Answer Posted / 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 View All Answers
how to calibrate steam control valve in steam turbine
need instrumentation job completed 1 year trainee ship in mnc pesticide company. now in search of job
hye SAM acn u send your e mail id, so that i can solve my query through e mail?
Lux meter is the measuring device to measure the lux level of lighting fixture. in industrial sector two types of lighting fixture is being used as street lighting purpose 1. HPSV (Sodium) and 2. HPMV (Mercury). HPMV having white light which is an combination of red, blue and yellow colour, while HPSV haivng Yellow lighting. in HPSV red & blue colour will be absent. during measurement of the lux level of HPSV and HPMV fixture. 1. Lux meter can measure the actual lux level of both fixture? 2. or it will show false reading for HPSV fixture light as it has only yellow light present. please give me answer
in sulfur process what is material of impulse line we use to connect with transmitter ? and does teflon affected by sulfur?
god evening sir i am studying m.sc(tech)electronics &instrumention.am i elegible to all industies
Why 4-20 amps is being used in instruments? Why cant we use any other range instead of 4-20 amps? Why only 4 amps is taken as lower limit and why 20 amps is taken as the higher limit?
you are on site,the plant trips,you are approached by operations,what do you do?
I have energy meter for educational project having 0.5s class but my friend need 0.2s class meter , which one is good for that purpose and what is the actual difference of that two classes , need very easy example also.??
What is Predictive Maintenance
Q- What are the application in which PNP transistor is preferred over NPN ?
what is the procedure of O2 sensor(ABB) calibration?
can any send me a forbes marshall dtron 316 manual
what is your eligibility criteria for freashers?
what does the ratio 800-400-300-200/1-1-1-1-1 in the specification of current transformer indicates?
