Calibrate accuracy of flowmeters, pressure gauges, temperature indicators, controllers, and other recording, indicating, or controlling instruments to locate defective components in system, using test equipment, such as pressure gauges, mercury manometers, potentiometers, pulse and signal generators, ammeters, voltmeters, and power meters. Must be able to basic understanding of programming, troubleshoot and maintain all instruments and logic controllers which utilizes programming languages: plain English structured text, sequential function chart, function block diagram and ladder logic.