Magnetic metal detector for sawmill

[hunter63]

Hello
I've had experience with metal detectors since 1986. I received a detector for repair that uses magnets wound on a 67-turn coil. There are nine of them, with reverse polarity. The entire device is encased in epoxy resin, which is insoluble in xylene and toluene.

My question:
1. What can I use to dissolve epoxy resins?
2. I'm trying hot air.
3. Does anyone know this type of metal detector and have any knowledge?

[Detectorist#1]

What is the connection between this type of metal detector and your question for specific metal detector for sawmill application?

[moodz]

Hello
I've had experience with metal detectors since 1986. I received a detector for repair that uses magnets wound on a 67-turn coil. There are nine of them, with reverse polarity. The entire device is encased in epoxy resin, which is insoluble in xylene and toluene.

My question:
1. What can I use to dissolve epoxy resins?
2. I'm trying hot air.
3. Does anyone know this type of metal detector and have any knowledge?

Q1. methyl ethyl ketone. MEK from good paint shops.

[ivconic]

Methylene chloride (dichloromethane, (CH2Cl2)) which I have mentioned several times on the forum.
I have successfully dissolved the "worst" epoxy with it.
Attention!
Carcinogenic!
Highly flammable!
In most countries under strict government control!
But until today I have not heard that there is anything more effective.

[Carl-NC]

What is the connection between this type of metal detector and your question for specific metal detector for sawmill application?

The funny thing is, he never asked about a metal detector for a sawmill. See post #1, it really said nothing. I've been waiting 5 days to see what this is about.

[Detectorist#1]

You are right. The post#1 isn't a question.

[hunter63]

Hello, gentlemen, I'm not talking about any PI or VLF, but rather an industrial plate metal detector (sensor) based on toraoidal magnets with coils wound around them. Does anyone know anything about this type of detector? That's all there is to it.

[hunter63]

IVCONIC
Thank you very much, I will try to buy chemicals, thank you for the tip

[Carl-NC]

Hello, gentlemen, I'm not talking about any PI or VLF, but rather an industrial plate metal detector (sensor) based on toraoidal magnets with coils wound around them. Does anyone know anything about this type of detector? That's all there is to it.

No idea.

[Detectorist#1]

It is impossible to give an answer if the question is not clear.

[ivconic]

"...industrial plate metal detector (sensor) based on toraoidal magnets with coils wound around them..."

I like to play guessing games.
According to this description, it can be a fluxgate magnetometer or a specialized inductive proximity sensor.
Most common industrial application which fits the description is a sensor with a "toroidal magnet" as core and coils .
It is highly sensitive and specifically designed to detect magnetic fields, making it ideal for industrial metal detection.
However, without a detailed explanation; it is difficult to guess which type of device it is.

[Carl-NC]

but rather an industrial plate metal detector (sensor) based on toraoidal magnets with coils wound around them.

I don't know what you mean by a "toroidal magnet." Never heard of such a thing. Do you mean a toroidal ferrite core? Is there a metal rod running through the toroidal core?

[hunter63]

Hello gentlemen, these are nine toroidal magnets with a coil wound around them. The magnets are positioned so that they repel each other. The whole thing is enclosed in a steel plate placed under the conveyor belt and is designed to detect steel. I think it's some kind of vibration-resistant magnetometer. Detecting steel shuts down the conveyor belt until it's reset. Best regards.

[ivconic]

It is certainly some kind of device that works on some principle of magnetometry.
It does not necessarily mean that it is a standard product that is widely distributed.
It is possible that it is a special order and something unique.
But unique only as a design and not as a principle of operation.
...
Here is an example of how an ordinary transformer can be used for a very sensitive magnetometer.
This is a very interesting project by the way.

[pito]

Hello gentlemen, these are nine toroidal magnets with a coil wound around them. The magnets are positioned so that they repel each other.

Can you sow the picture of that or make a drawing, it is responding to non magnetic metals, what is the range for detecting a nail ?
Conveyor is moving fast or slow ?