Interested to Buy Any Domain ? << Click Here >> for more details...
without a positionar can a control valve operate? give the
difference of operating with positionar and without positionar?
- 5 Answers
- 11952 Views
- IOCL, I also Faced
- E-Mail Answers
Answer Posted / kkrameshkumar
Only the diaphragm actuator type control valves can be
operated without positioners provided that the spring range
of the actuator is within the range of control air pressure.
Cylinder actuator type control valves cannot be operated
proportionally without a positioner. only on/off can be
done.
With positioner we can achive the exact position of the
control valve with speed. If positioner is not there then
the actuation will be sluggish and we cannot get exact
postioning of control valve
| Is This Answer Correct ? | 5 Yes | 0 No |
Post New Answer View All Answers
Give an example where you had aproblem on the job, and tell me how you solved the problem. and the finalvoutcome.
Why mixer nd grinder Is example of constant torque load not variable torque load ???
I m appointed as an automation trainee engineer in small firm in that I am only the one , my company give me a project on s7-200 as i m beginner I don't know how to program so please send me the helpful site so that I complete my project before deadline....please help me out in this critical situation.
can any one explain in which term we are flow flow is it volumetric r is it mass? and y
How oil line flow measured?eplain about instruments used and working principle?
how do calibrate the valves.. with clear manual
which type of signal used in instrument?
what is the calibration procedure for magnetic flow meter @ onsite
How to work togather like sov,limit switch,proxy switch and booster in xv
Actual using of tube bender to bend 2 opposite 90 deg at correct measurement center to center of tubing.
what is different between 2,3&4 wire rtd and how much maximum distance using plc to field.
how to calculate control valve bonnet size?? or how to select its material?
please send me some question papers of HPCL aptitude test ?? please send it to bipinb.28@gmail.com ...
Explain operation of Haskel pump.
Which tank weighing system is better to install (Accuracy point of view) 1) Tank weighing system with 3 load cell or 2) Tank weighing system with 4 Load cell
