Design of control system expand valve on water heating process air jacket

Abstract

Abstract Many automatic machines implemented in the processing of palm oil in the industry are less effective in working on a heating control process in the jacket water system. With the ATMega, 328 Arduino Uno microcontroller control system as an Arduino program input and output controller and “C” language, a servo motor as output (valve) is controlled, and LCD as a display device for LM35 temperature detection can make it easier for workers to control the process of controlling water temperature on the jacket and can avoid failure in the process of melting the palm oil from the previous processing so that the oil in the pipeline continues to flow. The method used in this research is the design method that consists of several stages, namely, (1) Requirement analysis, (2) Design, (3) Implementation of the circuit, (4) Testing Procedures and (5) Testing tools. The level of accuracy of the rotation degree of the servo motor (as a valve) qualifies 100% (>35 °C and ≤ 49 °C, the motor rotates 40o), the relationship between temperature and the rotation speed of the servo motor qualifies with 100% accuracy (>50 °C and ≤ 53 °C then the motor rotates 80 °C) The overall performance of this tool can work well and calibration of the detection temperature value between the LM35 sensor with a thermometer has a difference of 1 mV so that it can be implemented by adjusting devices in the industry.