Patents by Inventor Douglas W. Arntson

Douglas W. Arntson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Two-wire process control loop current diagnostics
    Patent number: 9020768
    Abstract: A process variable transmitter controls a signal on a communication loop. A diagnostic component on the transmitter compares an expected signal level on the communication loop with an actual value to detect on-scale errors.
    Type: Grant
    Filed: August 16, 2011
    Date of Patent: April 28, 2015
    Assignee: Rosemount Inc.
    Inventors: Douglas W. Arntson, Jason H. Rud
  • Field device interface with network protection mechanism
    Patent number: 8390150
    Abstract: A field device interface module includes a connector, a plurality of terminals, a protocol interface module, a controller and a power supply module. The connector is configured to operably couple to a computer. The terminals are operably coupleable to a field device. The protocol interface module is coupled to the plurality of terminals and configured to generate signals in accordance with a process communication protocol. A power supply module is coupled to the plurality of terminals. The controller is coupled to the protocol interface module and to the power supply module and is configured to measure a voltage across the plurality of terminals and selectively cause the power supply module to provide power to the field device.
    Type: Grant
    Filed: July 14, 2009
    Date of Patent: March 5, 2013
    Assignee: Fisher-Rosemount Systems, Inc.
    Inventors: Daniel E. Vande Vusse, Alden C. Russell, III, Douglas W. Arntson
  • TWO-WIRE PROCESS CONTROL LOOP CURRENT DIAGNOSTICS
    Publication number: 20130046490
    Abstract: A process variable transmitter controls a signal on a communication loop. A diagnostic component on the transmitter compares an expected signal level on the communication loop with an actual value to detect on-scale errors.
    Type: Application
    Filed: August 16, 2011
    Publication date: February 21, 2013
    Inventors: Douglas W. Arntson, Jason H. Rud
  • Industrial process control transmitter with multiple sensors
    Patent number: 8311778
    Abstract: An industrial process control transmitter includes a first input configured to couple to a first sensor, and a second input configured to couple to a second sensor. Measurement circuitry is configured to couple to the first and second sensors and provide an output related to a sensed process variable. A multiplexer is configured to selectively couple the first and second sensors to the measurement circuitry. An equalizer circuit is coupled to the first and second sensors and configured to equalize a voltage potential between the first sensor and the measurement circuitry.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: November 13, 2012
    Assignee: Rosemount Inc.
    Inventors: Andrew J. Bronczyk, Charles E. Goetzinger, Jason H. Rud, Clarence E. Holmstadt, Douglas W. Arntson
  • INDUSTRIAL PROCESS CONTROL TRANSMITTER WITH MULTIPLE SENSORS
    Publication number: 20110071794
    Abstract: An industrial process control transmitter includes a first input configured to couple to a first sensor, and a second input configured to couple to a second sensor. Measurement circuitry is configured to couple to the first and second sensors and provide an output related to a sensed process variable. A multiplexer is configured to selectively couple the first and second sensors to the measurement circuitry. An equalizer circuit is coupled to the first and second sensors and configured to equalize a voltage potential between the first sensor and the measurement circuitry.
    Type: Application
    Filed: May 25, 2010
    Publication date: March 24, 2011
    Inventors: Andrew J. Bronczyk, Charles E. Goetzinger, Jason H. Rud, Clarence E. Holmstadt, Douglas W. Arntson
  • FIELD DEVICE INTERFACE WITH NETWORK PROTECTION MECHANISM
    Publication number: 20100013325
    Abstract: A field device interface module includes a connector, a plurality of terminals, a protocol interface module, a controller and a power supply module. The connector is configured to operably couple to a computer. The terminals are operably coupleable to a field device. The protocol interface module is coupled to the plurality of terminals and configured to generate signals in accordance with a process communication protocol. A power supply module is coupled to the plurality of terminals. The controller is coupled to the protocol interface module and to the power supply module and is configured to measure a voltage across the plurality of terminals and selectively cause the power supply module to provide power to the field device.
    Type: Application
    Filed: July 14, 2009
    Publication date: January 21, 2010
    Inventors: Daniel E. Vande Vusse, Alden C. Russell, III, Douglas W. Arntson
  • Process control loop signal converter
    Patent number: 7016741
    Abstract: A device for use in a process control system includes a first pair of electrical connections configured to couple to a two-wire process control loop. The loop includes a two-wire process variable transmitter. A second pair of electrical connections is configured to couple to an input channel of a process device having multiple input channels. An electrical component is connected in series in the loop for use in digital communication with the two-wire process variable transmitter.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: March 21, 2006
    Assignee: Rosemount Inc.
    Inventor: Douglas W. Arntson