Installs, maintains, calibrates, troubleshoots, repairs and overhauls the indicating, recording, telemetering and controlling instrumentation (electronic, mechanical, pneumatic) used to measure and control variables - i.e., pressure, flow, temperature, motion, force and chemical composition - associated with and including computer and microprocessor control systems and associated peripheral equipment. Primary Duties/Responsibilities: Under general supervision, installs, maintains, calibrates, troubleshoots, repairs, modifies, and overhauls instrumentation; assist with the maintenance of the computer and microprocessor systems associated with the treatment plants processing of raw sewerage.