The microprocessor-controlled pressure transmitters are suitable for recording over, under or differential pressure in non-aggressive gases. They are used in heating, ventilation or air conditioning applications as well as in clean room technology or fine draft measurement. The pressure is measured using a piezoresistive pressure sensor. The material of the wetted parts is Ni, PU, Al, Au, Pyrex glass, silicone, Kovar, Duraplast, Ultem Plastic. The time constant can be switched between approx. 10ms, 2s or 4s.