Interested to Buy Any Domain ? << Click Here >> for more details...
can a control valve works without positioner?why need
tunning of c/v?
- 4 Answers
- 8542 Views
- I also Faced
- E-Mail Answers
Answer Posted / goutam chatterjee
first of all we cant say any valve as a control valve with
out positioner... because we know that control valve is a
final control element.. we only say any valve as a control
valve when its acted as percentage operation as per process
requirement. with out positioner this is acted as a simple
on off valve... because percentage opening not possible with
out positioner... & we need to calibration the positioner
because cv alwys maintain the process in aspect of its final
contron ability.... i.e if process need to open the cv 25%
if the positioner not calibrated then it may be open 30 or
10 % for example... thats why we need to calibrate the
positioner.....
| Is This Answer Correct ? | 13 Yes | 1 No |
Post New Answer View All Answers
In Safe Guarding test what means by "Failed to Danger" ?
we want to control pump in let pressure and tank (for exp) our inlet line if water cam and pump will on and when our tank will full pump will off also if our inlet pressure low pump will off even tank not full.this pump i want to uses on our water supply line.
what is the advantage of submersible level transmitter compare to ultrasonic level transmitter?
What are the different types of thermistors used in industries? How to the operation of typical thermistor?
2. What is ultrasonic flowmeter?
What is the exact differences between HART,FOUNDATION FIELDBUS,PROFIBUS?
Valve positioner and actuators in detail.
How many ohms are required for proper earthing?
detail of mass flow meter pricipal
why Fahrenheit unit of moistur analyzer transmitter
what is the usage of QDV & VOLUME BOOSTER
hi i am eswar i want to know the instrumentation interview questations for eil(engineers india ltd) i have applied for engineer post in eil please help in this.my mail id eswar310@gmail.com
What is Predictive Maintenance
what is the process to make control schematic ?
HOW TO CHOOSE FREAQUENCY IN FMCW TYPE RADAR INSTRUMENTS. DESIGN BASIS OR DESIGN CALCULATONS ?
