Patents Assigned to Rosemount Measurement Limited
  • Vibrating element apparatus
    Patent number: 11585681
    Abstract: The invention provides a method of driving a vibrating sensor in which the drive signal is combined with an amplitude modulated high frequency carrier. The signal is demodulated at a position adjacent to the component to be driven. This method may be applied to reducing cross-talk between drive and pick-up wire pairs and also to passing both drive and pickup signals, and two drive signals, down the same wire pair.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: February 21, 2023
    Assignee: Rosemount Measurement Limited
    Inventors: George Alexander MacDonald, Jonathan James Goff
  • Detector and methods of detecting
    Patent number: 11162864
    Abstract: An ultrasonic detector suitable for mounting in a position for surveying an area for a source of airborne ultrasound, which detector comprises a sensor for detecting an ultrasonic sound signal, characterised by a transducer configured to produce a broadband ultrasonic sound signal for reception by said sensor enabling said ultrasonic detector to perform a self-test.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: November 2, 2021
    Assignee: Rosemount Measurement Limited
    Inventor: Darren Michael Rose
  • Level switches
    Patent number: 10656005
    Abstract: The invention provides a level switch having a near field communications facility which allows at least some functions of the switch to be powered and the communication of data between the switch and a reader. Application and calibration information are examples of data that can be read to and from the switch, both in the factory and in the field.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: May 19, 2020
    Assignee: ROSEMOUNT MEASUREMENT LIMITED
    Inventors: Jeffery Allan Sears, Gregory Michael Leach
  • Level switches
    Patent number: 10571329
    Abstract: The invention describes a vibrating fork point level switch with multiple switching points.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: February 25, 2020
    Assignee: ROSEMOUNT MEASUREMENT LIMITED
    Inventors: Tadewos Tzegazeab, Rehan Azfar Ashraf, Gregory Michael Leach
  • VIBRATING FORK LEVEL SWITCHES
    Publication number: 20190186980
    Abstract: The invention provides a method for configuring for use a vibrating fork level switch having a dry fork frequency DFF. The method involves establishing a wet fork frequency WFF and combining this with the DFF to configure the switch for use in media of differing densities.
    Type: Application
    Filed: August 2, 2017
    Publication date: June 20, 2019
    Applicant: Rosemount Measurement Limited
    Inventors: Jeffery Allan SEARS, Jingdong ZHANG, Tadewos TZEGAZEAB, Kevin THOMAS
  • Detector and methods of detecting
    Patent number: 10082440
    Abstract: An ultrasonic detector suitable for mounting in a position for surveying an area for a source of airborne ultrasound, which detector comprises a sensor for detecting an ultrasonic sound signal, characterized by a transducer configured to produce a broadband ultrasonic sound signal for reception by said sensor enabling said ultrasonic detector to perform a self-test.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: September 25, 2018
    Assignee: ROSEMOUNT MEASUREMENT LIMITED
    Inventor: Darren Michael Rose
  • FIELD DEVICE FOR DETERMINING FLUID PROPERTIES COMPRISING A FLUID SENSOR, A TEMPERATURE SENSOR AND A PROCESSING FACILITY MOUNTED ON A FLUID VESSEL
    Publication number: 20180164252
    Abstract: The invention provides a field device configured to be fitted through a single mounting aperture in a vessel. The device preferably includes a vibrating fork and a temperature sensor, the signals from which are processed within the device to provide an output indicative of whether a property of a medium in contact with the device is above or below a threshold. This output may be communicated wirelessly to a remote location. Other features are described.
    Type: Application
    Filed: May 18, 2016
    Publication date: June 14, 2018
    Applicant: Rosemount Measurement Limited
    Inventors: Jeffery Allan Sears, Gregory Michael Leach, Marianne Elizabeth Williams, Rehan Azfar Ashraf
  • Detector and methods of detecting
    Patent number: 9869605
    Abstract: An ultrasonic detector suitable for mounting in a position for surveying an area for a source of airborne ultrasound, which detector comprises a sensor for detecting an ultrasonic sound signal, characterised by a transducer configured to produce a broadband ultrasonic sound signal for reception by said sensor enabling said ultrasonic detector to perform a self-test.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: January 16, 2018
    Assignee: Rosemount Measurement Limited
    Inventors: Darren Michael Rose, Roger Thomas Hurrey
  • Detector and methods of detecting
    Patent number: 9074963
    Abstract: An ultrasonic detector (10) suitable for mounting in a position for surveying an area for a source of airborne ultrasound, which detector comprises a sensor (20) for detecting an ultrasonic sound signal, characterized by a transducer (64) configured to produce a broadband ultrasonic sound signal for reception by said sensor (20) enabling said ultrasonic detector to perform a self-test.
    Type: Grant
    Filed: July 16, 2009
    Date of Patent: July 7, 2015
    Assignee: Rosemount Measurement Limited
    Inventor: Darren Michael Rose