On drum level, why we are using air to close Control valve?
Answer Posted / sanjay k
It means we used air failed to open condition to avoide
starvation in boiler.
At any condtion water must be kept in boler and in drum.
in case air fail the valve shold open and water goes in
boler.
| Is This Answer Correct ? | 0 Yes | 1 No |
Post New Answer View All Answers
how to calibrate and troubleshooting of leveltroll?
all questions related to instrument technician in any offshore oil and gas company.
find the kp ki kd from the transper function G(S)=29.44s+04707/1.5349s2+s
State some of balance principle’ advantages?
What is the use of temperature compensation?
Can anyone convert a 5/2 way or 3/2 way valve into an ISO valve?
how to check earthing,what is minum ohms for proper earthing
How can we use feedback signal frm rtd for monitoring and in dcs for controlling ,then which type of rtd is sutaible 2 , 3,4wire and why ?
What is eddy current? Describe the operating principle of proximity probe.
What are different type of instrument cable
what is scale factor of proximitor & unit of the vibration.
How to regulate the flow of Air in 4" line, with max flow of 330 nm3/hr and Pressure of 0.5 bar? please suggest the type of instrument required.
What is hp & mp seperator .& what is its working principle ?
How to calibrate Magnetic flow Transmitter in Field
when placing a vent or drain hole on an orifice plate should you measure from the center of the bore up or down for the vent placement?