userx2
Full Member level 3
Hello,
As part of a new project, I need to detect a short 1" metal sleeve on a rubber water filled hose coming past.
The OD of the sleeve will be about the same as the OD of the hose and that is around 12mm / 1/2".
The sleeve is likely going to be stainless (rust issues) and the wall thickness is thin. Possibly around 0.8mm / 30mils.
I am not 100% sure yet what the mechanical guys are going to land on for that. The OD of the sleeve.
The hose and sleeve travel past the sensor within about 6.5mm / 1/4"
So the question is how to detect this reliably.
IR proximity seems to have issues with the signal not being very different form hose to metal.
Optical? I have concerns about this when the sleeve or hose becomes dirty and the reflection changes.
Hall effect? I don't think it can detect stainless. It will also need a biasing magnet somewhere. I am not sure.
Perhaps someone here has an idea of how to best detect this?
Best regards
X
As part of a new project, I need to detect a short 1" metal sleeve on a rubber water filled hose coming past.
The OD of the sleeve will be about the same as the OD of the hose and that is around 12mm / 1/2".
The sleeve is likely going to be stainless (rust issues) and the wall thickness is thin. Possibly around 0.8mm / 30mils.
I am not 100% sure yet what the mechanical guys are going to land on for that. The OD of the sleeve.
The hose and sleeve travel past the sensor within about 6.5mm / 1/4"
So the question is how to detect this reliably.
IR proximity seems to have issues with the signal not being very different form hose to metal.
Optical? I have concerns about this when the sleeve or hose becomes dirty and the reflection changes.
Hall effect? I don't think it can detect stainless. It will also need a biasing magnet somewhere. I am not sure.
Perhaps someone here has an idea of how to best detect this?
Best regards
X