Sick | Stegmann Gmbh

Sick Ag

Michael Speidel

David Hopp

Mark Johnson

An ultrasonic measurement apparatus () for determining a fluid velocity of a fluid () flowing in a piping () is provided, the apparatus () having a measurement body () inserted into the piping () and thus forming a section of the piping (), the measurement body () comprising a flow channel () for the fluid () and a surrounding channel wall (), wherein at least one ultrasonic transducer (-) is mounted from the outside on the channel wall () so that an oscillating member of the transducer (-) couples onto a partial region (-) of the channel wall () and thus the partial region (-) acts as an oscillating membrane of the ultrasonic transducer (-). The ultrasonic transducer (-) is arranged within a bulge () of the channel wall () which protrudes into the flow channel ().

Ultrasonic measurement apparatus having transducers arranged within a bulge of the channel wall protruding into the flow channel

Measurement of the rotating angle of two objects rotating in relation to each other is achieved with a transmitter assigned to one of the objects. The transmitter emits light that is either polarized or becomes polarized by means of a polarization filter, and with a polarization-sensitive polarizer such that the transmitter and the polarizer rotate relative to each other as dependent on the rotating angle. A receiver measures the luminosity of light passing through the polarizer in order to create a signal that is dependent on the rotating angle, and where the receiver has at least two receiver elements which detect light of differing polarization.

Device and process for measuring the angle of rotation of two objects rotating in relation to each other

The disclosure conveys a device for measuring the rotating angle of two objects which rotate relative to each other around a rotating axis, with one transmitter, which is assigned to one of the objects and which emits light that is polarized, and with a polarization-sensitive polarizer, such that the transmitter and the polarizer rotate relative to each other, and such that the polarizer has a polarizing area and a non-polarizing area, where the non-polarizing area is positioned eccentric to the rotating axis, and such that the device has a first receptor and a second receptor which measure a portion of the luminosity passing through the polarizer producing signals that are dependent on the rotating angle, and where the first receptor has a first reception area, and the second receptor has a second reception area which is distinct from the first reception area.

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Freiburg, Germany

Michael Speidel