Answer Posted / azmat

To calibrate a valve first check the input signal range if
it is 0.2 to 1.0 Kg/cm2 or different.
Calculate the span ( Difference between higher limit to
lower limit=1.0-0.2=.8 ) Now divide it in four equal parts
that is 0.2 Kg/cm2 this is 25% of the span.
Now check the valve travel like 2 inches, 3 inches or any
other value Divide it in four equal parts 25% of the travel.
Apply 25% of the span value+ 0.2= 0.4 Kg/cm2 it is 25% of
travel and apply full span value and see you get the
complete travel if you find difference adjust the spring
accordingly.

Why is it necessary to use compensation leg to measure the liquid level in a closed or pressurized tank?

2520

---

Calibration procedure for electro magnetic flow meter

2041

---

principle of automatic votage regulator

2185

---

how to work MIL contol valve posistioner ?

2194

---

What is the exact differences between HART,FOUNDATION FIELDBUS,PROFIBUS?

3525

---

What is the difference bitween control net scaner and device net scaner

3630

---

Sir, I want junior executive, Instrumentation question papaer for IOCL, Plz send to arabinda.ghosh83@gmail.com

2379

---

hi sir yhis is zahid ali i am preparing for the jspl at oct.4.please send me the recently updated sample paper.

2224

---

Please asked me How calculate DCS controller memory.

2826

---

if my flow is 20000 m3/h than which range of DPT i have to use????

1874

---

control panel design guidelines

3451

---

In apron feeder how TPH is calculated?

1787

---

TECHNICAL/ARTITUDE

2298

---

How to Calibrate Vortex Flow transmitter in field

1326

---

what is temperature compensation?

5525

---