generally transmitter power supply having some range(12v to
35v) but the out put(4-20 mA) must same for given input.If
we vary the power supply voltage then output mA also to be
change according to V=IR. Is there any voltage regulator
in the transmitter ?



generally transmitter power supply having some range(12v to 35v) but the out put(4-20 mA) must sam..

Answer / kyle condran

Transmitters act as a current source so the voltage drop across the Tx will change anyway in order to provide the correct current out. As long as the supplied voltage is in the range of the Tx, ie enough to power the unit and drive the signal, it will not affect the signal.

Ohms law get tricky when there is a "constant" current source in the loops

Is This Answer Correct ?    7 Yes 0 No

Post New Answer

More Instrumentation Interview Questions

what is the essential difference between DIODE and SCR in term of application.

2 Answers   ADMA OPCO,


ORP sensor working principle?

0 Answers   Tata Steel Limited,


What is Loop Test & What is Loop Checking? Please i need answer for these questions.

2 Answers  


hello i'am samad.Any one Can help me! How to calibrate Vaccum Transmitter DP Type range 0 - 50 mbar abs by hand pump calibrator.

4 Answers   Bharathi Cement,


What is an analog input - output , digital input - output . Any example ???? How they r known its ai-ao or di - do

4 Answers   Torrent Pharma,






what is compensation in engineering and what is temperature compensation?

1 Answers   Binani, Yokogawa,


How does SmartPlant Instrumentation interface with physical design (3D modeling)?

0 Answers  


when placing a vent or drain hole on an orifice plate should you measure from the center of the bore up or down for the vent placement?

0 Answers  


what is difference between RTD , thermo couple and thermistor in general ?? (except temperature co-efficient )

5 Answers   Bilt,


How much voltage we are using at switches?

4 Answers   Edac,


What is rang ability?

0 Answers  


Guy's need your support,I want to measure closed tank level which is under vacuum -630mmHg using DP Transmitter, tank fluid density 1.38, Tank height is 7ft

4 Answers   icl,


Categories
  • Civil Engineering Interview Questions Civil Engineering (5085)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4451)
  • Electrical Engineering Interview Questions Electrical Engineering (16632)
  • Electronics Communications Interview Questions Electronics Communications (3918)
  • Chemical Engineering Interview Questions Chemical Engineering (1095)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (239)
  • Bio Engineering Interview Questions Bio Engineering (96)
  • Metallurgy Interview Questions Metallurgy (361)
  • Industrial Engineering Interview Questions Industrial Engineering (259)
  • Instrumentation Interview Questions Instrumentation (3014)
  • Automobile Engineering Interview Questions Automobile Engineering (332)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (97)
  • Marine Engineering Interview Questions Marine Engineering (124)
  • Power Plant Engineering Interview Questions Power Plant Engineering (172)
  • Textile Engineering Interview Questions Textile Engineering (575)
  • Production Engineering Interview Questions Production Engineering (25)
  • Satellite Systems Engineering Interview Questions Satellite Systems Engineering (106)
  • Engineering AllOther Interview Questions Engineering AllOther (1379)