Quantify Accuracy of Load Cell
Quantify Accuracy of Load Cell
(OP)
Can't convince myself I'm doing this right.
0 - 25lb load cell
10V excitation
Rated Output: 2mV/V
nonlinearity: .10%
nonrepeatability: .05%
hysteresis: .10%
zero balance: 1.0%
E* = sqrt(.002^2 + .001^2 + .002^2 + .02^2) = 0.02 mv/V accuracy
*those numbers represent error % * Rated Output in mV/V
if I have 25lb/20mV full output at 10V excitation,
then my accuracy in lb is (25lb/20mV)*.02 mV/V = +/- .25 lb accuracy.
Disregard my amp and DAQ for the time being, I am just trying to assess the sensor. Thank you for any feedback, I can never straighten this out in my head.
0 - 25lb load cell
10V excitation
Rated Output: 2mV/V
nonlinearity: .10%
nonrepeatability: .05%
hysteresis: .10%
zero balance: 1.0%
E* = sqrt(.002^2 + .001^2 + .002^2 + .02^2) = 0.02 mv/V accuracy
*those numbers represent error % * Rated Output in mV/V
if I have 25lb/20mV full output at 10V excitation,
then my accuracy in lb is (25lb/20mV)*.02 mV/V = +/- .25 lb accuracy.
Disregard my amp and DAQ for the time being, I am just trying to assess the sensor. Thank you for any feedback, I can never straighten this out in my head.





RE: Quantify Accuracy of Load Cell
TTFN (ta ta for now)
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RE: Quantify Accuracy of Load Cell
RE: Quantify Accuracy of Load Cell
Zero balance isn't necessarily random either, depending on how you're using it, and how repeatable that is.
TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! https://www.youtube.com/watch?v=BKorP55Aqvg
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers Entire Forum list http://www.eng-tips.com/forumlist.cfm
RE: Quantify Accuracy of Load Cell
xnuke
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RE: Quantify Accuracy of Load Cell