US 12,292,726 B2
Level sensor for continuous level detection and integration into process control system
Kurtis K. Jensen, Marshalltown, IA (US); Andrew M. Prusha, Marshalltown, IA (US); and Joseph F. DeMonte, Marshalltown, IA (US)
Assigned to FISHER CONTROLS INTERNATIONAL LLC, Marshalltown, IA (US)
Filed by FISHER CONTROLS INTERNATIONAL LLC, Marshalltown, IA (US)
Filed on Oct. 20, 2023, as Appl. No. 18/382,376.
Application 18/382,376 is a division of application No. 17/208,398, filed on Mar. 22, 2021, granted, now 11,809,157, issued on Nov. 7, 2023.
Prior Publication US 2024/0045397 A1, Feb. 8, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G01F 23/36 (2006.01); G01F 23/68 (2006.01); G05B 19/406 (2006.01)
CPC G05B 19/406 (2013.01) [G01F 23/363 (2013.01); G01F 23/68 (2013.01); G05B 2219/41301 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A level sensing system configured for implementation in a process control environment, the level sensing system comprising:
a level detection component configured to rise or fall in response to changes in a level of liquid in which the level detection component is placed;
a linking member that is mechanically linked to the level detection component such that the linking member changes position or orientation in response to the rise or fall of the level detection component;
one or more sensors configured for continuous detection of the level of liquid by way of: (i) continuously measuring the position or orientation of the linking member, and (ii) generating a detected level value corresponding to the continuously measured position or orientation of the linking member;
a circuit communicatively coupled to the one or more sensors and configured to: (i) generate an electromagnetic signal, according to a process control communication standard, to carry the detected level value; and (ii) transmit the electromagnetic signal to a process controller to enable the process controller to implement control in light of the detected level value; and
a spring configured to exert a force on the linking member.