WHAT IS D/O D/I AND A/O A/I PLZ EXPLAIN

2 Answers  

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A DP transmitter is used to measure the level of an open tank. The drain line of the tank is connected to a control valve, and is configured as, if the level of the tank is 90% the valve should get open 10%. And if the tank level is 10%, the valve should get open 90%. Draw wiring diagram and explain how to configure DP transmitter and control valve using HART communicator. If the span error at output is 1%, what will be the %opening of the control valve at 60% level of the tank?

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what is the calibration standard for pressure and differential pressure transmitters?

1 Answers   Thermax,

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what is the well head protection system?

1 Answers  

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in the boiler in the main steam line and its bypass line and the startup vent vales are only motorised valves why cant we use other types of valves such as pneumatic.

3 Answers  

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How can SmartPlant Instrumentation users take advantage of these global services?

1 Answers  

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how to measure oxygen which methods are using?

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How Many Slave Can be used in one slave ?

2 Answers  

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loop chech tools list

1 Answers   BAP,

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If I installed wrong directions orifice plate then what showing value d.p transmitter?

2 Answers   Forbes, STS,

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How to measure the dust in chimney(spm)?

0 Answers   Thermax,

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what is the difference b/w magnetic flow meter&mass flow meter? which one is best?

1 Answers  

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