A. Accuracy<\/strong><\/span>
\n A measuring instrument is said to be proper if it has good accuracy measurement results indicate that small uncertainties.<\/span> It can also be understood as the result of measuring how close to the true value.<\/span> In this case before a measuring instrument is used, it must be ensured that the condition of the tool truly in good condition and unfit for use, which is a tool in a state with a well calibrated.<\/span> Calibration is resulting uncertainty of measuring results have been great.<\/span><\/p>\n

Classification Class Meter To obtain measurement results closer to the actual price.<\/span> Need to pay attention to the error limit indicated on the measuring instrument.<\/span> Classification of electrical measuring instrument according to IEC standard no.<\/span> 13B-23 specifies that the accuracy of measuring devices are divided into eight classes, namely: 0.05;<\/span> 0.1;<\/span> 0.2;<\/span> 0.5;<\/span> 1.0;<\/span> 1.5;<\/span> 2.5;<\/span> and 5. The classes kesalalahan means that the magnitude of the gauges on the boundaries of each time measuring \u00b1 0.05%, \u00b1 0.1%, \u00b1 0.2%, \u00b1 0.5%, \u00b1 1, 0%, \u00b1 1.5%, \u00b1 2.5%, \u00b1 5% of relative maximum price.<\/span><\/p>\n

From 8 classes such measuring instruments are classified into four groups according to areas of application, namely: (1) Class of class 0.05, 0.1, 0.2 including the highest precision measuring instrument.<\/span> Usually used in a standard laboratory.<\/span> (2) Class of measuring instruments of class 0.5 accuracy and precision have the next level of 0.2 grade measuring instrument is used for precision measurements.<\/span> This instrument is usually portable.<\/span> (3) Class of class 1.0 accuracy and precision have at a level lower than 0.5 grade measuring instrument.<\/span> It is usually used in small portable measuring instrument or measuring tools on the panel.<\/span> (4) Class of class 1.5, 2.5, and 5 of this measure is used on the panels that did not heed the precision and accuracy.<\/span><\/p>\n

B. Calibration<\/strong><\/span>
\n Measuring devices need to be investigated before they were used in order to calibrate the measuring results can be trusted.<\/span> When calibration must always place the pointer on the real zero point, when the measuring instrument to be used.<\/span> Often on a measuring instrument needle is not in the zero point that should be used so that when the value read is always larger or smaller than they should thus contributing to what is called a systematic misprint.<\/span><\/p>\n

In general terms calibration here is to compare your measurement tool by reference.<\/span> Reference (standard) which is used to calibrate the measuring instrument can be reached with a few stages.<\/span> Each measurement system should be proven reliability in measuring, verification procedure is called calibration.<\/span> calibration or user calibration for the measuring instrument is very important.<\/span> Calibration can reduce the error increases measurement accuracy.<\/span><\/p>\n

Step calibration procedure using a comparison of instruments to be calibrated with standard instruments.<\/span> Here is exemplified ampermeter calibration for direct current and direct current in a simple voltmeter.<\/span><\/p>\n

Calibration ampermeter<\/strong><\/span>
\n Simple calibration is performed on ampermeter direct current.<\/span> The trick can be done by comparing the current through ampermeter be calibrated (A) with standard ampermeter (As).<\/span> Ampermeter steps (A) and ampermeter standard (As) installed in series look at the picture below 10.1.<\/span>
\n<\/a>
\n Figure 10.1 Calibration ampermeter Direct Current<\/span><\/p>\n

Ampermeter should be used as a standard meter is ampermeter which has a high precision class (0.05, 0.1, 0.2) or the next level of precision (0.5).<\/span> Figure 10.1 indicated that the IA is the current measured at the meter to be calibrated, Is is the current standard is regarded as actual current prices.<\/span> If the absolute error (absolute) of ampermeter given the symbol \u03b1 and commonly called the error of measuring instruments, it can be written:<\/span>
\n \u03b1 = IA – Is<\/span><\/p>\n

Comparison of error of measuring instruments (\u03b1) to the price of the actual current (Is), namely: \u03b1 \/ Is usually called the relative error or error rate.<\/span> Expressed as a percent.<\/span> While the difference or the difference between the standard price or a price sebenanya measurement called the price correction is written:<\/span>
\n Is – IA = k<\/span>
\n Price comparison corrections to the measured current (k \/ IA) called correction or correction relative ratio expressed in percent<\/span><\/p>\n

Calibration direct current voltmeter<\/strong><\/span>
\n Similarly in ampermeter, direct current voltmeter calibration is done by comparing the price of a measurable voltage voltmeter calibrated (V) with a standard voltmeter (Vs).<\/span> The steps voltmeter (V) and a standard voltmeter (Vs) mounted in parallel look at the picture below 6.2.<\/span>
\n<\/a>
\n Figure 10.2 Calibration direct current voltmeter<\/span><\/p>\n

Voltmeter that is used as a standard meter is a voltmeter that has a high precision class (0.05, 0.1, 0.2) or the next level of precision (0.5).<\/span> In the figure 10.2, V is the voltage measured in meters are calibrated, while the standard voltage Vs is regarded as the actual voltage value.<\/span> If the absolute error (absolute) of the voltmeter by the symbol \u03b1 and commonly called the error of measuring instruments, it can be written:<\/span>
\n \u03b1 = V – Vs<\/span><\/p>\n

Comparison of the errors of measuring instruments (\u03b1) to the price of the actual voltage (Vs), namely: \u03b1 \/ Vs is called the relative error or error ratio is expressed as a percent.<\/span> While the price difference with the price sebenanya or standard of measurement called a correction can be written:<\/span>
\n Vs – V = k<\/span>
\n Similarly, comparison of the correction of the measured flow (k \/ V) ratio is called the relative correction or correction expressed as a percent.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

A. Accuracy A measuring instrument is said to be proper if it has good accuracy measurement results indicate that small uncertainties. It can also be understood as the result of measuring how close to the true value. In this case before a measuring instrument is used, it must be ensured that the condition of the …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2232],"tags":[2343,2337,2345,2339,2340,2342,2346,2341,2344,2338],"class_list":["post-1805","post","type-post","status-publish","format-standard","hentry","category-english","tag-calibration-u0026-measurement-services-ltd","tag-calibration-measurement","tag-calibration-measurement-capabilities-cmc","tag-calibration-measurement-capability","tag-calibration-measurement-capability-calculation","tag-calibration-measurement-capability-definition","tag-calibration-measurement-instruments","tag-calibration-measurement-requirements-summary","tag-calibration-measurement-standard","tag-calibration-measurement-uncertainty"],"_links":{"self":[{"href":"https:\/\/www.tneutron.net\/elektro\/wp-json\/wp\/v2\/posts\/1805","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tneutron.net\/elektro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tneutron.net\/elektro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tneutron.net\/elektro\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tneutron.net\/elektro\/wp-json\/wp\/v2\/comments?post=1805"}],"version-history":[{"count":1,"href":"https:\/\/www.tneutron.net\/elektro\/wp-json\/wp\/v2\/posts\/1805\/revisions"}],"predecessor-version":[{"id":5356,"href":"https:\/\/www.tneutron.net\/elektro\/wp-json\/wp\/v2\/posts\/1805\/revisions\/5356"}],"wp:attachment":[{"href":"https:\/\/www.tneutron.net\/elektro\/wp-json\/wp\/v2\/media?parent=1805"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tneutron.net\/elektro\/wp-json\/wp\/v2\/categories?post=1805"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tneutron.net\/elektro\/wp-json\/wp\/v2\/tags?post=1805"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}