in split range control valve,two valve should be in two
different line and that should have some distance,and we
have only one positioner feed back link.so how we connect
one feed back in two control valves?if you have picture
please forward me.my email id kb.syamkumar@gmail.com
Answer Posted / ansarru
Not only one positioner.we should have positioner for each valve, that is there are 2 positioners.
Normally one valve work with (4-12) ma and another work with (12-20) and by this way,we are ecoordinating two manipulated variable for a single controlled variable, achieving "SPLIT RANGE CONTRL "
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
Why are the uses 24vdc in industries
What are continuances of connecting earthing and shield of branch cables (instrument to Junction box), at the same earthing pot provided on JB? Is it ok, or may produce some problem?
Draw symbols of the following :
how to calculate signal cable sizing? and multipair cable sizing??explain in brief?
Sir, I want junior executive, Instrumentation question papaer for IOCL, Plz send to arabinda.ghosh83@gmail.com
Explain about the leakage class of the control valves
how can use ram
What is the minimum rating availalbe for weld neck orifice in market?
how can i calibrate the temperatuture gauge used by temperature bath(dry block) i mean step by step procedure?
What is stripper & spilitter ? Diffrence in this.?
what is the procedure to callibrate temp controller ,pressure controller,etc. suppose a temp controller showing error 1.5 degree centigrate how can i minimize it.
what about your moleg in pogrees with company
what happen if i increase height of displacer type LT.accuracy or sensitivity are affected.why?
Why we are using DPT(Differential Pressure Transmitter) in separator instead of level trasmitter?
Which are all the commonly used Bordon tubes in the pressure gauges. Do any one use ASTM A 312 tubes for this purpose?