Microcomputer controlled integrator for Calvet‐type twin calorimeters
作者:
K. J. Dickens,
O. J. Kleppa,
H. Yokokawa,
期刊:
Review of Scientific Instruments
(AIP Available online 1980)
卷期:
Volume 51,
issue 5
页码: 675-677
ISSN:0034-6748
年代: 1980
DOI:10.1063/1.1136280
出版商: AIP
数据来源: AIP
摘要:
An improved integration method has been developed for use with Calvet‐type differential calorimeters. The new integrator is based on a voltage‐to‐frequency converter combined with a digital system interfaced to a microcomputer. The microcomputer provides programmed control of the integrator and, with little or no operator intervention, calculates the total heat effect making corrections for background and baseline drift. With this method a calorimetric precision of the order of ±0.1% has been achieved in experiments carried out at 651°C. This is about one order of magnitude of improvement over graphical methods and about a factor of 3 better than the analog integration techniques which we have used previously.
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