Answer / navodit

whenever there is close tank, there is vapour which will
condensate in top taping tubing(LP taping), which will
remain there even after empty tank, that time output
pressure will be in negetive(as HP taping is empty and LP
taping has filled with condensate), as LP line is filled.
so negetive will shove 4 mA at negetive value

Answer / varma

In Closed tanks vapour condensates and accumulate in LP impulse line, to eliminate this problem glycol will be filled
in LP impulse line. The positive head pressure which is created by the glycol density and the height of the LP impulse line has to be suppressed. For example LRV and URV are 0 to 750mmh2o, 750mmh20 of positive head pressure to be substrated for each value then u will get the value of LRV and URV as -750 to 0mmh2o.

can anyone tell me about the basic concepts to consider before to start a PLC panel wiring

0 Answers   ABB,

---

what is the difference between hub and switch?

6 Answers  

---

Why do we floating DC in DC system.

0 Answers  

---

WHAT IS THE Differance b/w on/off & pid control valve?

10 Answers  

---

how pressurize drum calibrated ?

0 Answers  

---

How can corrosion alter the accuracy and precision of a C- Bourdon tube pressure gauge?

1 Answers  

---

Explain the combusion chamber

0 Answers   IFFCO,

---

In bently nevada vibration monitoring system,what is the reason to maintain the Resistance of the probe + extension cable equal to 95 ohm? If possible explain the basic principle of measurement with detail electronic circuits.

0 Answers   Essar,

---

I have a problem with a valve (air to close). When it is fully closed and try to open 1% it doesn't responce till 3% open suddenly more than 3% then back to 3%. I tried to tune positioner then removed it, the problem still exist. Any idea

3 Answers  

---

Yokogawa dcs nodes advantages?

0 Answers   Petrochemicals,

---

what is the difference between profibus and controlnet networking.

0 Answers   HZL,

---

For a diafhram 1.5 d =kn(p-p0) D4 Where d in deflection in inch k=constant n=no of capdule (P-P0)=Applied pressure in psi D In active dia at capsule. -1.5 d=k to p d being constant -1.5

0 Answers   L&T, Shiv Tech Marine Control,

---