What type of sensor do I use?
What type of sensor do I use?
(OP)
I am looking to measure a fiberous deposition that forms on a pressing roll. The thickness of the deposit ranges from 0mm at first, to 1mm thick and can cover the circumference of the roll uniformly or can form in a nonuniform blotchy fashion. The color of the deposition can range from white to brown against a dark colored roll surface. The roll is slow moving about 60 rpm.
I prefer to measure the roll on a continuous basis.
Thanks in advance
I prefer to measure the roll on a continuous basis.
Thanks in advance





RE: What type of sensor do I use?
<nbucska@pcperipherals.com>
RE: What type of sensor do I use?
RE: What type of sensor do I use?
How about an ultrasonic sensor? check out:
http://www.ab.com/catalogs/c114/3ultprox/30056.pdf
RE: What type of sensor do I use?
The Ultrasonic sensor looks promissing. However I think this models voltage output vs. target distance is much to low to detect a change of 1 mm. significantly. Am I wrong on this? Are there any more sensitive?
RE: What type of sensor do I use?
Perhaps if you don't need to actually measure the build up, just trigger an alarm if the buildup reaches a certain point, a capactive sensor might do:
http://www.ifmefector.com/usweb/zoomfun.nsf/ZoomData?readform&IA=KA0001&IB=&C=PS003&M=KA0001
RE: What type of sensor do I use?
I've ordered their catalog.
Is there a way to measure color change over time? The deposit does cause the roll to change color as the deposit layer builds up. I was taking pictures of the roll over time and measuring the color change using a program that can measure RGB value(Photoshop). I could then measure a % change from the original color, but this method is too labor intensive.
RE: What type of sensor do I use?
TTFN
RE: What type of sensor do I use?
http://store.xrite.com/inandsys1.html
TTFN
RE: What type of sensor do I use?
http://www.keyence.com/products/displace.html?TLs=OC5