The model DPGT40 differential pressure transmitter from WIKA is a differential pressure gauge with integrated working pressure indication and output signal. As soon as a signal transmission is required and, at the same time, a differential pressure should be readable on site, the DELTA-trans of the DELTA-line product family is used. In addition to the differential pressure, the DELTA-trans differential pressure transmitter with output signal can also display the working pressure with the aid of the integrated working pressure indication.