Siemens Aktiengesellschaft

Josef Richter

Franz Steinbacher

Piotr Strauch

Frank Probst

Hans-Günther Kleih

Ricardo Calvo

Andreas Sutter

Konstantin Harr

A flame ionization detector includes a burner to combust an oxygen-containing sample gas in a gas flame in the presence of air and while supplying a hydrogen-containing combustion gas. A measurement device measures an ion current from the gas flame to an electrode, and a temperature sensor measures a temperature of the gas flame. An evaluation device evaluates the measured ion current and compensates during evaluation of the measured ion current for a cross-sensitivity of the ion current to oxygen in the sample gas using the measured temperature of the gas flame.

Flame ionisation detector and method for the analysis of an oxygen-containing measuring gas

A gas chromatograph that includes a metering chamber, two separating devices and a multiport valve unit having switching functions for metering, straight separation, cutting and backflush, where the multiport valve unit is formed as a multiport diaphragm valve.

Gas chromatograph and multiport valve unit for a gas chromatograph

A measurement arrangement includes four electrically heated resistors which are arranged in gas paths and are connected to form a Wheatstone bridge, where each of two resistors which are diagonally opposite each other in the Wheatstone bridge are contained in a respective component arranged on a common heated carrier, each respective component is assigned to one heating resistor arranged near the component on the carrier, and where an unbalanced state of the Wheatstone bridge is compensated for by variably energizing the heating resistors.

Measurement arrangement having electrically heated resistors arranged in gas paths

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Karlsruhe, Germany

Josef Richter