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 far the two wire transmission (loop power) maximum distance suitable?

2 Answers   PCIL,

---

i have D.p. transmitter of range 0 to 2540 mmWC, i want to use this for flow measurement (0 to 500 ltr/hr.) what should i do?

9 Answers  

---

HI THIS IS NOOR AHMMAD.SHAIK, I AM WORKING IN INSTRUMENTATION MAINTENANCE Dept. in BOILER HOSE(BHEL HYDERABAD),,any other persons are working in same dept. i want some HELP in my subject

1 Answers  

---

can you send remote seal interface level transmitter calculation steps for oil water saperator.

0 Answers   Sasol Firm, Thermax,

---

What is input and output of vaiberation transmitter and what is its unit.

4 Answers   SMH,

---

can you suggest good traning institute in instrumentation ? (in automation, or designing)

5 Answers  

---

what is maximum vaccume?

4 Answers  

---

please tel me the calibration of pneumatic controler.

0 Answers  

---

wht is dcs architecture ? can u give example?

3 Answers  

---

Explain about 4 wire instrument concept & tell about its wiring fron sensor in Field to PLC panel.Explain with an example?

3 Answers   IOCL,

---

What s the exact height of installed transmitter?

1 Answers  

---

Q- Why Phase tester is only used for checking AC not DC ?

1 Answers  

---