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tugboat
Aug 6, 2011, 7:43 PM
Post #26 of 29
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Registered: Jul 19, 2011
Posts: 106
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Hmmmm.... thanks Jim. Like i said...i'm no expert (as you can see) with this stuff. You seem to know your stuff. If you don't mind i have some questions that you might be able to help me with. I'll pm them to you.
Appreciate the educated response.
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tugboat
Aug 6, 2011, 7:51 PM
Post #27 of 29
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Registered: Jul 19, 2011
Posts: 106
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So Jim, its not the scan rate of my scale but the hz rate (which i interpret as the refresh rate) of the "display" that gives me the erratic/inconsistent readings (peak holds) when i do a drop test?
The scale company from which i purchased the equipment did point out that i can output from various ports on the back of the GSE scale to display a force curve on a PC. Am i understanding you correctly in this regard?
Thanks,...
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JimTitt
Aug 6, 2011, 8:32 PM
Post #28 of 29
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Registered: Aug 7, 2008
Posts: 1002
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The sampling rate of the signal amplifier (or conditioner as itīs normally called) is usually much higher, 500 to 2000 times per second is pretty normal for cheapish systems. But you couldnīt read the numbers on the display if they changed that fast so these are again sampled to a usable number, around 15 times a second is usual and sometimes lower. (The higher sampling rates also take a bit more computing power as well).
But there is usually a port (or two) on the back to hook into a computer or printer or into a data acquisition system like a data logger.
There are a few different connection standards and you need a compatible software package to get something from the results but that is easy if you talk to the your conditioner supplier.
Or conveniently, progress means you can get a USB load cell adaptor which does everything for you and comes with software as well, something like this which is 500Hz sampling:- http://www.loadcellshop.co.uk/All-Products-By-Photo/76-USB-Load-Cell-Adapter.html
Afraid this one is English but something similar will exist in the States for sure.
Like usual all very confusing but once you can get all the shit into a PC it all becomes much easier and usefull!
Jim
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tugboat
Aug 6, 2011, 10:10 PM
Post #29 of 29
(1706 views)
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Registered: Jul 19, 2011
Posts: 106
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Thanks Jim. Great info. Appreciate it.
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