Answer / md altaf

If your ccontrol value was nonlinear 1st you check the strock was set same(set back side of your positioner) as your control(wrriten on your control valve body).
2 and step was after equalise the stock then you adjust span and zero.
After you set the span and zero the control valve was working in normal condition.

Answer / carl_ellis

The positioner is configured for quick opening, equal
percentage, or some custom non-linear characterization.

Carl Ellis
Measure First

How to calibrate and check thermal mass flow meter of Make thermal instrument company inc model 60?

1 Answers   Wood Group,

---

plz exlain the dcs system of ABB sympony hamnony

1 Answers  

---

what is the diffrene between DCS System and PLC System

5 Answers  

---

What is the load line in control valve?

1 Answers   IFFCO,

---

what is temperature compensation?

1 Answers  

---

who's take first position in process in the timing of new installation flow transmitter and control vavle. give the answer with logical trick.

2 Answers  

---

What is rated capacity in Control valve

3 Answers  

---

in current transmitter why we use 4-20ma ???

2 Answers   IMCO, IOCL,

---

what is dedband in instrumentation ?

3 Answers  

---

what is purpose of three way manifold valve using for dp transmitter

1 Answers  

---

How digital input and digital output 's are working in dcs

0 Answers   BBV, Indiabulls,

---

Somebody tell me in what way i need to prepare for csio pgrpe(adv instrum eng)interview?what all the quest can i expect?

0 Answers  

---