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Process Control

What is Protective system Override ? & What is Protective Override switch (POS)?

What is Protective system Override? If two or more circumstances are met at...
Communication

What is the purpose of Gateway, Bridges & Routers in networks?

Gateways, Bridges & Routers are the interconnecting devices in a network topology. The internetworking...
PLC

What is Latch? How does a Latching work in PLC program?

The latch is to hold an output energised, even when the input stopped. There...
PLC

Difference between PLC & PC

This is a basic question fresh automation personnel, who first introduced to PLC may...
Control Valve

Basics of Electro-hydraulic actuator

Electro-hydrostatic actuator (EHA) replace hydraulic systems with electrical power-only self-contained actuators. EHAs eliminates the...
Control Valve

Types of electrical actuators – Linear & Rotary actuators

What are electrical actuators? The electrical actuator is an electromagnetic device that converts electrical energy...
Electrical

How does Relay work? Types of relays

Relays are an electronic component that can implement switching logic. Relay is a device...
Control System

What is Reliability Centered Maintenance (RCM)?

Reliability Centered Maintenance (RCM) is a process used to determine what must be done...
whatis

What is proactive maintenance?

Proactive maintenance is a preventive maintenance approach that operates to correct the root causes...
Instrumentation

What is Low Water Cutoff pump control? & installation consideration.

Why Low Water Cutoff pump control? It is harmful to boiler when water level in...
Level Measurement

Different types of level gauges:

Slight glass level gauge: A glass of sight or a water gage is a transparent...
Communication

What are the functions of HART communicator? How to use it for Zero trim & D/A trim?

Functions of HART communicator: The main function of the HART 375 Communicator is to communicate...
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