Pressure measurement because atmospheric pressure is always changing and the reference in this case is fixed at 1 bar. To produce an absolute pressure sensor, the manufacturer seals a high vacuum behind the sensing diaphragm. If the process-pressure connection of an absolute-pressure transmitter is open to the air, it will read the actual barometric pressure. The SI unit for pressure is the pascal (Pa), equal to one newton per square metre (N·m or kg·m·s). This special name for the unit was added in 1971; before that, pressure in SI was expressed in units such as N·m. When indicated, the zero reference is
MAB PA-15 pistol has a frame mounted safety, on the left side of the frame, and also internal magazine safety, which does not allow the gun to be fired with magazine removed. A long-barreled version, known as the PA-15 Target, was used by the French military as the PAP F-1. 7,65 Parabellum for Italian market. MAB PA-15 pistol The MAB PA-15 ("Pistolet Automatique 15", also known as the "P-15" or "P.15 Standard") was designed by the Manufacture d'armes de Bayonne. The model number, 15, refers to the magazine capacity. When introduced, this was the first pistol holding a greater number of rounds than