Compressor & Compressor Valves Maintenance
How to Maintain a Compressor and Compressor valves The compressor is a device that develops potential energy stored in pressurized gas from electricity or fluid. When looking at a gas…
Latest Electrical Motors Questions and Answers
How do the new IE efficiency classes compare with the old EFF efficiency classes? The new IS: 12615-2011 defines the following efficiency classes of low-voltage three phase asynchronous motors in…
Draw Wiring of a Pressure Switch to control two lamps
Sketch the necessary wiring to make this pressure switch control two lamps in the following manner: High process pressure: green lamp on and red lamp off •Low process pressure: red…
Cables and Cable Glands Questions and Answers
Cables and Cable Glands Questions What are different elements of a Cable? Basic about cable components & constructional details Conductor Conductor is a current carrying element made up of Aluminium…
Functional Safety Questions & Answers
Functional Safety Questions & Answers : SIS as an "instrumented system used to implement one or more safety instrumented functions. Functional Safety Questions & Answers What is PHA ? Process…
Types of Valve Leakage Tests
All valves are inspected and tested by the manufacturer to ensure that they conform to the required valve leakage standards. In addition, optional testing can be requested by the purchaser,…
How to Connect Proximity Switch (Source Type) to Make LED ON ?
An improvement over direct-contact limit switches for many applications is the inductive proximity switch. This type of switch actuates simply when an object gets near it – no direct physical…
Define Normal Status of a Process Switch ?
Switches, whether they be hand-actuated or actuated by a physical process, come in two varieties: normally-open (NO) and normally-closed (NC). You are probably accustomed to seeing both types of switch…
Breather Valve Working Principle
Breather Valve, also known as direct acting Pressure/Vacuum Relief Valves, are special types of Relief Valves which are specifically designed for tank protection. The range includes pressure only, vacuum only…
Strip Chart Recorder Working Principle
A chart recorder is an instrument used to record various process and electrical signals. The most traditional chart recorders record data on paper. The paper is passed under a pen and the…
