why cant we use mV instead of mA?
Answer Posted / rakesh kumar n
There won't be any current drop in mA, but when you consider
Voltage there will be Voltage drop.
-->main Reasons for Voltage drop
#Distance between the Field and Control Room(more the
Distance and more will be the Voltage drop)
#Consider if the Distance is small between the Field and
Control room,then also there will be Voltage drop,because it
is milli Volt
#Theory Sum of the incoming current and Out going current
is always Zero 20mA=20mA by KCL, if you find any thing
wrong,you can check it in Transmitter Outlet and the DCS
Inlet will have the same milli Amp.
Thank you
Rakesh Kumar.N
INSTRUMENTATION ENGINEER
Is This Answer Correct ? | 10 Yes | 1 No |
Post New Answer View All Answers
what is the process to make control schematic ?
How to Calibrate Ultrasonic Level Transmitter in field
I was working on calibrating turbidity transmitters endress+hauser at effluent polishing plant.We calibrated using NTU buffers.What happened is that when we immersed the sensor, everytime we raise and lower the sensor gradually, the reading will vary.my question is that is there any specifications on what is the required distance from the bottom of the container with buffer to the face of the sensor?Is it ok to install the sensor in a medium which has turbulence specially if bubbles are present?
why we are using digital signals for I/O & how to measure this signals is getting or not ?
Hi, I am Newely Joined in Construction company instrument engineer? Any one can Plz tell me How can I advanced preparation for Releated Engineering and construction Documents?
Draw symbols of the following :
What is the difference between modbus,fieldbus & profibus
any questions on motor and energy conversions machines?
Area classification, Equipments, Gas groups, temperature classification, Ingress protection, Fire Extinguishers.
What are the maximum packet size of: a) HART b) Profibus DP c)Profibus PA d) DeviceNet e) Foundation Fieldbus
I am teja. I am studying Msc(tech) Electronics and Instrumentation (3years course) in Andhra university. But my course is not recognised by UGC and AICTE. Please tell me the job opportunities after this course. And i fineshed PLC course in IGIAT ,Vizag.Also complted my short term coure in SCADA, Seimans WinCC in ATI,Hyd.After Msc can i join Mtech for good job? or phd. How i can get good job in INdustrial Automation Side. Please give replay.Because this is my life matter.
What types of Instrumentation Related Questions can an Interviewer ask in a Telephonic Interview ?
what would be the minimum flow rate that we can measure on rotameter..?
pls suggest suitable MOC of diaphragm for pressure measurement of UREA grade solution service fluid.
selection criteria of control valve? and selection criteria of actuator explain in brief?