What is the Difference between E/P Positioner and I/P
positioner in a control valve? In which applications the
respective positioners are used in?
Answer Posted / abhinendra singh bhadauriya
i/p is a converter that converts 4-20 ma input signal to an
pneumatic signal(3-15 psig or 6-30 psig).i/p converter took
the input in the form of current (ma)and produce an output
in the form of pneumatic signal (air)which is used to
maitain the position of control valve.
but e/p positioner is an device which also reside i/p
converter inside it along with the positioner , means e/p
positioner is the combination of i/p converter and
positioner which receive the electric signal (as current or
voltage)and convert it in pneumatic form which is
responsible for the operation of control valve.
thangs
| Is This Answer Correct ? | 8 Yes | 4 No |
Post New Answer View All Answers
all questions related to instrument technician in any offshore oil and gas company.
What is eddy current? Describe the operating principle of proximity probe.
What is the right procedure for adjusting the gap voltage of bently nevada vibration sensor?
How can a d.p. Transmitter be calibrated?
In most instances, Inertia processes are quite uncommon. Give an example of a combined Resistance and Capacitance situation.Describe an application, which according to your understanding of the subject matter, comprises of both Resistance and Capacitance effects.
how u choose thermowell lenght n pnumatic C/v size?
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.
How you calibrate absolute pressure with the calibration range of 0 to 1000 0C Absolute. Please explain the procedure for calibration.
Hi Friends , i need one urgent help , i am preparing for M.tech entrance examination , i need some obejective questions related to instrumentation field. where can i get those ? can anyone help me pls ?
Why do you want to work here
how does we calibrate a square root flow transmitter ,give an example and explain it step by step like range calculation , calibration hook up series connection , zero check , and how to apply pressure , and if not geting proportional output then what should we do ?
while am calibrating Drager polytron 2IR flame gas detector occured non zero status.how can i get zero status?
1.what is the effect of vapour presuure in orifice plate flow measurement 2.which is more effective 2 pressure sensors or one single differential pressure sensor in orifice plate measurement 3.how to design a v/i converter and i/v converter 4.how many type of thermocouple are there 5.how many leads are there in thermocouple measurement 6.how pressure sensors are connected in level measurement in differential pressure method 7.what is the output of capacitive pressure sensor (ac or dc),how its o/p is signal charactarized 8.what is the physical meaning of discharge coeeficient,why it is calculated,orifice plate what is its value,why it is less than 1,Q at upstream is equal to or not equal to Q at downstream of orifice plate why?what is vena contracta in orifice plate 9.why rotameter is called variable area flowmeter,it can measure flow even if area is not varying,why it is made tapered 10.design a 10 bit counter ,which counter you will prefer 11.how to remove self heating error in RTD 12.which is more sensitive pt100 or pt50 13.why thermocouple are connected in parallel 14.what is lead contact error in RTD,how to avoid 15.what is P,PI,PID,PD controller,why there is no ID controller 16.what is override,split range,sequential,ratio,feedforward,cascade controller 17.why we moved from SR to JK and then JK to master slave JK flipflop,give correct reason 18.how to measure level of a closed container which contains vapour and liquid,remember no vapour gas should be leaked,so ultrasonic and capacitive is not an option,design another method 19.how to design horse race counter including sensors and signal conditioning element 20.what is bevelling
Tr. Wiring for calibration.
how to turbine speed measurement?