In today's competitive markets, manufacturers strive to continually improve manufacturing performance to meet their business needs and goals. As process control loops have a major impact on a plant's financial performance, focusing on loop performance is critical. Loop Checking: A Technician's Guide defines loop checking in the broader scope of control loop performance in addition to the more traditional terms of the plant start-up. It discusses general methods and practices that can be applied across many processes/industries. Featured topics include loop checking basics, factory acceptance testing, wiring and loop checks, performance benchmarking and sustaining performance.

Harley Jeffery has worked in the field of Industrial Process Controls for over 30 years. Beginning his career with Fisher Controls as a valve application engineer, he spent the last 23 years with Control Southern as a control systems engineer. His experience includes the design, implementation, testing, start-up, and ongoing improvement of analog, distributed, and digital control systems. Harley received a BSIE from Louisiana State University in 1974 and completed Monsanto's Electrical and Instrument Engineering School in 1978. Currently, he is a process control consultant and project manager with Control Southern Inc. He can be reached at harley.jeffery@controlsouthern.com.