Types of Pneumatic Valves : Poppet & Spool
Valves are essential components in every pneumatic system, providing a method by which the air flow to or from other devices can be accurately controlled. The following chapter looks at…
Alarm and Trip Systems
Alarm and Trip Systems The purpose of an alarm system is to bring a malfunction to the attention of operators and maintenance personnel, whereas the purpose of a trip system…
Pneumatic Valves and Cylinders Sizing – Part 2
Air Consumption and Air Flow The difference between air consumption and flow rate can sometimes be confusing since both are specified using the same units. Air Consumption is defined as…
Pneumatic Valves and Cylinders Sizing – Part 1
Valve and cylinder sizing represents possibly the most important element in the design and specification of any pneumatic system. Carried out correctly, it will ensure that capital and operating costs…
Instrumentation Diagrams Multiple Choice Questions
Instrumentation Diagrams Multiple Choice Questions Question 1 Identify what type of diagram this is: (A) Wiring diagram (B) Isometric drawing (C) SAMA diagram (D) P&ID (E) Loop diagram Answer :…
Identify Two Pressure Switches Logic
Two pressure switches are plumbed together so as to receive the exact same pressure at all times, and they both sense the pressure of compressed air in a pneumatic system.…
McLeod Gauge Working Principle
Measurement of vacuum by two methods : 1. Direct measurement Resulting in a displacement caused by the action of force 2. Indirect measurement or inferential methods Pressure is determined through…
What is a Electric Motor Actuator ?
Electric motor actuator vary widely in their design and applications. Some electric motor actuators are designed to operate in only two positions (fully open or fully closed). Other electric motors can…
Pneumatic Cylinder Air Flow Calculation
This is critical to ensure that the pneumatic cylinder is supplied with enough air flow to operate as it is intended in your system design. This calculation does depend on the type…
Air Consumption Calculation for ON/OFF Valves
Air Consumption Calculation for ON/OFF Valves Generally we specify air consumption in SCFM ( standard cubic feet per minute) for on/off valve as an intermediate (Non-continuous) service. Air Consumption calculation…
