New effective coaxial twin-load microcalorimeter system

This paper describes a new coaxial twin-load microcalorimeter, which was designed and fabricated to be installed at the national metrology institute of Egypt (NIS). Each component of the microcalorimeter measurement setup was measured and characterized separately to ensure its performance. The effective efficiency of a type-N thermistor mount at different frequency points was measured using the designed microcalorimeter setup. A comparison between these measured values and the corresponding effective efficiency measured by the microcalorimeter setup of the national metrology institute of Turkey (TÜBİTAK UME) was done to validate the accuracy of the new setup.