In closed loop control there are several “blocks” used to show the interactions between the process and the control system. These blocks are referred to as the “process” and the “controller.” Describe the relationship between these two blocks when creating a well tuned control loop.

1 Answers  

---

How to work mass flow meter ?

1 Answers  

---

I want to know if flowrate increases in 16' pipe line what will happen to upstream pressure and why?

1 Answers  

---

wht is snap action switch?where it is used?is there any diff between snap action switch and normal pressure switch?

1 Answers   ONGC,

---

what is the basic principal of vertax flow meter

3 Answers   Balrampur Chini Mill, Saba,

---

---

Waht is surge in compressors and how to control it?

1 Answers   DEWA,

---

Why 4-20mA SIGNAL IS PREFERRED OVEA A 0-10v signal?

5 Answers  

---

how to convert transmitter milliamps output to like temp,pressure etc.....

5 Answers  

---

why we use cascade control and feed foreword control in 3 element control of boiler drum ?what is feed forward and cascade control system ?

0 Answers   Visa Steel,

---

How to Calibrate Level Switch in field

0 Answers  

---

can you give some devices that measure directly the mass flow rate.

1 Answers   Takreer,

---

ABB DCS (AC 800 M)redundency take howmany milliseconds to switch from master controller to slave?should be less than DCS scanning time?

2 Answers   SCS,

---