PLC Connection between Instrument, Junction Box, Marshalling & System Cabinet
A PLC connection represents the signal flow starting from the field transmitters, junction box, marshalling cabinet, system cabinet and Human-Machine Interface for the operator graphic display. PLC Connection Here we…
PLC Temperature Control using Pulse Width Modulation (PWM)
Write the PLC program for temperature control with PWM output of PID. Temperature control with PWM output of PID Solution Here we use RTD sensor for temperature measurement and a…
JT Valve Working Principle
JT valve works on the principle that when the pressure of a gas/Liquid changes, its temperature also changes. The Joule–Thomson effect describes the temperature change of a gas or liquid…
Top 100 PLC Objective Questions and Answers
Instrumentation Tools assists you a complete guide which mainly targets the aspirants of Electrical, Electronics and Instrumentation engineering Streams to crack the competition exams and prepare for the top MNC…
What is Thermowell and How-to choose Thermowell Probe Length ?
The American Society for Testing and Materials (ASTM) has defined the term Thermowell as " a closed end re-entrant tube designed for insertion of temperature sensing element, and provided with…
PLC Compressor Control Ladder Logic
The compressor can be run individually in manual or automatic mode. PLC Compressor Control Ladder Logic Two compressors are to be operated alternately from one AC power supply. If one…
PLC Multiple Choice Questions
Instrumentation Tools assists you a complete guide which mainly targets the aspirants of Electrical, Electronics and Instrumentation engineering Streams to crack the competition exams and prepare for the top MNC…
100 PLC Quiz Questions : True or False
Instrumentation Tools assists you a complete guide which mainly targets the aspirants of Electrical, Electronics and Instrumentation engineering Streams to crack the competition exams and prepare for the top MNC…
Programmable Logic Controller Quiz
Instrumentation Tools assists you a complete guide which mainly targets the aspirants of Electrical, Electronics and Instrumentation engineering Streams to crack the competition exams and prepare for the top MNC…
Control Room Alarm Management Practices
This article gives simple and practical guidance to managers, supervisors and operators on how-to recognize and deal with typical human-factor problems involving alarm systems in the Oil & Gas, Power…
