# US 2014/0360263 A1 · Multi-limit level measuring device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0360263 A1 - Document ID: US20140360263A1 - Status: Published application - Kind: A1 - Application number: 14/295,612 - Filed: 2014-06-04 - Published: 2014-12-11 - Earliest claimed: 2013-06-06 - Assignees: VEGA Grieshaber KG - Applicants: VEGA Grieshaber KG - Inventors: Josef FEHRENBACH; Thomas DECK; Martin MELLERT - Web page: https://patentgrep.com/patent/US20140360263A1 ## CPC - G01F 23/296: Acoustic waves - G01F 23/0007: {for discrete indicating and measuring (G01F23/02 - G01F23/28 take precedence)} - G01F 23/2967: {for discrete levels} - G01F 23/2968: {Transducers specially adapted for acoustic level indicators} - G01F 23/80: Arrangements for signal processing - G01F 23/804: {containing circuits handling parameters other than liquid level} - G01L 9/0052: {of piezoresistive elements (circuits therefor G01L9/06)} - G01L 9/0072: {using variations in capacitance} - G01F: MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME - G01L: MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE (weighing G01G) ## Abstract To detect a limit level, a multi-limit level measuring device is employed, which uses two different measured data evaluation methods. The measured data to be evaluated is acquired by a multi-limit level sensor arrangement which can use different physical measurement principles. In this manner, the likelihood of the limit level being erroneously detected may be reduced. ## Claims ### Claim 1 A multi-limit level measuring device for determining a limit level, using at least two different measured data evaluation methods, wherein each of the two measured data evaluation methods is configured to detect the limit level, the multi-limit level measuring device comprising: a multi-limit level sensor arrangement acquiring measured data; and an evaluation unit evaluating at least a first subset of the acquired measured data in order to detect the limit level, using a first measured data evaluation method of the methods, the evaluation unit evaluating at least a second subset of the acquired measured data in order to detect the limit level, using a second measured data evaluation method of the methods, the first method being different from the second method. ### Claim 2 (depends on 1) The multi-limit level measuring device according to claim 1, further comprising: a housing having an end region configured for immersion into a filling medium, to determine the limit level, wherein this end region of the housing has a single cross-sectional area and thus does not extend in a forked manner. ### Claim 3 (depends on 2) The multi-limit level measuring device according to claim 2, wherein at least the end region of the housing consists of metal. ### Claim 4 (depends on 2) The multi-limit level measuring device according to claim 2, wherein at least the end region of the housing consists of an electrically non-conductive material. ### Claim 5 (depends on 2) The multi-limit level measuring device according to claim 2, wherein at least the end region of the housing consists of metal and an electrically non-conductive material. ### Claim 6 (depends on 2) The multi-limit level measuring device according to claim 2, further comprising: a vibration actuator attached to an inside of the end region of the housing, to transmit vibrations onto the end region of the housing. ### Claim 7 (depends on 6) The multi-limit level measuring device according to claim 6, further comprising: a diaphragm fitted in the end region of the housing and configured to pick up the vibrations from the vibration actuator. ### Claim 8 (depends on 1) The multi-limit level measuring device according to claim 1, further comprising: a strain gauge picking up the first subset of the measured data. ### Claim 9 (depends on 1) The multi-limit level measuring device according to claim 1, further comprising: a vibration sensor picking up the second subset of the measured data. ### Claim 10 (depends on 1) The multi-limit level measuring device according to claim 1, further comprising: a sensor picking up one of the first and second subsets of the acquired measured data, the sensor including one of a radar sensor, a capacitive sensor, an impedance sensor, an optical sensor, a temperature sensor and a conductivity sensor. ### Claim 11 An evaluation unit for detecting a limit level, using at least two different measured data evaluation methods, wherein each of the two measured data evaluation methods is configured to detect the limit level, wherein the evaluation unit is configured to evaluate at least a first subset of acquired measured data in order to detect the limit level, using a first measured data evaluation method, and is configured to evaluate at least a second subset of the acquired measured data in order to detect the limit level, using a second, different measured data evaluation method. ### Claim 12 A method for detecting a limit level, using at least two different measured data evaluation methods, comprising the steps: obtaining measured data by a multi-limit level sensor arrangement; evaluating at least a first subset of the acquired measured data in order to detect the limit level, using a first measured data evaluation method of the methods; and evaluating at least a second subset of the acquired measured data in order to detect the limit level, using a second measured data evaluation method of the methods; wherein the first method is different than the second method. ### Claim 13 (depends on 12) A program element which, when executed on a processor of a multi-limit level measuring device, instructs the multi-limit level measuring device to carry out the method steps according to claim 12. ### Claim 14 (depends on 12) A computer-readable medium on which a program element is stored which, when executed on a processor of a multi-limit level measuring device, instructs the multi-limit level measuring device to carry out the method steps according to claim 12.