How hot is hot? Building, using and calibrating thermocouples
Article Abstract:
It can be quite difficult to obtain accurate, repeatable measurements from a thermocouple. Factors to take into account include the impact of ambient temperatures, the temperature at the voltage measuring end and the fact that the Seebeck voltage is not linear with temperature. It is important to be aware that the thermocouple is not a precision measuring device. The most straightforward way to boost a thermocouple's accuracy is to calibrate it. The actual wire to be used should be calibrated to its anticipated temperature range and environmental conditions.
Publication Name: Quality Progress
Subject: Engineering and manufacturing industries
ISSN: 0033-524X
Year: 2000
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Avoiding calibration overkill: Ratio requirements need to be re-examined
Article Abstract:
The effectiveness of the 10:1 ratio, or Test Accuracy Ratio (TAR) or Test Uncertainty Ratio (TUR), in calibration and traceability is questioned. The 10:1 principle has been used over the last 100 years, however, it is argued that the principle does not acknowledge that there are many other factors that contribute to a measurement system. The metrology sector is currently calling for its replacement with the uncertainty budget.
Publication Name: Quality Progress
Subject: Engineering and manufacturing industries
ISSN: 0033-524X
Year: 1999
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By their measures shall ye know them
Article Abstract:
Measurement can be an important tool in encouraging people to perform better, but the results can be distorted by people's behaviour. Three examples of where behaviour influences measurement results are described.
Publication Name: Quality Progress
Subject: Engineering and manufacturing industries
ISSN: 0033-524X
Year: 2001
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