Self-control rate
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Instrument automation rate = Number of automated control loops in use / (Total number of loops – Number of loops not put into use due to process-related reasons) × 100%. What counts as reasons related to the process that prevent certain loops from being used? How is the automation rate calculated for batch operations or situations where control valves are kept open at a certain degree?
After approval, it is deducted from the total amount
Normally, the monitoring and calculation of self-control rates are carried out only after the definition and approval of each control loop. In other words, those used for starting and stopping, as spares, or that are always on or always off can be excluded after discussion. In other words, self-control rate monitors the automation level of the control loops in the normal production process!