The transmitter DE15 serves to record the filling level or the content of upright or flat cylindrical tanks for industrial gases. The corresponding differential pressure of the filling level is measured. An additional integrated pressure sensor records the operating pressure of the system independent of this. The application scope comprises filling level equipment on closed tanks, in particular in the cryogenics field. The measuring system comprises two pressure chambers that are separated by a diaphragm. Differential pressure in one of the chambers leads to a proportional displacement of the diaphragms. This movement is transferred to an inductive displacement transducer and is converted into a 4…20 mA output signal by the downstream electronics. There is a ceramic sensor with a DMS bridge installed in the (-) side of the device. The current pressure changes the form of the ceramic membrane and leads to a proportional change of resistance in the DMS bridge. This change of resistance is converted into a 4…20 mA output signal by the downstream electronics.
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