Rosemount Inc.

Daimlerchrysler Aerospace Ag

Rosemont Inc.

Brian E Richter

Gregory C Brown

Kurt C Diede

Stefan Cramer

Rolf Gluth

Thomas Schake

A piston position in a cylinder of a hydraulic assembly is measured using microwave pulses. The microwave pulses are launched along a conductor coupled to the piston or cylinder. A sliding member is slidably coupled to the conductor and moves with the piston or cylinder. Position is determined as a function of a reflection from the end of the conductor and the sliding member.

Hydraulic piston position sensor

Disclosed is a low power time domain reflectometry radar (LPTDRR) level transmitter for calculating levels of first and second products in a tank. A termination extends into the first and second products in the tank. A pulse generator transmits a pulse along the termination into the first and second products. A pulse receiver receives first and second reflected wave pulses corresponding to reflection of a first portion of the transmit pulse at a first product interface and reflection of a second portion of the transmit pulse at a second product interface, respectively. A threshold controller generates a first threshold for detection of the first reflected wave pulse and a second threshold for detection of the second reflected wave pulse. A dielectric constant calculator determines a dielectric constant of the first product as a function of the first reflected wave pulse. A level computer calculates levels of the first and second products.

Multiple process product interface detection for a low power radar level transmitter

A FMCW radar tank level gauge (14) that measures a level (13) in a tank (10) by obtaining a set of phase shift data points of mixed transmitted waves and received waves. The set of spectral data phase shift values has a received target marker indicating the level. An adaptive set of masking threshold phase shift values corresponding to at least a portion of the spectral data phase shift values are calculated. The adaptive set of masking threshold values are compared with the corresponding spectral data values to identify at least one spectral data value associated with the level. The level of the tank is calculated from at least one spectral data value and the level of the tank is reported.

Radar level gauge

Growing community of inventors

Bloomington, MN, United States of America

Brian E Richter