Process fluid pressure transmitter with pressure transient detection
First Claim
1. A process fluid pressure transmitter comprising:
- a process fluid pressure sensor having an electrical characteristic that varies with process fluid pressure, the pressure sensor being coupleable to a source of process fluid pressure;
measurement circuitry coupled to the process fluid pressure sensor, the measurement circuitry providing a signal indicative of the electrical characteristic of the process fluid pressure sensor at a sensor measurement rate;
a controller coupled to the measurement circuitry to receive the signal and calculate a process fluid pressure based upon the signal, the controller being configured to detect a process fluid pressure transient based upon the signal and store at least one parameter related to the process fluid pressure transient;
a loop communicator coupled to the controller, the loop communicator being configured to provide a transmitter output over a process communication loop based upon the process fluid pressure at a transmitter output rate that is lower than the sensor measurement rate;
wherein the process fluid pressure transmitter is configured to provide an indication related to the at least one stored parameter; and
wherein detection of the process fluid pressure transient includes comparison of the process fluid pressure to at least one user-provided threshold.
1 Assignment
0 Petitions
Accused Products
Abstract
A process fluid pressure transmitter includes a process fluid pressure sensor, measurement circuitry, a controller and a loop communicator. The pressure sensor is coupleable to a source of process fluid pressure. Measurement circuitry is coupled to the process fluid pressure sensor and provides a signal indicative of the electrical characteristic of the process fluid pressure sensor. The controller receives the signal from the measurement circuitry and calculates a process fluid pressure based at least in part upon the signal. The controller is also configured to detect a process fluid pressure transient and store at least one parameter related to the process fluid pressure transient. The loop communicator is coupled to the controller and is configured to provide a signal over a process communication loop based upon the process fluid pressure. The process fluid pressure transmitter is also configured to provide an indication related to the at least one stored parameter.
13 Citations
26 Claims
-
1. A process fluid pressure transmitter comprising:
-
a process fluid pressure sensor having an electrical characteristic that varies with process fluid pressure, the pressure sensor being coupleable to a source of process fluid pressure; measurement circuitry coupled to the process fluid pressure sensor, the measurement circuitry providing a signal indicative of the electrical characteristic of the process fluid pressure sensor at a sensor measurement rate; a controller coupled to the measurement circuitry to receive the signal and calculate a process fluid pressure based upon the signal, the controller being configured to detect a process fluid pressure transient based upon the signal and store at least one parameter related to the process fluid pressure transient; a loop communicator coupled to the controller, the loop communicator being configured to provide a transmitter output over a process communication loop based upon the process fluid pressure at a transmitter output rate that is lower than the sensor measurement rate; wherein the process fluid pressure transmitter is configured to provide an indication related to the at least one stored parameter; and wherein detection of the process fluid pressure transient includes comparison of the process fluid pressure to at least one user-provided threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A method of operating a process fluid pressure transmitter, the method comprising:
-
coupling a pressure sensor to a source of process fluid; repeatedly measuring process fluid pressure using the pressure sensor and communicating a signal related to each measurement over a process communication loop; detecting a process fluid pressure transient using the pressure sensor and comparing each pressure measurement to a user-provided threshold; storing at least one parameter related to the pressure transient in the process fluid pressure transmitter; providing an indication related to the at least one parameter; and wherein communicating a signal related to each measurement occurs at a first rate, and measuring process fluid pressure occurs at a second rate higher than the first rate. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
-
Specification