metal belt alignmen sensor 4-20mA

R

Thread Starter

Romeli

Please any one help,
For continues casting with metal belt conveyor, we will install belt
sensor for alignment.
This sensor must be non contact, install inside of belt,
this belt was periodically replace, so the sensor must be non contact
how to detect , if eny
lvdt or inductive sensor or other
thank
 
Dear Friend

You want a non Contact type sensor for installing on the convayor belt. You can go for Eddy Current type probe or any proximity probe. It may be displacement type, velocity or acceleration type. For latter two you can easily get dislacement values by integerating it. So, it will serve your purpose as it will be a non contact type and read allignment values in terms of distance.

The thing you have to change is the target material with each new convayor.
 
M

Matthew Hyatt

Photo electric, prox. sensor, magnetic...

More importantly, what is causing the belt to go out of alignment such that it needs to be replaced so often???

MJH
 
In the food process conveyor type stuff with bakery oven belt proximity the device typically used is also used for food quality. There are metal detection devices that also provide a 4 to 20 ma. output for metal detection ie. concentration, one would provide cover for one conveyor tracking system. In conveyors a tracking pinch roler tracking device could be controlled by PID and the analog signal feedback from a metal detection device.

Bitmore
 
Dear All,

Thank for your suggestion; Replacing SS belt due to lifetime of belt surface, 5-7 time casting @ 4 hour duration the surface become not straight. we use silicon spray on conveyor surface to avoid material sticky on belt. Periodically (often) replacing belt was Not only unstraight & melt acreation on belt but heat transfer performace of belt is importance think. The aligment of belt was control by steering hydroulic system. The belt was keep in the middle position by automatic. So analog sensor was required. The procedure of replacing belt was make our sensor aligment broken. our old type sensor is potentiometer & mechanical roller. additional information inside of belt there was pressurized water for cooling system, melt themperature inlet 1130 degC, outlet 810 degC. please help me. We need metal belt aligment sensor (non contact), water resistance.

Thanks,
Romly, Elect Eng
 
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