The sensitivity of Piezoelectric Pressure Transducers is a main criterion and must be checked in regular intervals. Technical Standards (e.g. in NATO) demand calibration after defined numbers of measurements.These recalibrations can either be carried out by returning the transducer to the manufacturer or at the users premises. For user application HPI has developed a fast and cost - effective yet accurate and automatic (software controlled) device. This desk top device consists of a B630 Pressure Generator, B630 CU Control Unit, a reference transducer, a Notebook (or Desktop PC) and Software controlling the complete System incl. data recording and evaluation.