The instrument is based on an electronic module which interprets the analogue signals from th eintegrated pressure sensors. these signals may be displayed seperately. It is the electronic module's main task to compute the pressure difference wich can be displayed and processed. The interpretation allows to set two independant switching points and provides an electrical output signal proportional to the differential pressure. The integrated pressure transmitters are based on a ceramic measuring system. The digitized signals are processed to the electronic module.

The pressure ratings of the pressure sensors and the measuring range of the instrument are factory calibrated and marked accordingly on the product identification label.