Pt.Indah Kiat Pulp & Paper Perawang Tbk Kalibrasi Control Valve Untuk Spray Water Di Multifuel Boiler 26

This research discusses the calibration process ofthecontrol valve for spray water in Multifuel Boiler 26 at PT. Indah Kiat Pulp & Paper Perawang. The control valve is a crucial component in industrial controlsystems,functioningtoregulate fluid flow based on input signals from the control system. Observations showed that before calibration, the valve opening position did not meet the standard; for example, at 4 mA input, the valve opened 10% instead of 0%, and at 20 mA input, it only reached 95% instead of the required 100%. After calibration by adjusting the zero and span using a
hart communicator, the results met the standard, with the valve opening linearly proportional to the 4–20 mA input signal. The findings indicate that calibration improves the accuracy of the control valve’s performance, making the spray water control system more stable and efficient. Proper documentation of calibration results is also essential as a reference for routine maintenance to ensure optimal system performance and reduce the risk of failure.