| ENDRESS + HAUSER CONDUCTA GESELLSCHAFT FÜR MESS- UND REGELTECHNIK MBH + CO. KG Patent applications |
| Patent application number | Title | Published |
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| 20110298478 | METHOD FOR DETERMINING RESIDUAL COUPLING OF AN INDUCTIVE CONDUCTIVITY SENSOR - A method for determining residual coupling of an inductive, conductivity sensor, in which the conductivity sensor is surrounded by a measured medium and an equivalent impedance of the medium is calibrated with a variable compensation impedance. The variable compensation impedance and the equivalent impedance of the medium act on a measuring coil of the conductivity sensor with a phase shift of 180°. In order to be able to perform a measuring of the residual coupling with a high accuracy of measurement at any time during operation of the conductivity sensor, the variable compensation impedance is varied until an output voltage of the measuring coil of the conductivity sensor assumes a minimum voltage; wherein the minimum voltage corresponds to the residual coupling of the inductive, conductivity sensor. | 12-08-2011 |
| 20110108739 | METHOD FOR THE OPTICAL DETERMINING OF A MEASURED VARIABLE OF A MEDIUM - In a method for determining a measured variable of a measured medium, wherein the measured medium is brought in contact with an indicator or an indicator mixture, whose absorption spectrum has a first, and a second, wavelength range, which essentially do not overlap, | 05-12-2011 |
| 20110083557 | Method and apparatus for removing chloride from samples containing volatile organic carbon - A method for removing chloride from samples containing volatile organic carbon, wherein a chloride containing sample is mixed with a difficultly volatile acid, wherein hydrochloric acid gas arises, which is present in dissolved form in a sample-acid mixture and then the hydrochloric acid gas is purged by a carrier gas from the sample-acid mixture, wherein the hydrochloric acid gas is removed from the carrier gas following the purging and the carrier gas is fed back to the sample-acid mixture. In order during the hydrochloric acid purging largely to suppress the driving out of easily volatile organic compounds, the sample-acid mixture has a temperature of approximately 3° C. to 30° C., wherein, following the purging from the sample-acid mixture, the hydrochloric acid gas is removed from the carrier gas by absorption with water. | 04-14-2011 |
| 20110033917 | SENSOR WITH LONG-TERM STABILITY FOR BIOPROCESSES - A sensor for registering a measured variable of a medium, especially in a bioprocess. The sensor includes a sensor body, wherein at least one surface section of the sensor body can be supplied with the medium, and wherein a condition of this surface section affects the measured value. The sensor is characterized by the fact that the surface section contains a substance with biocidal properties. | 02-10-2011 |
| 20110001490 | Conductivity sensor with switching between transmitting and recieving coil - An inductively working sensor for determining the conductivity of a liquid medium. The sensor includes: at least one transmitting circuit, which is designed to deliver an input signal for a transmitting coil, in order to produce in the transmitting coil an alternating electromagnetic field, which causes a ring-shaped electrical current in the liquid medium; at least one receiving circuit, which is designed to evaluate a received signal produced by the ring-shaped electrical current in a receiving coil; a first coil; a second coil, which is arranged at a distance from the first coil; a switching means for switching between a first switch state and a second switch state, wherein, in the first switch state, the first coil, serving as transmitting coil, is coupled with one of the transmitting circuits; and the second coil, serving as receiving coil, is coupled with one of the receiving circuits, and wherein, in the second switch state, the second coil, serving as transmitting coil, is coupled with one of the transmitting circuits, and the first coil, serving as receiving coil, is coupled with one of the receiving circuits. | 01-06-2011 |
| 20100109636 | Measuring apparatus and method for detecting moisture at a measurement voltage input of the measuring apparatus - A measuring apparatus having a measurement voltage input with at least one input contact for an input voltage of a measuring element and a method for detecting moisture on the measurement voltage input of such a measuring apparatus are provided, wherein the measuring apparatus includes a supplemental voltage source, which delivers at least one supplemental voltage and is connected with a supplemental contact arranged in the region of the at least one input contact. | 05-06-2010 |
| 20100059549 | APPARATUS AND METHOD FOR DOSING OF LIQUIDS IN GAS FILLED SPACES - An apparatus or dosing of liquids into a gas filled space comprising: a pump; a dosing orifice for introduction of liquid into the gas filled space; a discharge line, which connects a pressure side of the pump with the dosing orifice; and an elastic, liquid storer. The discharge line includes a shutoff valve between the pump and the dosing orifice, wherein the elastic, liquid storer is located between the pump and the shutoff valve, and the apparatus includes a first operating state, in which the pump runs in the case of closed shutoff valve, in order to store in the elastic, liquid storer a liquid amount under pressure. | 03-11-2010 |
