Patent ID: 7996161
Filing Date: 2011-08-09
Classification: G01L

Abstract:
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.