, remote maintenance and data recording
  • Power Drive signal amplification for further improved search performance and for particularly challenging operating condition
  • Extended temperature range to -40°C / -40°F
SHARKNET® The SHARKNET® software connects METAL SHARK® metal detectors to a central computer, providing central storage of all operating data as well as batch and alert documentation and remote control and remote maintenance via a PC
Fast Power Drive (FPD) Significantly improves metal detection capability and reliability in industrial environments that do not meet electromagnetic compatibility standards.
Various IP protection classes available, ATEX Zone 22 possible.
Temperature extension (cold) Temperature range extended to -40°C / -40°F
Resin seals remain elastic at very low temperatures. Special insulation, heated enclosure and other features
Temperature extension (hot) Temperature range extended to +55°C / +131°F
Adapted enclosure, additional thermal insulation, heat exchanger and/or active cooling units
Flashing light, XENON Very bright and eye-catching alarm light, 24 V DC, IP 65, RB 10-100 V, 2 W, suitable for mounting on stand or wall mounting
Alarm horn Emits a very loud alarm sound, 24 V DC
Suitable for mounting on stand or wall mounting
Flashing light + horn on stand Acoustic and visual alarm on stand, stainless steel,
with bright red Xenon flashing light and horn for conveyor mounting