Answer / qamar_alam

close loop means there is feedback.

Why 250 or 500 ohm load resistance is use in any transmitter

2 Answers  

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In control valve proximity inductive sensor is taken as digital feedback for full open and full close.Normally its volts 24v when the sensor acts the feed back voltage 14v so that our relay not indicating in plc panel . kindly give the solution.

0 Answers  

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plz exlain the dcs system of ABB sympony hamnony

1 Answers  

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What is diffrent profibus & OFC Communication

1 Answers   Priya Cement,

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Explain Gas Turbine startup and shutdown sequences

0 Answers  

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what is stroke check for field instument transmetter's & AOV's

0 Answers  

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what is the procedure of O2 analyser calibration?

3 Answers   Thermax,

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different between calibration range and instrument range ?

2 Answers  

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how to tune siemens sipart electro pneumatic positioner..plz tel me..

0 Answers  

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What kind of feedback is used in DP cells.

1 Answers   CCIE,

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how u meassure a room temp?in rtd or themo couple?

4 Answers  

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why do 4 mA serves as 0% not 0 mA?

10 Answers  

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