Siemens Industry, Inc.

Siemens Aktiengesellschaft

Ray Dean Shepherd

Glen Eugene Schmidt

Michel J Baillargeon

Gregory J Golden

Aosheng Wang

Christoph Klawun

Robert Farmer

Bob Farmer

Thomas Burghardt

A gas chromatograph in which components of a sample of a gas mixture are separated via a separation column, a sensing element of a thermal conductivity detector is operated at a first temperature to detect separated components and to generate a detector signal in response to detected components, an evaluation unit evaluates detector signals and determines concentrations of detected components, a further sensing element of a further thermal conductivity detector is operated at a second temperature different from the first temperature, to detect gas components of widely different concentration ranges at high sensitivity, where the thermal conductivity detectors are calibrated for different concentration ranges, and the evaluation unit compares the detector signal with the detector signal of the further thermal conductivity detector to output a concentration value determined from the signal of the thermal conductivity detector calibrated for the measured component concentration.

Gas chromatograph

The present invention is a novel device, system, and method for data transport and bus architecture. According to an exemplary embodiment of the present invention, the bus architecture may comprise of a continuous serial bus that may be incorporated into a process control sample system to provide an intrinsically safe and efficient system. An alternative exemplary embodiment, in an intrinsically safe control sampling system, a data transport device may be used to couple sampling controls and analyzers. An exemplary embodiment of the present invention may contain an access controller providing a protocol bridge for an intrinsically safe control sampling system to couple sampling controls and analyzers.

Data transport architecture

A system and method for providing a serial communication bus is disclosed. A serial communication bus connects multiple footprint devices, such as electronic sensors in a process control sample system. The footprint devices can utilize various footprint device specific communication protocols. Multiple tophat devices act as general I/O ports for connecting with the footprint devices. Each tophat device identifies the footprint device specific communication protocol of a connected footprint device, converts outputs signals transmitted from the connected footprint device from the footprint device specific communication protocol of the footprint device to a standard bus communication protocol, and converts input signals directed to the connected footprint device from the standard bus communication protocol to the footprint device specific communication protocol of the footprint device. The serial communication bus connects the tophat devices and transmits input and output signals using the standard bus communication protocol.

Method and apparatus for serial bus communication

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Tulsa, OK, United States of America

Ray Dean Shepherd