[{"data":1,"prerenderedAt":94},["ShallowReactive",2],{"glossary-en-calibration-metrology":3},{"id":4,"title":5,"body":6,"description":81,"extension":82,"meta":83,"navigation":89,"path":90,"seo":91,"stem":92,"__hash__":93},"en_glossary/en/glossary/calibration-metrology.md","Calibration and Metrology: Traceability, Uncertainty, Zero & Span",{"type":7,"value":8,"toc":71},"minimark",[9,14,18,23,26,37,41,44,49,53,56],[10,11,13],"h2",{"id":12},"calibration-and-metrology","Calibration and Metrology",[15,16,17],"p",{},"These terms define the reliability and \"trustworthiness\" of a measurement result.",[19,20,22],"h3",{"id":21},"traceability","Traceability",[15,24,25],{},"The property of a measurement result whereby the result can be related to a reference (usually national or international standards like SI units) through a documented unbroken chain of calibrations, each contributing to the measurement uncertainty.",[27,28,29],"ul",{},[30,31,32,36],"li",{},[33,34,35],"em",{},"Simply put",": Being able to prove that your 1kg weight is actually 1kg because it was checked against a standard, which was checked against a master standard, and so on.",[19,38,40],{"id":39},"uncertainty-measurement-uncertainty","Uncertainty (Measurement Uncertainty)",[15,42,43],{},"A parameter characterizing the dispersion of values that could reasonably be attributed to the measured quantity. It tells us the \"doubt\" in the measurement.",[27,45,46],{},[30,47,48],{},"No measurement is perfect. A result is reported as \"100.00 g ± 0.01 g\", where 0.01 is the uncertainty.",[19,50,52],{"id":51},"zero-span","Zero & Span",[15,54,55],{},"The two fundamental points for calibrating a linear instrument.",[27,57,58,65],{},[30,59,60,64],{},[61,62,63],"strong",{},"Zero",": The output when the input is at its minimum (e.g., 0 kg -> 4 mA).",[30,66,67,70],{},[61,68,69],{},"Span",": The output when the input is at its maximum (e.g., 100 kg -> 20 mA).\nAdjustment of these two points is the most common form of calibration.",{"title":72,"searchDepth":73,"depth":73,"links":74},"",2,[75],{"id":12,"depth":73,"text":13,"children":76},[77,79,80],{"id":21,"depth":78,"text":22},3,{"id":39,"depth":78,"text":40},{"id":51,"depth":78,"text":52},"Ensuring measurement trust: The concepts of Calibration, Traceability, and Uncertainty.","md",{"tags":84},[85,86,22,87,88],"Calibration","Metrology","Uncertainty","Zero Span",true,"/en/glossary/calibration-metrology",{"title":5,"description":81},"en/glossary/calibration-metrology","SsapPmZZu27OLwTpfvSIR1eHQEHsim8aMYza1gz8ay0",1778229654801]