Answer / nilesh

Normally there is a P&I( Process and Instrumentation)
diagram not E&I diagram.In P&ID circle symbole related to
field mounted instrument while Square box with circle
inside is related to function in DCS.There is number of
other symbole in each catagory.

Answer / ganesh prajapati

In P&ID, ESD signal is represented by a triangle with ESD
mentioned inside a triangle.

Answer / d das

ok mr. nilesh. but which one is ESD signal how should we
know? in a P&ID drawing.

principle of rtd

4 Answers  

---

what is the resource block mode in foundation field but ? what is advantages for this

1 Answers  

---

How to convert ma to mv? Resistance 250 ohm is connected in series or Parallel?

3 Answers   ISRO,

---

Calibration procedure for water rotameters

0 Answers   HPCL,

---

what is the difference between attemperator and desuperheater ?

0 Answers  

---

What is surge in compressors? How to detect and control it?

1 Answers   DEWA,

---

what is the differnt between open loop and close loop ?

5 Answers   India Cements,

---

what is Micro-switch and where it is used......?

7 Answers  

---

What are the type of bonnets in the control valves?

0 Answers   CCIE,

---

Why we use 4 - 20 ma?

6 Answers   IJT, ONGC,

---

what is the difference between sensor and tranducers?

12 Answers  

---

calibration of instruments.

11 Answers   ONGC,

---