Method and apparatus for determining a phase transition of a substance
AssigneeNederlandse Organisatie voor toegepastnatuurwetens chappelijk Onderzoek TNO
InventorHuib Blokland
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Abstract
A method for determining a phase transition of a substance, comprising: generating a first measuring signal by measuring a substance-directed heat flow; generating a phase-shifted measuring signal which is phase-shifted in relation to the first measuring signal; determining a difference signal between the first measuring signal and the phase-shifted measuring signal and determining the phase transition if a property of the difference signal meets a predetermined condition.
Claims10
A method for determining a phase transition of a substance, comprising:
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- generating a first measuring signal by measuring a substance-directed heat flow;
- generating a measuring signal phase-shifted in relation to the first measuring signal;
- determining a difference signal between the first measuring signal and the phase-shifted measuring signal and
- determining the phase transition if a property of the difference signal meets a predetermined condition.
An apparatus for determining a phase transition of a substance, comprising:
- a heat flow meter for measuring a substance-directed heat flow, which heat flow meter has a meter output for delivering a first measuring signal constituting a measure for the value of the measured heat flow;
- means for generating a phase-shifted measuring signal;
- a difference-determining element for determining a difference signal on the basis of the first measuring signal and the phase-shifted measuring signal;
- and
- means for detecting the phase transition on the basis of the difference signal.
Dependencies are inferred from the claim text.