Engineering Note · 06
A Bypass Can Help Startup—and Defeat Control
A small bypass line around a control valve can make startup easier—but can also defeat the control strategy if left open.
Engineering Note · 05Don't Overlook Dead Legs in Sampling Systems
Don't overlook dead legs in sampling systems. They can create slow response and misleading analytical readings.
Engineering Note · 07Pressure Doesn't Disappear When the Pump Stops
One thing I look for immediately when reviewing a reactor feed system is what happens when the pump stops but reactor pressure remains.
Engineering Note · 01Why Regulator Outlet Pressure Can Rise as a Gas Cylinder Empties
Why a regulator's outlet pressure can drift upward as cylinder pressure falls, and how two-stage regulation reduces the effect.