Recently,\u00a0I\u00a0was informed\u00a0of a situation\u00a0that involved a digital infant scale and a “test weight” also known as a\u00a05 pound consumer barbell weight. Apparently, the barbell weight was used\u00a0to check the digital scale and it was thought that the scale had not been calibrated correctly due to a scale readout of 5.2 lbs.<\/p>\n
Actually, consumer barbell weights like those used in the above scenario are manufactured to tolerances between +\/-1% and +\/-7%, a significant range of tolerance as compared to NIST certified test weights. Using a consumer barbell weight with a wider manufacturing accepted tolerance than the scale may result in a scale display reading that seems inaccurate. A +\/-5% tolerance on a 5 pound consumer barbell weight means the weight can weigh from 4.75 lb to 5.25 lb and still be sold as a 5 pound weight. Compare that to a 5 pound NIST Class F weight which is manufactured and adjusted to within +\/-230 mg tolerance<\/a>. In the example above, the user contesting\u00a0the calibration accuracy<\/a> of the digital scale checked their consumer barbell weight again, this time on a certified Legal for Trade scale and found that it weighed 5.2 pounds, meaning the digital scale was correct.<\/p>\n We recommend using NIST certified Class F Sealed manufactured test weights<\/a> in most applications to check or calibrate medical scales and industrial scales.<\/p>\n","protected":false},"excerpt":{"rendered":" Recently,\u00a0I\u00a0was informed\u00a0of a situation\u00a0that involved a digital infant scale and a “test weight” also known as a\u00a05 pound consumer barbell weight. Apparently, the barbell weight was used\u00a0to check the digital scale and it was thought that the scale had not been calibrated correctly due to a scale readout of 5.2 lbs. Actually, consumer barbell weights\u2026 Read More: Weight Tolerances »<\/a><\/span><\/p>\n","protected":false},"author":18,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,8],"tags":[26,96,76],"class_list":["post-705","post","type-post","status-publish","format-standard","hentry","category-general","category-weights","tag-calibration","tag-certified","tag-test-weights"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t