load cell

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shahilva2002@gmail.com Participant Join Date: Nov 2008 Posts: 1	load cell 11/30/2008 12:33 AM
	how we check the out put of a load cell? what is the mim and max res of load cell during unloaded condetion? different types of load cell
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Vulcan Guru Join Date: Oct 2006 Location: Northern Mindanao, Philippines Posts: 2147 Good Answers: 53	#1 Re: load cell 11/30/2008 5:34 AM
	The way to test the output of a load cell is by supplying a voltage (read the specifications) to the excitation wires of the load cell and measuring the voltage across the signal wires. With no load, the voltage (in millivolts) should be zero or thereabouts. __________________ Miscommunication: when what people heard you say differs from what you said. Make yourself understood.
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Sparkstation Guru Join Date: Nov 2007 Location: Christchurch, (The Garden City), South Island, New Zealand Posts: 4395 Good Answers: 230	#2 In reply to #1 Re: load cell 11/30/2008 5:37 AM
	Hello Vulcan from me Kind Regards.... __________________ "The number of inventions increases faster than the need for them at the time" - SparkY
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Glennx Participant Join Date: Nov 2008 Posts: 1	#3 Re: load cell 12/01/2008 1:23 AM
	Your reciver should put out a 12 or 24 volt exciter voltage to the load cell. The output of the loadcell should be read in milivolts. Anything above 25 milivolts I would consider the load cell as bad, Zero milivolts is ideal. The loadcells don't take bumps and bangs or overloads very effectively without damage. Sometimes when they get damaged you can recalibrate the receiver and they will work okay. Many times the receiver if it is a Hardy Load cell receiver with an indication on it will flash with an error indicated on it. Sometimes you can do a soft calibration or zero it and then you will be allowed to perform an hard calibration with weights on the loadcells. 99% of the time the problem is a warped or damaged loadcell when they don't work. I have had some receivers go bad. If you change out the loadcell and the unit still will not calibrate, it may be the receiver.
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nava Active Contributor Join Date: Mar 2007 Location: Bangalore-India Posts: 22	#4 Re: load cell 12/01/2008 1:25 AM
	The voltage input and the signal voltage from the load cell will vary depends on the load range. check the supplier data sheet for more details. __________________ The best way to escape from a problem is to solve it ; The full use of today is the best preparation for tomorrow:
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Glennx (1); nava (1); Sparkstation (1); Vulcan (1)

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