[12] Patent
[11] Patent No.:GC0011531  
[45] Date of Publishing the Grant of the Patent: 31/Dec /2020                77/2020  
Number of the Decision to Grant the Patent:2020/176289
Date of the Decision to Grant the Patent:09/Dec/2020

[21] Application No.:GC 2017-34131

[22] Filing Date:17/10/2017

[30] Priority:

[33] State [32] Priority date [31] Priority No.
US
20/10/2016
15/298,717

[72] Inventors:1- Kenneth JunkŲŒ2- Shannon Jelken

[73] Owner: Fisher Controls International LLC, 205 South Center St., Marshalltown, USA

[74] Agent: Abu-Gazaleh Intellectual Property L.L.C

  

 

  

[51]IPC:
Int. Cl.: F15B11/02, 13/04, 19/00, 20/00; F16K37/00 (2006.01)

[56] Cited Documents:

-EP 2 463 562 A1 (FISHER CONTROLS INT [US])13 June 2012
-EP 2 321 563 B1 (NORGREN LTD C A [GB];THOMPSON VALVES LTD [GB] )27 June 2012
-WO 2014/197422 A1(TESCOM CORP [US])11 December 2014
 
Examiner: Eng. Fahad M. AlBaker

[54] METHODS AND APPARATUS OF STABILIZING A VALVE POSITIONER WHEN TESTING A SOLENOID VALVE
[57] Abstract: METHODS AND APPARATUS OF STABILIZING A VALVE POSITIONER WHEN TESTING A SOLENOID VALVEMethods and apparatus of stabilizing a valve positioner when testing a solenoid valve are disclosed. An example apparatus includes a solenoid valve and a valve positioner fluidly and communicatively coupled to the solenoid valve. The valve positioner is to be set in a pressure control state prior to conducting a test of the solenoid valve. The valve positioner is to detect a pressure change across the solenoid valve caused by the solenoid valve transitioning from a first state to a second state and transition the valve positioner from the pressure control state to a saturated state upon detecting the pressure change. The full supply pressure is to stabilize the valve positioner to conduct the test of the solenoid valve. The valve positioner is to maintain the saturated state until the pressure across the solenoid valve returns to the predetermined initial value.
No. of claims: 18     No. of figures: 11


 

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