Answer / rajesh

PID tuning implies the setting/ configuration change required to make so that our feedback system is 100% accurate . in practical cases it will attain max of 80% accuracy .

it is nothing but changing the values of kp ki kd so that our system is linear/properly responding .
the values are theroetically calculated using trial and error method .

Answer / tyrkrv83

Choosing the proper values for P, I, and D is called "PID Tuning".

I have observed in field instrumentation work... I remove the fuse of an analog transmitter then it shows 7.75 kg/sq cm (which is practically wrong value)in DCS and when put the fuse it shows 0 in dcs. Then cheach the field transmitter termination and found moister. clean that and then it shows 1.1 kg/ sq cm which is right value. Please describe the above phenomenon.

1 Answers  

---

During the design and engineering of a process plant, a good designer should plan for ____________, ___________ and ____________ aspects of the plant

1 Answers  

---

describe yourself?

1 Answers   TCS,

---

Definition of reverse and acting controllers:

0 Answers   Monnet,

---

if my flow is 20000 m3/h than which range of DPT i have to use????

0 Answers  

---

How do you measure g's?

5 Answers   Aramco, GNFC, HPCL, Polmon, Thermax,

---

THE OUTPUT OF A CURRRENT TRANSMITTER OR A PNEUMATIC TRANSMITTER HAS A LIVE ZERO?EXPLAIN

2 Answers  

---

how to calibrate the temprature transmitter MURCREYtype and thermocouple input type.

1 Answers   Shree Cement,

---

How many input(Analog and digital) and outputs(Analog and digital) are there in DELTA v DCS Version 7.0?

2 Answers  

---

the 3 most common transmitter protocol being in refinery or qatar gas and aramco.

0 Answers   Shell,

---

If I want to buy a pressure switch & 3-way valve for hot water application then witch parameter I should consider.

1 Answers  

---

What is mean by Ethernet, Device net and Control net? For what application we are using these?

4 Answers  

---