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  • Reliably detects metals in free-falling goods
  • Simple assembly due to mounting frame and quick release rings
  • Highest sensitivity with 4-quadrant technology
    Autocalibration and TeachAssistant for intuitive control and easy installation
  • Maintenance-free through automatic balance and calibration control
  • ATEX-version for use in explosion endangered environments
  • BRC-Kit option: Conformity with the Global Standard of the British Retail Consortium (BRC) for food safety

Download data sheet METAL SHARK® GF


  • Maximum inspection performance with highest reliability in the entire detection area due to 4-quadrant technology
  • Documentation of all events and metal messages
  • Simple setup with TeachAssistant, pre-set product types like salty, sweet, wet, dry etc.
  • IFS and HACCP reports available on the display at the simple push of a button
  • Memory for up to 250 products
  • Optional: Data transfer to USB interface or connection to the company network via SHARKNET® software
  • Easy to use with intuitive and multilingual menus
  • Cyclical function monitoring with Performance Validation System (PVS)
  • 4-level password system, automatic log out after time lapse


The METAL SHARK® GF (Gravity Feed) is used for pipelines with free-falling products to detect metal contamination in continuously flowing granulates or powders such as sugar, flour, grain or even plastic granules.

The sensitive sensors detect the smallest metal contaminants, and fast-switching separation flaps discharge them directly from the product stream during ongoing production.


  • Digital signal processor, digital frequency generation, digital balance control, automatic calibration, digital noise filters, integrated flexible control functions
  • 2 analog 0…10 V DC (option: 4-20 mA) 8 freely configurable 24 V DC signals, e.g. for reject confirmation
  • 2 floating: “error” and “metal” 8 freely configurable 24 V DC signals, e.g. for metal or acoustic alarm
  • High-frequency magnetic field, multi-channel operation, symmetrical receiver coils
  • Ferrous, non-ferrous (e.g. aluminium or copper) und stainless steel
  • Memory for up to 250 products, automatic product compensation, with TeachAssistant
  • IP65 (optionally IP66)
  • -30°C to +40°C / -22°F to 104°F, UL version: -20°C to +40°C / -4°F to 104°F, rel. humidity 20% up to 90% (non-condensing) Option: -40°C / -40°F or +55°C / 131°F
  • -30°C to +60°C / -22°F to 140°F Option: up to +90° C / 194°F
  • Standard: -30°C up to 55°C / -22°F up to 131°F Option: -40°C / -40°F or up to 120°C / 248°F or up to 180°C / 356°F
  • One phase 110-230 V AC, typ. consumption 20 W (max. 60 W)
  • RS232, provides documentation according to HACCP- and IFS-standard, USB- or ethernet option
  • Maintenance-free, selfcalibrating sensors
  • Integrated diagnostic software, automatic self-test

Accessories & Extras

The METAL SHARK® GF can be perfectly adapted to your production by various special designs and accessories.  Different temperature or hygiene requirements are taken into account as well as complicated product requirements for metal detection or the environment (ATEX).

  • The SHARKNET® software connects METAL SHARK® metal detectors with a central computer, providing centralized storage of all operating data plus batch and alarm documentation for HACCP and IFS compliance.
  • BRC-Kit for a fail-safe system according to the guidelines of the British Retail Consortium with metal detection alarm, product counter, product jam monitoring, required covers, rejection system as wel as monitoring of container (container full), air pressure of the reject system and reject functionality.
  • Product temperature up to max. +120°C, with this option the sensor has protection class IP54.
  • Increase of the IP protection class by adapting the sensor seal, installing additional seals and a double housing for the control electronics.
  • Stacking lights and signal horns/sirens available in different versions and IP protection classes.
  • Version for use in potentially explosive environments possible, ATEX zone 22.
  • Reports an error if the air pressure is too low for the functionality of the reject flaps.
  • Warns if the reject flap has not switched correctly after metal detection.
  • Monitors the flaps for complete switching to the good or not good position.
  • Material for simple functional testing, consisting of an insertion flap, through which spherical test specimens can be inserted into the pipeline, and a catchment grille for the test specimen including removal flap.
  • Functional test that does not require opening the product pipelines: Test pieces (FE/NFE/VA) are moved with compressed air through a separate test tube. The control unit indicates which sphere sizes are to be tested. Incl. push button for FE, NFE and VA testing, pneumatic valve, test specimen.
  • Test balls, diameter 25 mm made of plastic POM, with embedded metal ball made of iron, brass and stainless steel, certified ball size, metal type and certificate number are embedded in the test ball.
  • Issue of a Performance Verification Certificate (proof of functionality for audits) by CASSEL service technicians, e.g. during commissioning or maintenance.

Delivery Scope

  • Detection unit (sensor) GF incl. mounting frame
  • Control unit METAL SHARK®
  • Rejection unit (also avialable without reject system)
  • POM pipe for detection zone incl. quick clamping rings


  • Monitoring of loose, free-falling or compressed air conveyed products in pipelines
  • Quality assurance for incoming goods, outgoing goods or during running production
  • Machine protection, e.g. for mills or extruders

Further information for download:

Further information can be found in the data sheet which is available here for download as PDF.