where we are used split range control

Question Posted / kutti

1 Answers
5897 Views
Borouge, I also Faced
E-Mail Answers

where we are used split range control..

Answer / deepan.p

split range control means we have only one measurement &more
than one manipulated variable.
ex:
seal steam system of turbine &turbine driven boiler feed
pump.
description
aim of system is to maintain seal steam pressure constant.
it has two control valves name it as seal steam valve&leak
off valve.
upto (4-12)ma(3-9)psi seal steam valve operates
ex:
if its closed for 4 ma its fully open when it receives a
commend signal of 12ma.
after that (12.1-20)ma(9-15)psi leak off valve operated.
ex:
normally it'a fully open at 12ma .if commend reaches 20ma
the valve will be closed .
that what they designed the control system and field control
valve positioner.

Is This Answer Correct ?

9 Yes

2 No

Post New Answer

More Instrumentation Interview Questions

What is the logic a Transmitter control a Control Valve? How the signal going to the Control valve? What are systems/Panels/cables/signal used to control valve from Transmitter?

3 Answers

What is NODE in DCS?

2 Answers

i install a DP transmitter of Faugi on drum level of boiler but i face a problem in it when i engergize the transmitter the meter shows 0 or 100% no variation in it.the distance of two points is 19.5 inches, i am in trouble please suggest me what can i do it's very urgent Please reply me as soon as possible Best regards ikraam haider

5 Answers

What does PCU means with respect to Dead Weight Tester?

1 Answers SGS,

how to install Differential pressure transmitter in gas line.i need transmitter down side.

7 Answers Rockwell,

dear friends pls tell me how temperature compensations are done in bourdoun tube of pressure guages thankx

1 Answers

what is Dry Leg calibration and where is it used

1 Answers Petrofac,

What is the compensation of thermocouple

2 Answers Samsung,

what does mean by analog output trim and where this one used for?