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Prepare with the best Oil and Gas Instrumentation Interview Questions and Answers covering transmitters, safety systems, loop checking, field instruments, and calibration in offshore and onshore plants.

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Explore the top 100+ instrumentation interview questions and answers covering sensors, transmitters, control systems, PLCs, and more. Perfect for job preparation

What is PNP and NPN Proximity Sensor Switch? Uses and Applications Explained

Understand the PNP and NPN output configuration in proximity sensors. Learn the difference between NO (Normally Open) and NC (Normally Closed) outputs with wiring logic and selection guide.

Learn what a proximity switch is, how proximity sensors work, their types, operating principles, applications in automation, sensing range, and more. Ideal guide for beginners and engineers.

Prepare for your next automation job interview with these top 100 Siemens PLC interview questions and expert answers. Covers S7-1200, S7-1500, TIA Portal, ladder logic, OBs, and more.