[Editor’s note: This is the third in a series of three columns about scroll compressors that began in the Sept. 1 issue of The NEWS and continued in the Oct. 6 issue.] Compressor capacity control is ...

A linear control variable yields a uniform surge margin across the full operating range and simplifies both closed-loop and ...

The service technician cannot control many factors that affect a reciprocating compressor’s capacity. However, the tech can control a few factors that can help the system have more capacity and run ...

A shift to angular and polar coordinates offers control engineers a more physically rigorous, PID-friendly approach ...

Although digital control systems—distributed control systems, programmable logic controller, and other automation equipment—are present in practically every process safety management (PSM) facility ...