The listing for Loman Control Systems Inc. in Control Engineering 's 2005 Automation Integrator Guide , mid-Dec. '04, p. 40, included an incorrect Control and Information Systems Association (CSIA) logo. The listing should have included the logo showing that Loman is a Registered Member of the CSIA. For more information, visit www.lomancsi.com .
The equation on the first line of "Figure 1, Critical Pressure Drop," in "Control Valve Cavitation," Inside Process section, Control Engineering , Jan. '05, p. IP10, was incorrectly stated. The correct equation is:ΔP critical =F L 2(P1 - F F