Making the Right Choice Metal Detection, X-Ray or Both. Robert Rogers Senior Advisor for Food Safety & Regulation Mettler Toledo

Transcription

1 1 Making the Right Choice Metal Detection, X-Ray or Both Robert Rogers Senior Advisor for Food Safety & Regulation Mettler Toledo

2 IFSQN 5/20/16 Robert Rogers Making the Right Choice Metal Detection, X-Ray or Both

3 Agenda 3 1 Introduction 2 Metal Detection Technology 3 X-Ray Technology 4 Simplifying the Choice

4 Mettler Toledo 4 Introduction to Mettler Toledo Laboratory Solutions Process Analytics Industrial Weighing Product Inspection Logistics Solutions Retail Weighing Solutions We offer solutions along our customers value chain to help them to: Streamline processes Enhance productivity Reach compliance with regulatory requirements Optimize cost and waste

5 Increased Focus on Food Safety 5 Reasons for Product Inspection FSMA Food Safety and Inspection Service FSIS DIRECTIVE

6 Poll Question 6 How many of you currently have Metal Detection, X-Ray or Both? Metal Detection X-Ray Both Metal Detection and X-Ray Neither Metal Detection or X-Ray

7 Agenda 7 1 Introduction 2 Metal Detection Technology 3 X-Ray Technology 4 Simplifying the Choice

8 Metal Detection Systems 8 Balanced Coil Metal Detection Most common type Conductive principle Not suitable for heavy foil packaging

9 Balanced Coil Metal Detectors 9

10 Sensitivity 10 The sensitivity of a metal detector is defined as the smallest diameter metal sphere of a specific metal which is detectable in the center of the metal detector aperture.

11 Aperture Size 11 Larger Detector = Less Sensitivity

12 Types of Metal 12 Metal Type Magnetic Permeability Electrical Conductivity Ease of Detection Ferrous (iron) Magnetic good electrical conductor easily detected Non-Ferrous (aluminium, brass, copper, lead) non-magnetic generally good or excellent conductor relatively easily detected Stainless Steel (various grades) usually nonmagnetic usually poor conductors relatively difficult to detect

13 Orientation 13 Ferrous-Easy Ferrous-Difficult Non-Ferrous-Easy Non-Ferrous-Difficult

14 Factors Affecting Metal Detector Performance 14 Environmental Conditions Environmental conditions can influence metal detectors - Airborne electrical interference - Plant vibration - Temperature fluctuations Effects are more acute when operating at high sensitivity - High sensitivity is only achievable through a stable detector - Requires high performance noise and vibration immunity systems During evaluation, comparative tests should be carried out in-situ - NOT using lab tests

15 Agenda 15 1 Introduction 2 Metal Detection Technology 3 X-Ray Technology 4 Simplifying the Choice

16 X-Ray Inspection Systems 16 Density Detection Detection based on density Compatible with conductive packaging Foreign material detection Additional quality inspections

17 Typical X-Ray Layout 17 X-ray Generator LAMPSTACK Detector User I/O Connectors Interlock Circuit Power Supply

18 X-ray Generator 18 Operation Electron Beam High voltage potential between anode and cathode create an electron beam When electron beam collides with target and is decelerated resultant energy is either dissipated as heat (98%) or released as an X-ray photon. X-ray beam is electromagnetic energy transmitted at a very high frequency and energy. X-ray Beam (Photons) PRODUCT

19 Control of Physical Contaminants XR 19 As the product passes over the detector each line of grey level data is rebuilt back into a complete pack image: Each image is made up of pixels. Each pixel can have a value which goes from black to white (0 to 255). Product flow Detector X-ray image

20 Detection Capability 20 Density Chart (kg/m3) Water 1.0 Hair 0.32 Cherry Pit 0.56 Insects 0.59 Wood (Oak) 0.65 PP 0.9 Ice 0.92 UHMW 0.94 Nylon 1.15 PVC 1.7 Teflon 2.19 Bone 2.2 Stone 2.52 Glass 2.6 Aluminum 2.71 Iron 7.15 Steel 7.86 SS 7.93 Most food product, slightly more than 1.0 Not Detectable Stainless Steel 316 Specific gravity is the ratio of the density of a substance compared to the density (mass of the same unit volume) of a reference substance Detectable dependent on products thickness/homogeneity/density and size of contaminant Wood

21 Multiple Quality Inspections 21 Contamination detection capabilities for metal, glass, stone, high density plastics and more. Ability to count objects and identify if there are any missing components. Ability mask certain areas of the packaging to ensure the best detection capabilities.

22 Poll Question 22 Where are your foreign material inspection systems located? Raw Material Batching/Blending Grinding/Cutting/Further Processing Packaging/End of Line

23 Agenda 23 1 Introduction 2 Metal Detection Technology 3 X-Ray Technology 4 Simplifying the Choice

24 Location 24 Raw Material Batching/Blending Grinding/Cutting/ Further Processing Packaging/End of Line HACCP

25 Application 25

26 Decision Tree 26

27 Review 27 Identified contamination type Metal Detectors work based on conductivity X-rays work based on density Position in the process Multiple inspection considerations