Answer / mnb

For open tank you just connect HP side to the bottom of the tank and vent LP side to the atmosphere.
Head pressure becomes liquid level .URV=Height*specific gravity (H*SG) and LRV =0.
For closed tank, use dry leg for non condensate liquids and use wet leg for condensate liquids.
Dry leg-connect HP side to bottom and LP side to top of the tank. LRV =0, URV= H*SG.
No need to bother about pressure inside the tank because it acts upon both sides equally.
Wet leg- connect Hp side to lower tapping and LP side to upper tapping and fill the Lp side with process liquid.
LRV=h2*sg
URV= h1*sg-h2*sg.
h1= level of liquid at HP side
h2= level of liquid at LP side.

what is difference between OP AMP and differential amplifier?

5 Answers   TCS,

---

how its work inductive proximity sensor explain briefly?

1 Answers  

---

why bevelling is done in an orifice ?

4 Answers   ABB,

---

What does a fire detector detects?

4 Answers   GAIL,

---

what is dc moter.

0 Answers   Jindal Steel and Power, Lupin,

---

where uses EXe /EXd/Exo/Exn/Exp/Exq/EXia

0 Answers  

---

How we will check whether the proximity, which we have is either NPN or PNP, if no data sheet or manual or any details is available to us ???

1 Answers  

---

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

1 Answers  

---

What is DCS?

4 Answers   GAIL, Sabic, Trident, Yokogawa,

---

Yokogawa mass flow meter shows negative reading...what r the main causes for this problem?...

3 Answers   IOCL,

---

Which mechanical device is used in pressure gauges to reduce pulsating

4 Answers  

---

What are the uses of orifice plates?

0 Answers  

---