Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / m.v.ramesh
There are yes and no answers of this query.
correct answer is Yes. Most of the answers are Yes but
Explanation is a bit not clear. Yes offcource valve
positioner has lot of usages and advantages in controling
the valve position.
Answer no 8 is some what clear.
Here is the straight right answer.
"Yes we can use a control valve with out positioner when
bench set of the control valve is matching with the
standard bench set of the valves." ie, valve spring range
is 0.2 kg - 1 kg. where the process fluid is clean, and for
the valve sizes below 1 inch usually.
Where these valves need regular preventive maintanence
(lubricating and changing the packings promptly or else
these valse will give erratic positions).
| Is This Answer Correct ? | 15 Yes | 5 No |
Post New Answer View All Answers
How can you add value to this Industry if offered the job?
Give 2 application of quartz crystal used for process parameter measurement.
you must show the examples application and give at least 4 types of transducer/sensors that can minimize the failure during the manufacturing of the resistors.
what deference between panel earth and systemearth
the 3 most common transmitter protocol being in refinery or qatar gas and aramco.
IS there any effect of vortex in low pressure side of the transmiter after the orific in feed water line? if yes then what is the calculation?
what is use of communication wire in multipare cable(oil and gas field), why this communication wire not used in single pair cable?
can u briefly explain aboutan aryton shunt multirange DC ammeter?
How to calibrate Field bus transmitter? procedure ?
why I need valve guard and whats different between guard and positioner ??
what is thermo coupler and how it works
What is the function of solenoid valve in on/off & shutdown valve and why it is not used in control valve normally?
Why mixer nd grinder Is example of constant torque load not variable torque load ???
What pressure results for a flow transmitter of range 0- 180t/h in the dcs and 0-301mbar in the field using square root extraction. Kindly also suggest formulae for the percentages 0,25,50,75,100?
a flow transmitter [range-0-400mbar] connected in process line. please explain me how to calibrate the flow transmitter , & how to do static error
