why relays are used with plc?

4 Answers  

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Calibration procedure for water rotameters

0 Answers   HPCL,

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Why Flow measurement has to use Square Root

5 Answers   Hindalco, Petronas,

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ORP sensor working principle?

0 Answers   Tata Steel Limited,

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List three types Level Switches with their working principles

0 Answers  

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If The RTD(PT100) Show .776 Kohm Resistance the Temperature of process fluid how much?

3 Answers  

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when we calibrate the DP transmitter at that time which matrial we used in pressure pump?

4 Answers  

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In a gas over oil actuator, after the opening/closing of valve, how the gas is vented out? How does the hydraulic/gas circuit function?

0 Answers   Reliance,

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can we connect instrument earth pit to electrical earth pit, if not why?

2 Answers  

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why gray colour is choosing to all instrument panel.why not choosing other colour?

1 Answers   Reliance,

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The document / drawing that is primarily used in depicting the “Bill of Materials (BOM)” of piping system is the

2 Answers  

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defffrence between instruments and instrumentation

8 Answers  

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