The automatic ISOCHECK PROCESSOR, through an “L” or “S” Pitot tube with thermo-couple, allows speed and flow measurements in compliance with UNI EN ISO 16911-1 standard. It is equipped with independent sensors for pressure measurement (differential, static and barometrical) in order to meet the precision required as per point 5 in UNI EN ISO 16911-1 standards. If connected to one of the LIFETEK series sampler XP-R version it allows automatic isokinetic sampling in emission in accordance with UNI EN 13284-1 standards.