Answer / parth desai

if PLC power failure then whole process will stop.As one
power module for Whole I/O Card.and CPU also working on 24v
DC so as power failure your PLC will in STOP Mode.

Answer / raja

yes but redundancy is provided for PLC . the PLC nearest to
the failure region will take control over the failed one .
in some cases central room is also used to take control

why 4 to 20 ma? why cant some other range?

3 Answers  

---

how can we tune a PID. If it is by zeiger nichols method..please explain briefly with help of an example.

0 Answers   KNPC,

---

generally transmitter power supply having some range(12v to 35v) but the out put(4-20 mA) must same for given input.If we vary the power supply voltage then output mA also to be change according to V=IR. Is there any voltage regulator in the transmitter ?

1 Answers   Indian Steel,

---

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  

---

To become an Instrument DESIGN engineer, is there any softwares or training to become Instrument Design engineer, plz suggest me, Iam very much interested in designing.

0 Answers  

---

---

WHAT IS THE MASS FLOW FLOW METER

4 Answers   Reliance,

---

Name different parts of a pressure gauge. Explain the use of hair spring in the pressure gauge.

0 Answers  

---

i want to Measure the Difference pressure of Packed distillation Column of height 3 mtr. h.p. side connected to bottom & L.P. side connected to the top , so tell me what will be THE URV & LRV of that D.P. transmitter?

5 Answers  

---

I installed the smartplant instrument v8, but can not be opened, that always said: "INTools 2007 hardlock no found". So Could you help me how to do for that?

0 Answers   SRAAC,

---

how can loop single 4-20 ma to two isolation amplifier? i mean i have two isolation amplifier with 4-20 ma input and 1-5 v output.can i done series connection ?

1 Answers  

---

What is the purpose of valve positioner. Explain 4 uses.

2 Answers   SRACO,

---

what is ILD

1 Answers  

---