Displacer (buoyancy) Level Transmitter Principle, Limitations, Design, Installation & Calibration
Measurement principle The principle of displacement level measurement is based on Archimedes Principle. Displacement instruments determine liquid level by sensing the buoyant force exerted on a displacer by the liquid…
PLC Timer Programming Examples – TON, TOF, TP and TONR
Discuss about PLC Timer Programming Examples - Different PLC Timers are TON, TOF, TP, and TONR. PLC Timer Instructions and Timer logics.
DP Transmitter Interface Level Measurement Principle, Limitations, Selection, Installation, Design & Calibration
The principle of differential pressure level measurement is based on hydrostatic head. Hydrostatic pressure measurement is the most common means for liquid and interface level measurements. For most applications, differential…
PLC Program for Blinking Lamp on 5 Seconds Interval
PLC Blinking Lamp on 5 Seconds Interval using Ladder Logic. When user presses the SWITCH then lamp will energize & remains ON for 5 seconds time duration.
Electrical Measurements and Instrumentation Objective Questions & Answers
Electrical Measurements and Instrumentation Objective Questions & Answers A 10MHz CRO has (a) 5MHz sweep (b) 10MHz vertical oscillator (c) 10MHz horizontal oscillator (d) 10MHz supply frequency Which of the…
Electrical Machines Objective Questions & Answers
Electrical Machines Objective Questions & Answers Q.1 The two winding's of a transformer are (A) conductively linked. (B) inductively linked. (C) not linked at all. (D) electrically linked. Q.2 A salient…
Level Instruments Design Rules
The following points are considered during level sensors selection or during time of plant design. They are Pressure Vessel Connection Vessel bottom connection Range selection Material Environment Standpipes vs. sensor…
PLC Program for Alternate Output Circuit with Latched Function
Design a PLC program for an alternate output circuit with a latched function and explain the ladder logic with a solution.
Fire Extinguishers Mock Test
In this MCQ you can learn and practice Fire Extinguishers objective quiz questions to test your knowledge on the subject.
Pilot Valves and Pneumatic Amplifying Relays
Self-balancing mechanisms consisting solely of a baffle/nozzle detector coupled to a feedback bellows, while functional, are not always practical as field instruments. Nozzles and orifices must be made rather small…
