Answer / ajaya

With a smart positioner ,we can calibrate it at field without HART .

Answer / arunkumarsandu

Which is having inbuilt i/p converter and feedback in an single positioner...

What should we do when Fisher Fieldvue DVC2000 give some out put air at 4mA bt at that i need no out put

1 Answers  

---

what is meant by Hydroelectric powerplant?

0 Answers  

---

relation between level and differential pressure.

3 Answers  

---

What is cavitation. what is the effect of it on control valve and how is it prevented.

1 Answers   ADMA OPCO,

---

Tell me about PID Tuning and what is PID.

4 Answers  

---

i want to make project on process control using plc.please give me idea about this.

2 Answers  

---

Why we use the remote seal transmitters

1 Answers   Oil and Gas Jobs,

---

how u calibrate pneumatic n motorized c/v?

0 Answers  

---

In control valve there are two type of valve seat we can use metal to metal seat & soft seat.On this valve seat i have following doubt. 1)I have never seen practically the internal assembly of valve so my doubt is that basically weather the seat is soft seat or metal its basic MOC is same as valve body(SS or CS) only in soft seat we are using PTFE ring & place on valve seat & in metal this PTFE ring is not threr am i correct??????? 2)what are the common general rule for using metal to metal seat & soft seat,means its depend on process parameter like liquid,gas, steam & on valve leakage class.

1 Answers  

---

how to calibrate motorized operated valve?

1 Answers   Bilt, Jubilant, SRF,

---

What should be hight of CONTROL panel for access & OPERATION What is BIS & INDIAN STD for SAME?

3 Answers  

---

Can a pneumatic control valve work without positioner?

4 Answers   SMC,

---