HmT Mechatronics, as a sub-contractor to the end-user Novo Energy, was involved in the final stages of the SCADA and PLC system implemented at the Sebenza gas dispensing station. The concept of the system is to capture and store methane for alternative vehicle fuel use.
Two compressors needed to be controlled. One low pressure whiles the other high. The SCADA system logged the temperature, flow rate and pressure onto trending graphs. PID control was used to control the pressure, flow rate and position valves. User level security access was given to enables secure set point, alarm level trips & alarm conditions to be set via the SCADA interface.