whatis diference between zero pressure and obsolute pressure

1 Answers   ABB,

---

What is NAMUR standard and why its allways reletad with Sollenoid

2 Answers  

---

What is deffrence between Battery and capacitor

3 Answers   Siemens,

---

why vortex flow meters and electro magnet flow meters are used in water treatment plants

1 Answers   Elite Construction,

---

Hi buddies! my name is sachin and i am working as a electrical and instrumentation engineer in a paper plant. right now i am facing a problem and if someone could help me it will be an immense pleasure to me. i am using AC 800M to synchronise DCS500 drives on paper machine and rewinder.communication is on PROFIBUS and we are using NPBA-01 module to link profibus to DC drives.But these days two of these drives are showing a error named FIELDBUS COMM.TIMED OUT and the drives get tripped.I have changed the NPBA module and PROFIBUS cable.So if anyone can do please help me out with this problem.I'll be highly grateful.

0 Answers  

---

---

I want measure the volumetric flow of gas in waste heat recovery Boiler?Tell me how and which type of instruments required. Plz mail me:naba02222@gmail.com Sam please post the answer .

0 Answers  

---

In control valve there are two type of valve seat we can use metal to metal seat & soft seat.On this valve seat i have following doubt. 1)I have never seen practically the internal assembly of valve so my doubt is that basically weather the seat is soft seat or metal its basic MOC is same as valve body(SS or CS) only in soft seat we are using PTFE ring & place on valve seat & in metal this PTFE ring is not threr am i correct??????? 2)what are the common general rule for using metal to metal seat & soft seat,means its depend on process parameter like liquid,gas, steam & on valve leakage class.

1 Answers  

---

what is stroke check for field instument transmetter's & AOV's

0 Answers  

---

how pressurize drum calibrated ?

0 Answers  

---

what is performance test.need defination

0 Answers   Takreer,

---

what is dry leg and wet leg in transmeter calibration?

3 Answers  

---

why we use impulse line of flow transmitter at 45 deg. angle both side of orifice plate.

0 Answers  

---