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4. Digital indicators
4.1 General presentation
80% of calibrated thermometers consist of a sensor (thermocouple, platinum resistance thermometer, thermistor, etc.) combined with a multimeter.
This multimeter can be a voltmeter or an ohmmeter, with a built-in temperature conversion function.
Most manufacturers offer indicators that can be configured according to the type of sensor used.
In order to reduce the number of corrections to be made to indicator readings, a number of adjustment procedures are available. In most cases, these adjustments consist of :
carry out resistance measurements at known standard temperatures ;
calculate coefficients according...
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Digital indicators
Calibration of specific sensors and thermometers
Bibliography
Websites
International Temperature Scale of 1990 (ITS-90), available on the BIPM website :
http://www.bipm.org/utils/common/pdf/its-90/EIT-90.pdf
Guide to the Expression of Uncertainty in Measurement (JCGM 200:2008), available on the BIPM website :
Standards and norms
AFNOR
- Metrology – Application guide to NF EN ISO 10012 "Measurement management systems – Requirements for measuring processes and equipment". – Design, development, control and improvement of measurement or test processes. - FD X07-007 -
- Metrology – Tests – Metrology in the company – Measuring equipment verification report. - FDX07-011 -
- Metrology – Metrology in the company –...
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