What is the difference between floating and fixed voltage?

1 Answers  

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(1) In turbine, what does term CDP, NI, NH, HSSOC, means. (2) What is the purpose of LO overhead tank in turbines.(3) An equipment is certified for EEX, IA, IIC,T6, what do you under stand by this.(4) what is SURGE, and how it is prevented, what is the purpose of bypass valve across AS valve.(5) Give 2 application of quartz crystal used for process parameter measurement.(6) what is meant by cold float of compressor shaft. (7) state four different types of flow measurement. For gas flow measurement mmscfd is the common unit. Expand the unit and specify significance of word S in the unit.(8) what is meant by Gap voltage, in vibration measurement. Normally how much Gap voltage is set and state the reason.(9) what will the new flow factor if D/P transmitter is Re-Ranged from 25” wc to 50” wc.(10) what is the usage of QDV & Volume booster.

0 Answers   ADMA OPCO,

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What is the difference between Analytical instruments and other instruments?

7 Answers   Schenck,

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WHAT IS THE DIFFERENCE BETWEEN PLC AND DCS

55 Answers   ABB, Adani, Adani Power, GMR, IIUC,

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how to calibrate an error for pressure transmitter, make it easy to understand

2 Answers   Descon,

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What is the logic a Transmitter control a Control Valve? How the signal going to the Control valve? What are systems/Panels/cables/signal used to control valve from Transmitter?

3 Answers  

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What is the reverse action and direct action

2 Answers   Samsung,

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what is a device net.

1 Answers  

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In RTU Panel we are having several Analogue & Digital Inputs /Outputs. We are recently facing some problems over Analog inputs , which are not updating properly (But Digital Input are updating normally) Can any one tell me from where the problem is creating , we have checked PLC CPU card, Analog Input card & we reconfigured ,But still the issue is there. Issue : 1. Sometimes Analog values are updating & sometimes not. 2. Analog values are not updating normally , showing some wrong Values 3. Total dead (0 value) Analog values are Level & flow measurement from the field instruments. (But in field the instruments are working normally & Displaying the values normally in local display unit) This problem we are facing in our Water Plant. If any one experienced this same problem or having any ideas related to our issue PLS send your valuable Answers/Replies...

6 Answers   L&T,

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explane hart protocol? what is its advantages.

3 Answers   Jindal,

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what is the difference between Digital output DO signals /Commands for start/stop and Solenoid valves ??

1 Answers  

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what is RPI and NUT in controlnet networx. what happen if we are increase the NUT of controlnet networx?

1 Answers   Schneider,

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