CVGTCentral Victorian Group Training (Australia)
CVGTConstant Volume Gas Thermometer
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References in periodicals archive ?
An alternative to CVGT is the acoustic thermometer, which again relies on a simple relationship between thermodynamic temperature and measurable properties of the gas.
The discrepancies of the CVGT work and the recent success at measuring thermodynamic temperatures near 270 K with an acoustic thermometer have motivated the development of an acoustic thermometer for determining the thermodynamic temperature above 500 K (35).
Distinct advantages of acoustic thermometry over earlier CVGT work include higher precision, the ability to conduct experiments with continuously flowing gas to maintain purity, and the ability to use microwave resonances to characterize the volume of the resonator cavity in situ.
Discrepancies between the NBS/NIST CVGT data become significant at temperatures above 500 K.
Continuous purging reduces gas residence time approximately two orders of magnitude relative to the residence time in CVGT experiments.