GAS TURBINE ASSEMBLY

A Gas turbine assembly comprises:• a compressor (3) configured to compress air; the compressor (3) extending along a longitudinal axis and being provided with an outlet diffuser (26) and with a compressor casing (9a);• a plenum (30), which is a closed volume delimited at least by an outer casing (31) coupled to the compressor casing (9a) and by the outlet diffuser (26); the outlet diffuser (26) being designed to discharge the compressed air into the plenum (30);• a combustor (4) partially arranged in the plenum (30);• at least one pressure sensor (7; 7a; 7b; 7c) facing an area of the plenum (30) comprised between the outer casing (31) and the outlet diffuser (26).