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 diff between sensors and transducers.explain with ex?

15 Answers  


what is the difference between SMART and tipical transmeter ?

3 Answers   Sirte Oil Company,


Specify for Cables - Flame Retardant and Fire Resistant?

0 Answers  


how to callibrate a new i/p converter

7 Answers   TATA,


WHICH IS BEST INSTRUMENTATION OR ELECTRICAL ENGG?

3 Answers   SAS,






i want to measure temp of hot sand(welding flux) in closed chamber(around 150 deg C).Which is better thermocouple or thermometer?

1 Answers  


What is the purpose of LO overhead tank in turbines.

1 Answers   ADMA OPCO,


Who to difference between analog in & analog out in dcs?

0 Answers  


CAN YOU USE MOVING COIL METER FOR MEASURING A.C?

2 Answers   DVC,


how to replace the smart transmitter software

1 Answers   L&T,


what is control valve and how is work

5 Answers   Descon,


For a diafhram 1.5 d =kn(p-p0) D4 Where d in deflection in inch k=constant n=no of capdule (P-P0)=Applied pressure in psi D In active dia at capsule. -1.5 d=k to p d being constant -1.5

0 Answers   L&T, Shiv Tech Marine Control,


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)