Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / kuntal nayek
Yes we can use control valves without positioner.
But it will be risky as we would not able to know the
feedback that valve is working properly or not.
Normally position feedback is used to get the actual
position of the valves it is not used to control the valves.
To control a control valves we needed the process value that
usually called PV..that may be pressure, flow etc which we
could get from the transmitters or any other instruments.
According to PV controller generate corrected signal (ie.
Setpoint - Process value = error)in terms of 4-20mA.
| Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
what is isloted barrier how it works and what are the main purpose.how it make safe area.
How to calibrate Toxic gas detector?
There are many type of control cable like pair,core,tried, What are defination each one
What denotes the 5/8mm in the 3300XL 5/8mm proximitor probe?
use of split range ? where it is used ? in which control loop it is used ?
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.
please any body have most important data for study for saudi aramco test of instrument QC thanks email shahnaveedullah@gmail.com
what is actual drum level and compensated drum level?
How servomotor controls throttle valve of TURBINE?
centrifugal compressor interlock? Tell me the parameter at which compressor will trip
State some of balance principle’ advantages?
What is the diffrence between digital signal processing and discrete signal processing?
How to convert milliampares into flow??
send me HPCL paper
what is sil (safety integrity level
