The document summarizes the commissioning of a TE011 cavity for surface resistance measurement using a calorimetric method. It describes the motivations, principles, and first tests of the cavity at IPN. The cavity allows for highly accurate surface resistance measurements over a wide temperature range of 1.8-4.2K. Initial RF tests showed higher than expected surface resistance due to suboptimal chemical treatment, but thermometric measurements achieved good sensitivity up to 52mT. Further cavity conditioning and thin film sample characterization are planned to fully realize the system's measurement capabilities.