Design and simulation of automatic control valve for gas flow meter calibrator of bell prover

Although the Research Center of Metrology, Indonesian Institute of Sciences, has successfully got accreditation of ISO/IEC 17025:2005 for calibration laboratory on gas flow field in measuring range of 250 ~ 1200 L/min by uncertainty of 0.8 % in 2016, The facilities to control gas flow rate by valve is still manually. The planning to upgrade to automatic control valve of motor drive is better by design and simulation study to avoid inefficiency of purchase. The purpose of this research is to design and simulate the automatic control valve for gas flow meter calibrator of bell prover. From the simulation and results, the flow rate has linear proportional to the torque requirement of motor valve which the maximum torque value around 0.7 N-m in the highest flow rate. The 24 Volt power supply design has the best result simulation due to the speed and torque of motor.