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Digital Multimeters
how to calculate the accuracy Dmm4020
how to calculate the accuracy Dmm4020
Posted
Wed, 25 Jan 2023 15:10:41 GMT
by
wachanasunthon, Tanat
<p>In manual there is the accuracy table with value 0.03+0.004 and mark&nbsp;*uncertainty given as +-(%reading+%of range).<br> How can I calculate the accuracy of meter.If I measure 10 ohms with range 200 ohms and 1 year.I can multiple 10 with 0.03 and 20 with 0.04 or<br> 10 x (0.03/100) + 20 x (0.04) <grammarly-desktop-integration data-grammarly-shadow-root="true"></grammarly-desktop-integration></p> <grammarly-desktop-integration data-grammarly-shadow-root="true"></grammarly-desktop-integration>
accuracy.PNG (39.2 KB)
Posted
Thu, 26 Jan 2023 19:36:16 GMT
by
C, Andrea
You have it correct.
For the 200 ohm range, the 1 year spec: 0.03% of value + 0.004% of range
For 10 ohm DUT measured on this range:
0.03% x 10 = 0.003 ohms
0.004% x 200 = 0.008 ohms
Total Error Budget: 0.011 ohms
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