Influence of the sample position in compensated scanning calorimeters

Journal Article · Mon May 01 04:00:00 EDT 1978 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac50027a012· OSTI ID:6038908

Randzio, S L; Sunner, S

In determining the influence of sample position on the measured signal in compensated scanning calorimeters, Swedish researchers from the University of Lund found that the signal measured is equal to a thermal signal generated in the sample only under the conditions that 1) the investigated sample is inside the compensation feedback loop and 2) the gain of the amplifier is sufficiently high. The theoretical analysis revealed that when the sample is outside the feedback loop, the signal measured depends also on the time constant of the sample and the heating rate, even if the gain of the amplifier is very high.

• OSTI ID: 6038908
• Journal Information: Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 50; ISSN ANCHA
• Country of Publication: United States
• Language: English

Related Subjects

440300* -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
CALORIMETERS
EFFICIENCY
FEEDBACK
MEASURING INSTRUMENTS
SIGNALS