Abb Technology Ag

Abb Ag

Harald U Müller

Yannick Maret

Ralf Huck

Karl Ehinger

Klaus-Jürgen Zeiger

The disclosure relates to a field device of a process automation system, having at least one first intrinsically safe power supply unit, which provides locally stored electrical energy in an integrated storage element for supplying power to an electronics unit for process control. To supply power to intrinsically safe field devices from locally stored electrical energy in line with demand, it is proposed that in addition, at least one additional intrinsically safe power supply unit is integrated therein, which is fed by a power generation unit providing locally renewable electrical energy.

Field device for a process automation system having an intrinsically safe power supply device

The disclosure relates to a thermometer having an exchangeable measurement insert for measuring process temperatures of liquid or gaseous media in vessels of process installations, and to a method for replacing the measurement insert. On the basis of a thermometer in which the measurement insert is accommodated, such that it can be changed, in a protective tube which is closed at one end and has a process flange, the closed end of the protective tube being immersed, as far as the process flange, in a container in which the medium whose temperature is to be determined is situated, and the open end of the protective tube being guided at least indirectly to a connection housing in which at least connection terminals for connecting the measurement insert to a remote measured value processing system are arranged, provision is made for the transition from the open end of the protective tube to the connection housing to have a clearance fit with a cylindrical fitting surface between the measurement insert and a fitting sleeve which at least partially surrounds the latter.

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Fulda, Germany

Harald U Müller