Answer / sivakumar.s

with feed back is called closed loop 
without feed back is called open loop

how to use level tranasmitter in closed tank application.?

3 Answers   Dalkia,

---

what is mean by process control?

4 Answers  

---

what is Instrument Schedule, and what it is mainly used for?

0 Answers  

---

explane hart protocol? what is its advantages.

3 Answers   Jindal,

---

what is installation and commissioning of (fat & sat) of power plant dcs ? this question keeps in desirable conditions of one company .

0 Answers  

---

How to make position transmitter feedback reverse i.e at valve close i want 20ma output and at full open 4ma.for the NELES positioner,model:ND8261/TS1.

3 Answers  

---

what is sequence table in DCS . make a logic in sequence table for tripping of ID fan in Boiler(in YOKOGAWA CS 3000 DCS).

1 Answers   Yokogawa,

---

what is fire and gas system?

2 Answers   Andhra Petrochemicals Limited,

---

why use on -off control valve in glove valve

1 Answers  

---

What is i/e or o/p transmitter(ma/v)?

1 Answers   Emco,

---

what is the meaning if the control valve CV is 27,in terms of selecting procedure?

2 Answers  

---

What is the difference between floating and fixed voltage?

1 Answers  

---