Abstract: A field device for a process plant, may include a power distributing data switch having an electrical primary connection to consume power at a first power level higher than 10W, and at least two electrical secondary connections for combined data communication and power transfer at a second power level of lower than 10W per secondary connection. The field device may also include a housing to accommodate electrical components safe from dust and/or water, which forms a first housing compartment fitted for pressure proof enclosure of electrical components in an environment with explosive or flammable atmosphere and which accommodates the primary connection. The secondary connections may be arranged outside a pressure proof enclosure and outside the first housing compartment. The device may include a protective bridge to isolate leads out of the first housing compartment to connect the primary connection to the secondary connections.

Abstract: The application discloses a device for drawing a liquid from a process tank to be protected from contamination, including: a first receptacle for receiving the liquid withdrawn from the process tank; a first liquid line connecting the process tank with the first receptacle; and at least one first valve assembly disposed in the first liquid line and designed to block or release liquid transport through the first liquid line. The device includes at least one pressure sensor for detecting a pressure within the first receptacle. The device is designed such that a pressure difference between the first and the second ends of the first liquid line is greater than a predetermined minimum value when the first liquid line is connected with the process tank and the process tank is to be protected from contamination.

Abstract: The application discloses a device for drawing a liquid from a process tank to be protected from contamination, including: a first receptacle for receiving the liquid withdrawn from the process tank; a first liquid line connecting the process tank with the first receptacle; and at least one first valve assembly disposed in the first liquid line and designed to block or release liquid transport through the first liquid line. The device includes at least one pressure sensor for detecting a pressure within the first receptacle. The device is designed such that a pressure difference between the first and the second ends of the first liquid line is greater than a predetermined minimum value when the first liquid line is connected with the process tank and the process tank is to be protected from contamination.

Abstract: A method for determining a state of a measuring transducer integrated in a process container, wherein in the process container one or more processes are being performed, and the measuring transducer registers at least one physical or chemical process parameter within the process container, includes steps as follows: identifying a process currently being performed in the process container; and ascertaining a deviation value as measure of a deviation of a measured value progression registered by the measuring transducer during the process currently being performed in the process container from a measured value progression expected for the identified process, wherein the state of the measuring transducer and/or of the process is determined utilizing the ascertained deviation value.

Abstract: A device for drawing a liquid from a process tank, in particular, a process tank to be protected from contamination, comprising: a first receptacle for receiving the liquid withdrawn from the process tank. A first liquid line, connecting the process tank with the first receptacle and having a first end that can be connected with the process tank and a second end opening into the first receptacle; and at least one first valve assembly, which is arranged between the first and second ends of the first liquid line and is designed to block or release liquid transport through the first liquid line. The device has at least one pressure sensor, which is connected with the first receptacle, in particular, for detecting a pressure prevailing within the first receptacle and/or is arranged at the second end of the first liquid line.

Abstract: A method for determining a state of a measuring transducer integrated in a process container, wherein in the process container one or more processes are being performed, and the measuring transducer registers at least one physical or chemical process parameter within the process container, includes steps as follows: identifying a process currently being performed in the process container; and ascertaining a deviation value as measure of a deviation of a measured value progression registered by the measuring transducer during the process currently being performed in the process container from a measured value progression expected for the identified process, wherein the state of the measuring transducer and/or of the process is determined utilizing the ascertained deviation value.

Abstract: A method for adjusting a measuring device in process analysis technology, in which the measuring device is arranged remotely from a reference measuring device performing reference measurements, wherein measured values of the measuring device are compared to the reference measured values of the reference measuring device and from this comparison at least one calibration variable for the measuring device is derived. In order be able to perform the adjusting method very rapidly and without interrupting the working process of the measuring device, the measured values of the measuring device and the reference measured values of the reference measuring device are combined in a central data capture and processing software, the calibration value is ascertained by the central data capture and processing software and then the calibration variable is transmitted from the central data capture and processing software to the measuring device for adjusting the measured values.

Abstract: The invention relates to an assembly for accommodating a probe, especially a measuring probe or a sample-taking probe. The assembly includes a housing, which has a space for accommodating the probe and a first chamber for accommodating a first fluid, with the first chamber being in connection with the space for accommodating the probe or surrounding such. The housing further includes a connecting section, by means of which the housing is connectable with a container or is connected therewith. The container serves for accommodating a medium, a property of which is to be measured with the probe or from which a sample is to be taken. At least a second chamber is provided in the housing for accommodating a second fluid and is arranged between the first chamber and the connecting section of the housing.

Abstract: The sensor arrangement includes: a least two sample chambers; at least two potentiometric FET-sensors, especially ISFET-sensors or ChemFET-sensors, having, in each case, a sensitive surface section, wherein each sensitive surface section lies in flow connection with its one of the sample chambers; and a reference cell having a reference medium for providing a reference potential, wherein the sample chambers are connected with the reference medium via an electrolyte bridge. The reference cell has, preferably, a potentiometric reference-FET-sensor for providing a reference potential, which is registered against the pseudo-reference-potential of a redox electrode. The potentials Udiff1, Udiff2, . . .

Abstract: The sensor arrangement includes: a least two sample chambers; at least two potentiometric FET-sensors, especially ISFET-sensors or ChemFET-sensors, having, in each case, a sensitive surface section, wherein each sensitive surface section lies in flow connection with its one of the sample chambers; and a reference cell having a reference medium for providing a reference potential, wherein the sample chambers are connected with the reference medium via an electrolyte bridge. The reference cell has, preferably, a potentiometric reference-FET-sensor for providing a reference potential, which is registered against the pseudo-reference-potential of a redox electrode. The potentials Udiff1, Udiff2, . . .