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.

what's meanning of 1250KVA and how to calculate with Volttage and Current. answer give with example.

3 Answers  

---

What is the difference between rich gas and lean gas?

3 Answers  

---

What is an instrumentation amplifier? How is it better than a differential amplifier when handling outputs from a wheatstone's bridge?

2 Answers   Honeywell,

---

How to calibrate radar type level transmitter for interface level? Total liquid(liq.1 and liq.2), level both the liq individually? For. Both the liquid levels how the signal will go from transmitter to dcs? How to calibrate. Single radar 9:26:55 AM for 2 different liquids in a tank?

0 Answers   Almeer Technical Services,

---

Any one can help me to identified, how can we interchange the device in FF

0 Answers   Ion Exchange,

---

What for barriers are used in DCS & PLC systems?

2 Answers  

---

How to convert m3/hr in tonnes/hr

2 Answers  

---

What is exact difference between the panel earthing and system earthing in DCS system. What is the value of resistence.

0 Answers  

---

what are the basic instructions used in simatic s7-300 plc?

5 Answers   Dr Reddys, HZL, Siemens,

---

which types of oxygen analyzer describe with drawing ?

2 Answers  

---

what is exat meaning of compentation in RTD ? what diffrent between 2 wire,2 wire and 4 wire RTDs?

2 Answers   Atul, Vardhman,

---

What is the use of GMV in turbine?

0 Answers   Hamsco, Maruti Suzuki,

---