A PLC-based Flowmeter Calibration Using PID Metode

Many calibration companies still use the gravimetric method in the totalizer and flowrate calibration processes for flowmeters, so the results obtained cannot be maximized considering that there are many factors that become limitations when using the gravimetric method, one of which is the height of the tank which has a significant effect on water velocity, requiring space. Wide area, the installation path used is not flexible, the flow rate for flowrate calibration is limited, and it also requires a large number of flow media, oil, water, diesel, and others. This paper discusses the design of a fluid flow regulation machine that functions for flowmeter calibration media that focuses on flowrate or flow velocity using PLC (Programmable Logic Controller) based automation. The calibration method used is a comparison method between a standard flowmeter and a UUT (unit under test) flowmeter. The flow rate that can be produced by this system is 150 liters per minute, but to prevent overload on the standard flowmeter, a threshold of 10% is made below the system capacity of 135 liters per minute. This PLC (Programmable Logic Controller) based discharge control machine has a stability value of 0.236 liters/minute.