Patent application number | Description | Published |
20080297177 | Method for servicing an apparatus for capacitive ascertaining and/or monitoring of a process variable - The invention relates to a method for servicing, especially checking, an apparatus for capacitive ascertaining and/or monitoring at least one process variable of a medium, wherein the apparatus has at least one probe unit ( | 12-04-2008 |
20090211356 | Apparatus for Capacitive Ascertaining and/or Monitoring of Fill Level - An apparatus for capacitive ascertaining and/or monitoring of the fill level of a medium in a container. The apparatus includes at least one probe unit, which is electrically insulated relative to the medium, and at least one electronics unit, which supplies the probe unit with at least one electrical, actuating signal, receives an electrical measurement signal from the probe unit, and evaluates the measurement signal as regards the fill level The actuating signal is an electrical alternating voltage signal. The electronics unit is embodied in such a manner that it supplies the probe unit with the actuating signal in a measuring phase, and supplies the probe unit with a test signal in a test phase, and that it receives a test measurement signal in the test phase from the probe unit, wherein the test signal is selected in such a manner that it has at least one section with an essentially constant voltage value. | 08-27-2009 |
20090284269 | Apparatus for ascertaining and/or monitoring a process variable - The invention relates to an apparatus for ascertaining and/or monitoring a process variable. The apparatus includes a sensor element ( | 11-19-2009 |
20100005880 | Apparatus for determining and/or monitoring a process variable - An apparatus for determining and/or monitoring a process variable of a medium in a container. including: a probe unit, which has a sensor electrode and a guard electrode; and an electronics unit, which supplies the sensor electrode with an activating signal and which supplies the guard electrode with a guard signal; An amplifying unit; and a limiting element arranged in series between the guard electrode and the output of the amplifying unit. The amplifying unit supplies via the limiting element the guard electrode with the guard signal; and the amplifying unit supplies via the limiting element the sensor electrode with the activating signal. The evaluating unit is provided, which determines and/or monitors the process variable based on an electrical current signal measurable at the sensor electrode, and the activating signal and/or the guard signal. | 01-14-2010 |
20100109649 | APPARATUS FOR DETERMINING AND/OR MONITORING A PROCESS VARIABLE - An apparatus for determining and/or monitoring at least one process variable. The apparatus includes: at least one energy input, via which the apparatus receives energy for operation of the apparatus. The invention includes features that: at least one measuring unit is provided, which measures energy applied to the energy input; and at least one control unit is provided, which, based on comparison of the measured energy with a desired value of the energy requirement, controls at least one unit of the apparatus. | 05-06-2010 |
20100132454 | APPARATUS FOR DETERMINING AND/OR MONITORING AT LEAST ONE PROCESS VARIABLE - An apparatus for determining and/or monitoring at least one process variable. The apparatus includes at least one, first electronics unit, at least one, second electronics unit, and at least one transferring unit. The transferring unit is arranged between the first electronics unit and the second electronics unit, and the transferring unit is embodied in such a manner, that it transmits electrical energy and data between the first electronics unit and the second electronics unit. | 06-03-2010 |
20100141285 | APPARATUS FOR DETERMINING AND/OR MONITORING A PROCESS VARIABLE - The invention relates to an apparatus for determining and/or monitoring at least one process variable of a medium ( | 06-10-2010 |
20100194383 | APPARATUS FOR DETERMINING AND/OR MONITORING A PROCESS VARIABLE - An apparatus for determining and/or monitoring at least one process variable of a medium. The apparatus includes: at least one probe unit; and at least one electronics unit, which supplies the probe unit with an operating signal and which receives from the probe unit a received signal. The probe unit includes at least one probe electrode and at least one guard electrode; and the probe electrode and the guard electrode are surrounded, at least partially, by at least one insulating unit. The the insulating unit has, in the region of the guard electrode, a smaller thickness than in the region of the probe electrode. | 08-05-2010 |
20110035576 | Configurable field device for use in process automation systems - A configurable field device for automation technology with a partially dynamically reconfigurable logic chip FPGA, in which function modules are dynamically configured during runtime, and to a method for operating the configurable field device. | 02-10-2011 |
20110192017 | METHOD FOR MANUFACTURING A CAPACITIVE MEASURING APPARATUS - A method for manufacturing a measuring apparatus for capacitive determining and/or monitoring of at least the fill level of a medium. The measuring apparatus has a probe unit and an electronics unit. During a measurement, the electronics unit supplies the probe unit with an exciter signal and receives from the probe unit a received signal, from which the electronics unit ascertains a capacitance value. The probe unit is coated with an insulation layer, the coated probe unit is connected with the electronics unit and inserted into a container containing a calibration medium, the coated probe unit is covered completely by the calibration medium and an associated received signal is gained, and, with the associated received signal, at least one adjustable component of the electronics unit is set. | 08-11-2011 |
20110276281 | APPARATUS FOR DETERMINING AND/OR MONITORING A PROCESS VARIABLE OF A MEDIUM - An apparatus for determining and/or monitoring at least one process variable of a medium. The apparatus includes: at least one evaluation unit, which monitors and/or signals an exceeding and/or subceeding of a predeterminable limit value of the process variable by the medium; and at least one memory unit, in which limit values of the process variable associated with at least one property of the medium are stored; and wherein the evaluation unit, based on information concerning the property of the medium, applies from the memory unit, for determining and/or monitoring the process variable, a stored limit value associated with the property of the medium. | 11-10-2011 |
20130241530 | Measuring Device for Determining and/or Monitoring at Least One Process Variable - A measuring device for determining and/or monitoring at least one process variable, comprising: a sensor unit; a first electronics unit which has a first microcontroller, and a second electronics unit which has a second microcontroller, and which is connected with the first electronics unit via a galvanically isolated transmission unit for energy- and data transmission. The first microcontroller produces at least one signal, which can vary in at least one characteristic, and supplies the signal to the transmission unit, that the signal controls the energy- and data transmission, that the first microcontroller and/or the second microcontroller determines at least one current operating parameter, and that the first microcontroller sets at least one characteristic of the signal as a function of the operating parameter. | 09-19-2013 |
20130298667 | Apparatus and Method for Capacitive Fill Level Measurement - The invention relates to an apparatus for capacitive determining and/or monitoring at least of fill level of a medium in a container, comprising a probe unit having at least one probe electrode, and an electronics unit, which supplies at least the probe electrode with an electrical, transmitted signal, and receives and evaluates an electrical, response signal from the probe unit. Besides relating to an apparatus, the invention also relates to a corresponding method. The invention is distinguished by features including that an electronics unit supplies the probe electrode at least at times by means of a frequency sweep with a transmitted signal, which has a plurality of discrete frequencies following one another within a predeterminable frequency band, that the electronics unit, based on the frequency sweep, ascertains a measuring frequency optimal for present application parameters, and that the electronics unit determines fill level from the response signal belonging to the optimal measuring frequency. | 11-14-2013 |
20140339919 | SYSTEM OF SERVICING DEVICE AND FIELD DEVICE AND METHOD FOR COMMUNICATION WITH A FIELD DEVICE - A system composed of a servicing device and a field device having at least one sensor unit for determining and/or monitoring at least one process variable. At least one electronics unit, which has an evaluation unit, wherein the evaluation unit receives measurement signals from the sensor unit and evaluates such with reference to the process variable, and at least one switch element actuatable contactlessly from outside of the field device. The servicing device is embodied to modulate the switch state of the switch element for transmission of field device specific data to the electronics unit. Furthermore, a field device, a servicing device and a method for communication between field device and servicing device are claimed. | 11-20-2014 |