how ranges is decided for drum level or dearator level,in my pplant i have seen for boiler drum range is -1000 to 1000mmwc, while for dearator -2000 to 0 mmwc ,why they decided to take this range ?

2 Answers  

---

define feed forward control loop with example and drawing?

0 Answers   Honeywell,

---

How find CGPA? when marks are 515/850 & 2559/3350. Plz any one tell me.

1 Answers  

---

what pressure transmitter?

8 Answers   Bhel,

---

what is ILD

1 Answers  

---

what is the meaning of wet leg & where is it used?

1 Answers  

---

how to calculate the total flow in square root

0 Answers   PTI, Qatar Kentz,

---

How to adjust the zero & span of a control valve from the posiitioner(MIL)?

1 Answers   Bhel, SMC,

---

What is impulse line size

3 Answers   IFFCO,

---

What is the use of GMV in turbine?

0 Answers   Hamsco, Maruti Suzuki,

---

what is the principle of vibration

3 Answers  

---

How to calibrate displacer type level transmitter (chemtrol make )for level measurement in hotwell , LP & HP heater ?

0 Answers   Matrix,

---