Sensitivity Analysis for the Calorimetric Probe

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Abstract
Application of a unique calorimetry technique to the measurement of extremely high gas enthalpies and temperatures was described previously. The technique is based on measurement of the change in coolant fluid energy which is observed when a continuously flowing sample of the ``unknown'' gas through the probe is shut off. Effects of external cooling requirements and radiation are thereby canceled, permitting direct measurement of local gas enthalpy (from which, under certain conditions, gas temperature may be deduced). One of the principal problems encountered in the application of this device is its sensitivity under different conditions. The present paper describes an approximate method for estimating this sensitivity. Comparison of the results with measured sensitivities indicated appreciable scatter, but was adequate to confirm the general approach.

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