PERANCANGAN DAN UNJUK KERJA SISTEM PENGENDALIAN PROSES PADA MICROFERM FERMENTOR

Abstract

State of Polytechnic Sriwijaya has a Microferm Fermentor that can not be operated, therefore it needs to be fixed and developed. The development being done is the addition of process control system. The purpose of this research is to design automatic process control system that is applied to microferm fermentor based on computerization. This research method starts with calibration program initialization on the alcohol sensor, pH and temperature control system, then performance test method based on fermentation process. This research uses pH Probe SEN0169 Sensor, Thermocouple Type-K, dan Gas Sensor MQ-5 as part of system which take data and Arduino mikrokontroller as a system which control the sensors. On the designed system, final control element used is a heater, cooler, and peristaltic pump for process changes. The research result shows that pH Dfrobot SEN0169 sensor, Thermocouple Type-K and Alcohol sensor can be used as a transducer, because they can work according to desired set point, it has error measurement ≤ 1%. Based on sensor performance test can be concluded that those sensors can be used in microferm fermentor because they are able to produce fermentation product that is in accordance to desired conditions and produced the concetration bioethanol of 8.925%.