If I want to buy a pressure switch & 3-way valve for hot
water application then witch parameter I should consider.
what is the different between plc and dcs ? I know full name of this two but I want to know what structure and working style and speed I/O capacity and controller difference?
which type inter lock use in petrochemical refinery,and oil & gas?
how to control motor load with rpm or vfd
Why we using 250ohm resistance during lab calibration and why not using in field in one plz define deeply???
why need 3 element system in power plant? if it is not there then what l happen?
What is CNC
how we can check level probe and controller
Which of the following instruments consumes maximum power during measurement?
why we use 4-20 mA to do calibration of the instruments.why we cant use 0-20 mA?
why we should maintain neutral earth voltage below 1V while calibration? why cant it be 1.2V or 2V
Draw a 3 element level control loop and explain
WHAT IS THE VALUE OF MICRON
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