Interested to Buy Any Domain ? << Click Here >> for more details...
Explain Split Range Control In Control Valve Briefly.
- 5 Answers
- 30445 Views
- I also Faced
- E-Mail Answers
Answer Posted / www.islamqa.com
perfect answer sam as usual
and if there is something else to say I can say that split
range control ( or call valve sequencing ) is a technique
used for satisfy the procsee requirements.
Actually we have techniques and modes for this strategy.
The used techniques to achieve valve split
ranging /sequencing are:
1 - Valve bench set adjustment (modify the valve itself)
2 - Positioner adjustment
3 - I/P adjustment
4 - Using 1 controller with 1 I/P and 2 adjusted valves
and this is very slow process as we have to wait a long
time till the pressure is built up witin the loop.
5 - using 1 controller with 2 series I/P
and here we face the risk of voltage drop.
6 - using 1 controller with dual o/p.
7 - using 2 controller with the same input.
# And we have 3 main modes for this strategy:
1 - COMPLEMENTARY:
where 1 of 2 valves opening is opposite to the other
@ 4 ma valve-A is fully open while valve-B is fully closed
and thier stems move synchronously.
2 - EXCLUSSIVE
3 - PROGRESSIVE
Ahmed Sabry
Control and Instrumentation Engineer
GPC - General Petroleum Company
ahmedsabry.online@gmail.com
CELL.: 00 2 0121367310
| Is This Answer Correct ? | 6 Yes | 2 No |
Post New Answer View All Answers
How to Calibrate Interface Level Troll in field
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
how to work static pressure sensore how to work dpt
How does temperature bath work? How does coil gets heated only by applying some current?
How to calibrate capillary type level transmitter
what is cold loop? difference between hot and cold loop?
How to measure the dust in chimney(spm)?
I am manjunath having exp in maintenance of chemical plants,know i want to do a design course INTOOLS,after doing design course can we get jobs in design field.sinve i dont have design exp..
How to decrease opening & closing time of on/off valve?
What is the use of temprature compensation?
What is hp & mp seperator .& what is its working principle ?
Why plc require in analog input 4-20amp & 0-10 volt?
Please send me the sample question of Instrumentation of hpcl/iocl exam. my mail id hihi_kiholo@rediffmail.com
What is the PLC configuration in Cement industry?
What is the function of solenoid valve in on/off & shutdown valve and why it is not used in control valve normally?
