What is Displacer Level Sensor ?
Displacer level sensor use Archimedes’ Principle to detect liquid level by continuously measuring the weight of a displacer rod immersed in the process liquid. The displacer is cylindrical in shape…
One Shot Rising PLC Example Program
Build the ladder logic program to turn ON or OFF the lamp using single push buttons using one shot rising (ONR) instruction. ONE Shot Rising (OSR) Instruction One shot Rising…
Magnetostrictive Level Transmitter Calibration Procedure
Magnetostrictive Level Transmitter is a two wire loop powered instrument which transmits an analog 4-20mA loop current in proportion to the measured liquid level in the tank. This type of…
Lamp Control using PLC Logic Condition
Build the ladder logic program to turn ON and OFF the lamp using push buttons with respect to program logic conditions. PLC Lamp Control PLC Problem Logic Start PB and…
Drive Multiple Speeds with Different Reference using PLC
Drive multiple speeds with different reference. Write PLC program for drive multiple speeds with different reference. PLC Multiple Speed Reference In drive application we need to operate drive in multiple…
Quiz Program Logic Using PLC Programming
Build the ladder logic program to satisfy the condition for Quiz program logic. PLC Quiz Program There are three groups participating in quiz program. Since the people are from different…
Jog Function in Motor Start Stop Logic using PLC
The common usage of the word 'Jogging' in our daily life is for slow running. 'Jogging' or 'inching' of a motor also implies the same i.e ., to have small…
MCQ on PLC (Programmable Logic Controller)
Instrumentation Tools assists you with a complete guide of objective questions which mainly targets the aspirants of Electrical, Electronics and Instrumentation engineering Streams to crack the competitive exams and to…
PLC Important Questions and Answers
This post covers the PLC important questions and answers which are discussed in an interview for automation engineer or PLC engineer. PLC Important Questions What is PLC ? An industrial …
Voting Logic in Safety Instrumented System (SIS)
There are 1oo1, 1oo2, 2oo2, 2oo3 etc voting logic in the safety instrumented system architecture. The voting logic architecture usually used in the field instrument and or final control elements to reach certain Safety Integrity…
