A microcalorimeter with a range of 0.1‐1.0 calories | Zendy

Scott J. M. | Zendy; Marlow J. A. | Zendy

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A microcalorimeter with a range of 0.1‐1.0 calories

Author(s) -

Scott J. M.,

Marlow J. A.

Publication year - 1982

Publication title -

limnology and oceanography

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.7

H-Index - 197

eISSN - 1939-5590

pISSN - 0024-3590

DOI - 10.4319/lo.1982.27.3.0585

Subject(s) - repeatability , thermocouple , calibration , standard deviation , linearity , linear regression , analytical chemistry (journal) , environmental science , materials science , mathematics , chemistry , electrical engineering , statistics , engineering , composite material , chromatography

Details are given of the construction of a microcalorimeter which measures samples with calorific values in the range of 0.1–1.0 (0.4–4.0 J). A printed circuit board, with the copper surface forming one side of a thermocouple array, provided the basis for the instrument. The potential difference produced across the thermocouples from the combustion of a sample is amplified a hundredfold and fed into any laboratory chart recorder within the range of 10–100‐mV fullscale deflection. The operation and calibration procedures are described together with linearity and repeatability experiments. A regression coefficient of 0.997 was obtained for the former and a standard deviation of <±4% for repeatability.

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