Development of Remote Temperature Monitoring and Fault Tolerant Reporting System for Acid Gases Removal Unit

Industrial applications have evolved over the years with an ever-increasing need for optimal performance and as little down time as possible. To maintain integrity, stability, safety and fault finding with tolerant schemes were introduced to many industrial productions and instrumentation techniques. This work designs a fault diagnostic and tolerant (FDT) scheme; faults were diagnosed based on deviation from the normal working mode of primary components and automatically disengaged the system from supply voltage with alerting information for immediately action. The FDT was incorporated into an existing Proportional-Integral-Derivative (PID) control scheme. The FDT was also equipped with a remote monitoring system using Short Messaging Service (SMS) using a Sim800 to alert a remote system custodian on the occurrence of a fault and appropriate unit with components that is faulty. The fault diagnosis and tolerant control system with remote monitoring was then applied to a prototype acid gas removal system with a set point of 40oC with 38oC to 42oC. The FDT was able to maintain the control objective when faults occurred and the SMS messaging initiated when faults were simulated on Proteus.