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T4D #3 - Metrology, Calibration and the Ultimate Multimeter Check

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Published on May 6, 2012

A talk about calibration, measurement and standards terminology. A look at my proof of concept ultimate digital multimeter check.
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Topics covered or mentioned in this video:

* Calibration, precision references, standards, ISO9000, NIST (national institute of standards and technology), traceability, uncertainty, repeatability.
* Calibration certification, accuracy, resolution, absolution accuracy, ppm (parts per million).
* I received some voltage references I will be testing and learning more about their performance.
* The precision voltage references I have or will be receiving:
AD581KH 10V
AD586JN 5V
ADR130 V-Ref Programmable 0.5V/1V 4mA
ISL21009BFB850Z V-Ref Prec,5.0V,7mA
ISL21009BFB812Z V-Ref Prec,1.25V,7mA
REF5050AID 5.0V Voltage Reference
REF102 V-Ref Precision 10V 10mA
* Precision Metal Film Resistors RC Series 0.1% tolerance, Temperature Coefficient 15ppm/°C:
1.24kΩ
255kΩ
46.4kΩ
124Ω
255Ω
* Multimeters used: Fluke 287, Metrix MTX3282, Brymen TBM867 / BM867, Fluke 287, ISO-TECH IDM207
* Fluke 8846A bench multimeter 6.5 digit (1 000 000 count) accuracy of 0.0024%
* 8.5 digit HP 3458A DMM - accuracy of 0.0008%
* HP 3478A 5.5 digit

* What is traceability?
* What is uncertainty?
* What is a standard?

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