Corrosion measurement field device

Abstract

Low power corrosion measurement (2) devices are described with programmable configuration for implementing one or more advanced corrosion measurement (2) types to provide conductivity, general corrosion, and / or localized corrosion values in a field transmitter (4) for online corrosion monitoring or off-line corrosion data logging.

Description

technical field [0001] The present invention relates generally to corrosion measurements, and more particularly to low power field devices for corrosion measurements. Background technique [0002] Field installed transmitter devices have been widely used in process control environments to provide process variable information to control and / or data acquisition devices. Unlike laboratory measurement equipment, environments such as manufacturing plants, chemical processing plants, oil refineries, etc. where the equipment experiences extremes of temperature and humidity, field devices need to be constructed with hermetically sealed protective enclosures to withstand harsh environmental conditions. Such devices would typically be used in a distributed control system to sense temperature, fluid pressure, flow, and other variables used to control an ongoing process, and would typically be connected through a 4-20mA control loop To other control equipment, the transmitter draws pow...

AI Technical Summary

Problems solved by technology

However, none of the conventional in-situ corrosion transmitters can provide the necessary level of corrosion measurement accuracy and versatility to measure corrosion of a wide variety of structural materials, types of fluids being conveyed, and temperatures, so there is a need for improved in-situ transmitters to measure One or more corrosion-related values

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