IN SITU PROBE WITH IMPROVED DIAGNOSTICS AND COMPENSATION

摘要

A process combustion transmitter (10) is provided. The transmitter (10) includes a process probe (12) extendible into a flow of process combustion exhaust. The process probe (12) has a measurement cell (36) and a diffuser (32) that define a chamber (52) within the process probe. Electronic circuitry (42) is coupled to the measurement cell (32) and is configured to provide an indication relative to a combustion process based on an output signal of the measurement cell (32). A pressure sensor (50) is coupled to the electronic circuitry (42) and is fluidically coupled to the chamber (52). The electronic circuitry (42) is configured to provide an adjusted calibration based on pressure measured within the chamber (52) during a calibration.