Krohne Messtechnik Gmbh

Krohne Messtechnik Gmbh Co. Kg

Jürgen Lehmkuhl

Helmut Brockhaus

Wilhelm Florin

Uwe Wegemann

Andreas Poremba

Wolfgang Stelz

Jörg Kube

Peter Angerstein

Sebastian Schulze

A circuit arrangement () for monitoring the temperature of an electronic component (), which, in particular, can be impinged with an electric current and can be connected to at least one voltage source (). The circuit arrangement is able to guarantee safe monitoring of the temperature of an electronic component impinged with electric current by the electronic component () being part of at least one Wheatstone bridge () and by at least one switching device () being provided that influences the impingement of the electronic component () with electric current on the basis of a bridge transverse voltage of the Wheatstone bridge (). Additionally, circuit arrangement () is well suited for use in a calorimetric mass flowmeter ().

Circuit arrangement for monitoring temperature and calorimetric mass flowmeter

A power supply device for intrinsically safe power supply of an intrinsically safe load circuit includes a voltage source, a power-limiting circuit including at least two controllable semiconductor devices, a current-limiting circuit including at least one resistor, and a load circuit connector connected to the load circuit. The power-limiting circuit and the current-limiting circuit are active between the voltage source and the load circuit connector. The resistor includes a resistance value that suffices to limit a short circuit current to a current without danger of a spark ignition.

Power supply device

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Dinslaken, Germany

Jürgen Lehmkuhl