PREDICTION OF ERROR MAGNITUDE IN A PRESSURE TRANSMITTER

摘要

A pressure transmitter (50) with an output (88) predicting the magnitude of error in the pressure transmitter's output (57). A pressure sensor (72) is adapted to sense a process pressure (74). A controller (76) coupled to the pressure sensor (72) generates a transmitter output (78) representing the process pressure (74). A memory (80) stores predetermined data predicting magnitudes (82) of transmitter output error as a function of cumulative excessive sensor output levels, and also stores a record of cumulative excessive sensor output levels (86). The controller (76) calculates a predicted present magnitude of transmitter output error as a function of the accumulated record and the predetermined data, and generates the prediction output (88).