FLUCTUATION AND PHASE-BASED METHOD FOR DETECTION OF PLUGGED IMPULSE LINES
First Claim
1. A method comprising:
- obtaining first and second sets of process variable (PV) measurements generated using a sensor, the sensor fluidly coupled to first and second impulse lines;
identifying fluctuations in the first and second sets of PV measurements;
identifying a phase difference between the first set of PV measurements and the second set of PV measurements; and
determining whether one or more of the impulse lines are plugged using the fluctuations and the phase difference.
2 Assignments
0 Petitions
Accused Products
Abstract
A method includes obtaining first and second sets of process variable (PV) measurements generated using a sensor, where the sensor is fluidly coupled to first and second impulse lines. The method also includes identifying fluctuations in the first and second sets of PV measurements. The method further includes identifying a phase difference between the first set of PV measurements and the second set of PV measurements. In addition, the method includes determining whether one or more of the impulse lines are plugged using the fluctuations and the phase difference. Both impulse lines may be plugged when the fluctuations in both sets of PV measurements are at or near zero. Only the first impulse line may be plugged when the fluctuation in the first set of PV measurements is at or near zero. Only the second impulse line may be plugged when the phase difference is at or near zero.
12 Citations
20 Claims
-
1. A method comprising:
-
obtaining first and second sets of process variable (PV) measurements generated using a sensor, the sensor fluidly coupled to first and second impulse lines; identifying fluctuations in the first and second sets of PV measurements; identifying a phase difference between the first set of PV measurements and the second set of PV measurements; and determining whether one or more of the impulse lines are plugged using the fluctuations and the phase difference. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. An apparatus comprising:
-
at least one memory configured to store first and second sets of process variable (PV) measurements generated using a sensor; and at least one processing device configured to; identify fluctuations in the first and second sets of PV measurements; identify a phase difference between the first set of PV measurements and the second set of PV measurements; and determine whether one or more of first and second impulse lines fluidly coupled to the sensor are plugged using the fluctuations and the phase difference. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
-
-
17. A non-transitory computer readable medium embodying a computer program, the computer program comprising computer readable program code for:
-
obtaining first and second sets of process variable (PV) measurements generated using a sensor; identifying fluctuations in the first and second sets of PV measurements; identifying a phase difference between the first set of PV measurements and the second set of PV measurements; and determining whether one or more of first and second impulse lines fluidly coupled to the sensor are plugged using the fluctuations and the phase difference. - View Dependent Claims (18, 19, 20)
-
Specification