why we use only 4-20 ma signal as AI and not 0-20 ma?

2 Answers   Honeywell, Oil and Gas Jobs,

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what is the approximate cost of U tube manometer having range 1000mmwc to 1000mmwc?

1 Answers  

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what is difference between differial pressure & delta pressure?

3 Answers  

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What is the use of the shield wire and how is the connection at both the ends of a shield wire?

2 Answers   Samsung,

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what is difference between accelerometer vibration sensor and proximity vibration sensor

3 Answers  

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What are the materials available to prepare individually for competetive exams in Instrumentation field? Plz reply...

0 Answers  

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

1 Answers  

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How does a redundant controller comes in line when the main controller fails??

3 Answers   Yokogawa,

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What is cold junction compensation in thermocouples? How is it achieved?

4 Answers   Honeywell,

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i have level transmitter -400 to 0 range for steam drum application but i am unable to calibrate if installation of lt below lower tap what will be the effect ? and as per std wht is location of lt ,above lower tapping or below

1 Answers  

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what is the different between plc and dcs ? I know full name of this two but I want to know what structure and working style and speed I/O capacity and controller difference?

2 Answers   L&T,

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DC motor and DC Drives working funda?

1 Answers  

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