This document discusses instrumentation topics including accuracy, precision, hysterisis, stability, subdivision, data logging, pressure transmitters, range, sensitivity, error, valves, RTDs, repeatability, resolusi, thermocouples, control, DACs, and ADCs. It was authored by Adhitya Maulana Yusuf with student ID 111611034 studying Refrigeration & Air Conditioning Engineering at Politeknik Negeri Bandung.