Depending on the Equipment, Application, and Test Method, You May Be Able to Extend the Full Test Intervals for SIS Valves. This article is written by William L. (Bill) Mostia Jr., PE, of Exida, League City, Texas. Mostia has more than 25 years experience applying safety, instrumentation, and control systems in process facilities. He may be reached at email@example.com.
PD Flowmeters Quitely Excell in Low-Flowrate, High Viscosity, and Liquid and Gas Metering Applications
Positive displacement (PD) flowmeters are the workhorse of today's flowmeter world. They perform many important flow measurements most people take for granted. For example, they are widely used for metering both water and gas in residential, commercial, and industrial applications. Chances are good the flowmeter that measures how much water you use at your house is a PD meter.