4 replies to this topic

[selminay]

Hi everybody,
I would like to learn if someone gives me an web address where I can see the regulations about limits of Fe, Non-Fe, Stainless steel. And working principles of metal detectors in food industry? Do we have to use both Fe, Non-Fe, Stainless steel pieces?


Thanks,
Selmin

[Simon]

Hi everybody,
I would like to learn if someone gives me an web address where I can see the regulations about limits of Fe, Non-Fe, Stainless steel. And working principles of metal detectors in food industry? Do we have to use both Fe, Non-Fe, Stainless steel pieces?

In the EU the requirement is to produce safe and legal food, I don't think the laws tell you how to do it. Standards such as BRC / IFS do set out requirements for the systems food processors need to have in place in order to produce safe and legal food, but I don't know if they are specific on how sensitive a metal detector should be. Hopefully a user of one of the standards can enlighten us?
You can get metal detectors that can detect non ferrous, ferrous or both metals, but the size of pieces they can detect is determined by the product, pack size, density and many other product and process parameters. With regard to the size metal detectors can detect to 0.2 mm rings a bell with me. But don't quote me on that.

I have found a couple of articles that you may find useful whilst we can get you more information. What country are you in Selmin and what is your product /process?

The Detection Decision

A SQUID-based metal detector - comparison to coil and x-ray systems (PDF 288KB)

Regards,
Simon

[selminay]

Hi everybody,
I would like to learn if someone gives me an web address where I can see the regulations about limits of Fe, Non-Fe, Stainless steel. And working principles of metal detectors in food industry? Do we have to use both Fe, Non-Fe, Stainless steel pieces?
Thanks,
Selmin

Dear Simon,
First of all thanks a lot for your help. I saw this website while I am searching this metal detector issue in google.

I am chemical engineer and live in Turkey. We are producing chewing gum. Actually I want to learn that if we are checking metal detector with only Fe (Ferrous) probe, do we have risk of non-fe sizes. I mean if it detects Fe, can it automatically detect corresponding Non-Fe?

This is technical issue. So I need help. I hope I am expressing myself clearly.

Thanks and regards,
Selmin

[Charles.C]

Dear Selminay,

There are a number of technical experts on this site for this subject who will probably give you more info. A basic answer is apparently -

'All metals are either ferrous, nonferrous or stainless steel'
For source see -
http://osuextra.okst...FAPC-105web.pdf

As rgds specs, this will vary as commented by Simon depending on item (chewing-gum sounds interesting) / customer / regulatory etc.There is a long thread on this forum concerning this general subject which I guess you've seen already?

Added - To further simplify - the basic answer to yr question is yes, one machine can do all three items above and you will need 3 certified standard samples to evaluate the performance,these are normally available from the machine supplier.

Rgds / Charles.C

Edited by Charles.C, 17 August 2006 - 06:55 PM.

[selminay]

Dear Selminay,

There are a number of technical experts on this site for this subject who will probably give you more info. A basic answer is apparently -

'All metals are either ferrous, nonferrous or stainless steel'
For source see -
http://osuextra.okst...FAPC-105web.pdf

As rgds specs, this will vary as commented by Simon depending on item (chewing-gum sounds interesting) / customer / regulatory etc.There is a long thread on this forum concerning this general subject which I guess you've seen already?

Added - To further simplify - the basic answer to yr question is yes, one machine can do all three items above and you will need 3 certified standard samples to evaluate the performance,these are normally available from the machine supplier.

Rgds / Charles.C

Now it is clear. And web address explains what I need. Thanks a lot.

Regards,
Selmin