Answer / manoj

If the difference between the Set Point and the Process Variable is directly proportional to the Controlled Output to the valve, then it is direct acting.

If both are inversely proportional then it is reverse acting valve.

Answer / nagesh

Output = SP-PV ------ Reerse acting
Output = PV-SP ----- Direct acting

WHAT IS THE MASS FLOW FLOW METER

4 Answers   Reliance,

---

please send me gail format if u have... please help me if u can...

1 Answers  

---

Control valve question what is the meaning of cauge.?what is the use of cauge?

1 Answers  

---

Explain the working principle of variable frequency drive?

0 Answers   ABB,

---

what is procedure of calibration of remote seal transmiter, botom to top flanch 850mm, fluid liquid density .73, transmiter fixed on a fractionation colum, under vaccume 10mbar

4 Answers  

---

what is the difference between DELTA-V & FOUNDATION FIELD BUS

4 Answers  

---

suggest a sensor to measure rapidly varying temperature?

1 Answers  

---

Senior engineer's please help me, what is Loop Checking and Loop test? and write difference also? soon urgent

0 Answers   Kentz,

---

What is paid how it works

0 Answers   KOC,

---

which type of signal used in instrument?

3 Answers   Emco, Makson, Sail, TATA,

---

while stroke checking of a linear control valve ,found its travel is in non linear ,what can be possible reason ? ( please answer send in mannanali65@gmail.com) pls pls pls if any body know

2 Answers   JAL International,

---

How can I read the electrical drawing easily?

2 Answers   Plot Enterprise,

---