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 sliding spool valves?
how to convert cubic metre per hour to newton cubic metre per hour
If a warning lamp will operate with the ground circuit is bypassed with a jumper wire to ground, what should you check?
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.??
In turbine what does term CDP, NI, NH, HSSOC means.
How do you identify an orifice in the pipeline?
how to measure oxygen which methods are using?
How to change dcs card in online. (Dsc is maxdna)
What is the constant voltage unit?
What is standard of DCS panel design?and what is step of DCS panel design?wiring and type of connector(screw or DB connector)
what is isloted barrier how it works and what are the main purpose.how it make safe area.
How RAL(Rotary air lock)works in cement industry?
in mass flow meter what is drive friquancy ?
Describe a time when you anticipated potential problems and developed preventive measures.
What is profibus?
