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Robert Lalla: Measuring assembly. Endress &plus Hauser &plus Co, Bose McKinney & Evans, July 30, 2002: US06427129 (12 worldwide citation)

The measuring assembly comprises a sensor module containing at least one sensor and an analog/digital converter for digitizing the analog measurement signal furnished by the sensor as well as an analyzer module with means for digitally processing the digitized measurement data furnished by the senso ...


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Robert Lalla, Roland Muller, Bernd Strutt: Level measuring device operating with microwave. Endress Hauser Co, Bose McKinney & Evans, July 11, 2000: US06087978 (11 worldwide citation)

A level measuring device suitable for highly accurate measurements. A transmission pulse generator generates microwave pulses at a transmission repetition rate and transmits them through an antenna towards a material whose level is to be measured. Echo signal from the surface of the material are rec ...


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Robert Lalla, Roland Muller, Michael Sinz: Radar-based method of measuring the level of a material in a vessel. Endress Hauser Co, Bose McKinney & Evans, April 25, 2000: US06054946 (9 worldwide citation)

For measuring the level of a material in a vessel by a radar-based method an antenna arranged above the highest level anticipated radiates electromagnetic waves to the surface of the material contained in the vessel and receives reflected echo waves. The transit time of the wanted echo waves reflect ...


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Ronald Schreiber, Robert Lalla: Method and device for discrete-time reactance measurement. Endress &plus Hauser &plus Co, Bose McKinney & Evans, October 9, 2001: US06300776 (6 worldwide citation)

For discrete-time reactance measurement the reactance is activated by a clocked generator device with an electric voltage, an electric current or an electric charge. A clocked analyzer device generates an output signal as a function of the reactance to be measured from discrete-time sampling values ...


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Robert Lalla: Field device electronics fed by an external electrical energy supply. Endrss Hauser Flowtec, Bacon & Thomas PLLC, April 3, 2007: US07200503 (6 worldwide citation)

An electric current controller for field-device electronics controls and/or modulates the supply current. The supply current is driven by a supply voltage provided by an external energy supply. The field-device electronics has an internal operating and evaluating circuit for controlling the field de ...


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Robert Lalla, Ronald Schreiber: Assembly for signal transfer between a receiving station and a transmitting station as well as for power supply of the transmitting station. Bose McKinney & Evans, March 9, 2004: US06703943 (4 worldwide citation)

In an assembly for signal transfer between a receiving station and a transmitting station and for power supply of the transmitting station where these two stations are connected via a two-wire line, an analog signal current variable between two limiting values is transmitted via this two-wire line, ...


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Robert Lalla: Circuit configuration for a capacitive sensor. Endress Hauser Co KG, Bacon & Thomas, September 6, 2005: US06940292 (4 worldwide citation)

The circuit configuration includes a measuring capacitor having a variable capacitance, which is set by means of a physical measured quantity to be detected, a reference capacitor and a buffer amplifier. An input of the buffer amplifier is at least temporarily coupled to the measuring capacitor such ...


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Robert Lalla: Field device electronics fed by an external electrical energy supply. Endress Hauser Flowtec, Bacon & Thomas PLLC, November 30, 2010: US07844410 (3 worldwide citation)

The field-device electronics includes an electric current adjuster, through which a supply current flows, driven by a supply voltage provided by the external energy supply and adjusted by the current adjuster. Additionally, the field-device electronics includes an internal operating and evaluating c ...


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Jiri Karbula, Robert Lalla, Gernot Engstler: Measuring arrangement for registering chemical and/or physical, measured variables, as well as measuring device therefor. Endress Hauser Flowtec, Bacon & Thomas PLLC, September 7, 2010: US07792646 (3 worldwide citation)

A measuring arrangement of the invention includes: At least one measuring device, which generates, repeatedly during operation, measured values, especially digital, measured values, representing the at least one measured variable to be registered; as well as an electronic data processing system supe ...