Development of Low-Power Wireless Sensor Network of Conductivity Probes for Detection of Corrosive Fluids Inside Pressure Vessels and Piping

Overview

Main Objective

To develop conductivity probes that can be easily integrated into existing internal corrosion monitoring infrastructure (access fittings) and connected via a low-power wireless sensor network.

Public Abstract

One of the primary drawbacks of using electronic sensors for continuous corrosion monitoring in remote locations is the need to provide power and communications at the test location. This project will utilize a low-power wireless sensor network to overcome these challenges. Such a network will allow for sensors to be powered by locally-installed energy harvesting elements (i.e., thermoelectric, solar). The communication protocol of the wireless sensor network will permit each node to communicate with every other node and store (back-up) data for the entire network. This project will focus on developing conductivity probes that are compatible with industry-standard internal corrosion monitoring infrastructure (i.e., access fittings, coupon holders) and amenable to integration into a low-power wireless sensor network. This network of conductivity sensors will permit local measurement of electrolyte conductivity in process fluids and will allow for the detection of electrolyte accrual at dead legs and low points in a system.

Summary and Conclusions

This project has developed the technology required to integrate on-line conductivity probes into a low-power wireless sensor network. These nodes are able to be deployed in isolated locations without grid power or communications support by utilizing solar energy harvesting elements.

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