Study and characterization of a microcalorimeter thermostat

Luca Oberto, Luciano Brunetti, Claudio Calosso

Abstract

A high-accuracy adiabatic microcalorimeter has been developed at Istituto Nazionale di Ricerca Metrologica (INRIM, Torino, Italy) for the realization of the radio frequency and microwave power primary power standard. The apparatus is intended to evaluate the efficiency of proper power sensors of thermoelectric or bolometric type by measuring their losses in terms of heat produced. These kind of measurements require a good thermal stabilization of the measurement chamber, therefore a dedicated thermostat has been designed, assembled and characterized at INRIM in order to obtain a thermal stability of 1 mK on a daily basis.

Keywords

Adiabatic Microcalorimeter, Thermostat, Microwave Primary Power Standard

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IMEKO-TC4-2013-015.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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