Thermometry (temperature measurement)
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چکیده
Thermometry ................................................................................................................................................. 1 Applications .............................................................................................................................................. 1 Temperature metrology ............................................................................................................................. 2 The primary standard: the TPW-cell ..................................................................................................... 5 Temperature and the ITS-90 ..................................................................................................................... 6 The Celsius scale ................................................................................................................................... 6 Thermometers and thermal baths .......................................................................................................... 7 Metrological properties ............................................................................................................................. 7 Types of thermometers.............................................................................................................................. 9 Liquid-in-glass ...................................................................................................................................... 9 Thermocouple ..................................................................................................................................... 10 Platinum resistance (RTD) .................................................................................................................. 11 Thermistors ......................................................................................................................................... 12 Integrated Circuit temperature sensors (IC thermometer) .................................................................. 12 Radiation thermometers and other non-contact thermometers ........................................................... 12 Temperature data acquisition .................................................................................................................. 14 Laboratory practice ................................................................................................................................. 14 References ................................................................................................................................................... 15
منابع مشابه
Infrared Thermopile Temperature Measurement Technique in Microwave Heating Systems
Temperature measurement in microwave systems is essential for thermally driven processes, namely, catalytic reactions and ceramic sintering. Although, the application of direct thermometry methods, namely, thermocouples, have been commonly articulated in the available literature, however, contacted temperature measurement mechanisms have aroused concerns associated with the disruption of the el...
متن کاملDiagnostic accuracy of three different methods of temperature measurement in acutely ill geriatric patients.
OBJECTIVE we examined the diagnostic accuracy of different methods of body temperature measurement to diagnose infection in geriatric patients presenting to the emergency department (ED). METHODS this observational study was done in consecutive patients ≥75 years old presenting to the ED. Body temperature was determined by tympanal thermometry, temporal artery thermometry and rectal temperatu...
متن کاملThermometry (temperature measurement)
Thermometry ................................................................................................................................................. 1 Applications .............................................................................................................................................. 2 Temperature metrology ............................................................
متن کاملMolecular tagging thermometry for transient temperature mapping within a water droplet.
We present the progress made in developing a molecular tagging thermometry (MTT) technique for achieving spatially and temporally resolved temperature measurements within a small water droplet over a solid surface. For MTT measurement, a pulsed laser is used to tag phosphorescent 1-BrNp.Mbeta-CD.ROH molecules premixed with water. Long-lived laser-induced phosphorescence is imaged at two success...
متن کاملPrimary tunnel junction thermometry.
We describe the concept and experimental demonstration of primary thermometry based on a four-probe measurement of a single tunnel junction embedded within four arrays of junctions. We show that in this configuration random sample specific and environment-related errors can be avoided. This method relates temperature directly to Boltzmann constant, which will form the basis of the definition of...
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