Answer / samir

The Control valves is used for auto loop control of pressure, flow and level. So if we use it's a pressure control valve then desired set point should be pressure of the system. Similarly for LCV & flow control set point is Level & flow respectively. Here should be consider one thing the same CV can't used in three application as because of others parameters are varied to system wise.

Answer / praveen kumar

flow is called the substance of liquid which travels from one point to another point.
pressure is called travelling liquid have a force that is called pressure
level--> travelling liquid finally stacked on single vessel or drum that is vessel....
`

Answer / pavan

Controlling is
main..which
parameter we are
going to
controlling.for
example we are
controlling pressue
through valve than
that valve is known
as pressure control
valve as similar also
for other
parameters.

what is the basic principal of vertax flow meter

3 Answers   Balrampur Chini Mill, Saba,

---

Ega interview going on for power plant. Which type of question will asked. For questions

0 Answers   EGA,

---

What is Loop Test & What is Loop Checking? Please i need answer for these questions.

2 Answers  

---

I want to know if flowrate increases in 16' pipe line what will happen to upstream pressure and why?

1 Answers  

---

Why we use the double acting control valve in flow line?

3 Answers  

---

What is diffrence between Transducer and Transmitter?

13 Answers   Ford,

---

Calculate the maximum pressure drop that can be allowed to occur across a control valve, so that we can prevent cavitation / flashing from occurring. Use the following formula: Δ P allow = Km (P1 – PvapourA) where, Δ P allow - the maximum allowable differential pressure for sizing purposes, or terminal pressure drop; Km- the valve recovery coefficient from the manufacturer’s catalogue; P1 - absolute inlet fluid pressure; PvapourA - absolute fluid vapour pressure at the inlet temperature; Use Atmospheric pressure = 101.3 kPa, P1 = 1200 kPa(g), PvapourA = 4 kPa, KM = 0.72

0 Answers  

---

what is KV and XV valve

0 Answers  

---

How works weighfeeders in cement industry? what is the working principle?

0 Answers  

---

1,why we use 4-20 ma output of all instrument qhy not use 0- 20, 2,what is the different between PLC & DCS. 3,how can we meaure maximum span of new flowmeter if not given any information.

4 Answers   Reliance,

---

Qatar fertilizer call me for interview as Instrumentation Project Engineer. Please let me know what kind of question they asked ? ALso they said they will take Written test, any idea about this written test ?

1 Answers   QAFCO,

---

can i use 1 sq mm insted of 1.5 sqmm cable cable length 600 mts under ground laying Cable carrying 24 vdc 4-20ma current

2 Answers  

---