Digital Scale help please - The Planted Tank Forum
 
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post #1 of 8 (permalink) Old 07-05-2006, 08:01 PM Thread Starter
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Digital Scale help please

I left of vaction and am back, ready to start dosing again. I went to measure out the ferts and the digital scale I bought (from ebay) says it needs to be recalibrated. I need 200g to recalibrate it. Anyone have any idea what I can use to recalibrate it without having to buy an expensive weight?

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post #2 of 8 (permalink) Old 07-05-2006, 08:33 PM
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1 penny is 2.5 grams so 80 pennies is 200 grams..
Just an idea.
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post #3 of 8 (permalink) Old 07-05-2006, 08:51 PM
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You must find something small enough to fit on the scales and weigh 200 g exactly ,if you have access to another scales,weigh a couple of objects that total exactly 200 g then use it to recalibrate yours.
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post #4 of 8 (permalink) Old 07-05-2006, 09:19 PM
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I think that if they had another scale it would be a problem.
Find something that has the weight listed on it and weigh


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post #5 of 8 (permalink) Old 07-05-2006, 09:42 PM Thread Starter
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Thanks for all the help guys. I just talked to a friend of mine working in a lab and he said he'll take the scale into work tomorrow and recalibrate it using the weights he has there.

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If I could harness the power of the sun, I'd focus it on my plants and watch them grow.
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post #6 of 8 (permalink) Old 07-05-2006, 09:49 PM
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When you move a scale, doesn't that kill the calibration?

Maybe a cheap weight set...
http://saveonscales.com/scale_calibr...ghts_sets.html

The "pro" ones are a bit more dough.

The first question you must ask yourself when purchasing any test weights is:
"Do I want to be able to calibrate my scale or simply verify that the scale is weighing accurately?"

Read more here -> http://www.algen.com/Weights1.htm


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post #7 of 8 (permalink) Old 07-06-2006, 12:03 AM
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Quote:
Originally Posted by conduct
1 penny is 2.5 grams so 80 pennies is 200 grams..
Just an idea.
Cents can vary in weight up to 0.2g or more. You would get a very "rough" 200g from 80 cents.
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post #8 of 8 (permalink) Old 07-06-2006, 12:34 AM
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Nickels weigh right at 5 grams. Old nickels 4.9 grams due to wear. Or you could weigh a small container and add enough water to get to 200 grams. Water weighs 1 gram per cc.
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