What is Loop Test & What is Loop Checking? Please i need answer for these questions.

2 Answers  

---

why 4ma show higher zero ? i have transmiter flow renge 0-1000 m3/h but 4 ma show in monitoring 200 m3/h and 20 ma show 1000 m3/h i want when 4ma show 0 m3/h and 20ma 1000m3/h

3 Answers  

---

why we are using analytical instrument in plant ?

1 Answers  

---

Why even multiple power supplu r used in instrumentation system?

1 Answers   Honeywell,

---

If we increase D what will be the controller action?

2 Answers  

---

---

Anybody can tell me  how to convert mmHg2o /psi to scfm  please give me formula of conversion

0 Answers   Samsung,

---

Can any one send me IOCL instrumentation question papers.. i dont know the pattern of the questions and what to prepare can any one help me on this .. my email id is anwarnishil@gmail.com

0 Answers  

---

how the transmitter send MA?

1 Answers  

---

Why does a pressure gauge installed on reactor, doesn't have any vent line below to release the pressure? Is it any kind of designing mistake or it actually does not require any vent line? And if it does not require any vent line below it then how we are gonna release the pressure built inside the pressure gauge?

0 Answers   Process Control Technologies,

---

is motorized valve closed when power shutoff?

0 Answers   Unilever,

---

what is the importance of CV in the control valves? how it is calculated?

0 Answers  

---

In 16' pipeline one pcv is installed which is controlled by PT installed at inlet of PCV.If Flowrate in pipeline increases what will happen to pressure at the inlet of pcv.

5 Answers   Essar, vssc,

---