A study was conducted to examine the influence of anode material on heat dissipation efficiency in a plasma torch cooling system. Computer modeling was used to calculate thermal and hydrodynamic processes for anodes made of M1 copper, L63 brass, and BrO8Ts4 bronze. Copper achieved the highest heat dissipation efficiency due to its high thermal conductivity, as confirmed by a full-scale experiment. The results demonstrate that the choice of anode material is a key factor in improving the reliability and service life of a plasma torch.

Keywords: plasma torch, anode unit, copper, brass, bronze, heat sink, thermal conductivity, computer modeling, finite element method, cooling efficiency, thermal conditions

In today's market economy, a large number of organizations engaged in the provision of services aimed at verification of various measuring instruments, such as water meters, gas meters, electricity meters and others. For such companies, it is of interest to expand the scope of accreditation, which will significantly expand the range of services provided. The article presents the algorithm of the procedure for expanding the scope of accreditation with a description of the main stages.

Keywords: verification of measuring instruments, accreditation scope