Answer Posted / murali -inst.technologist

if range of transmitter changes in field you have to change
the span of the AI in dcs
other wise
transmitter shows correct reading in field side
but dcs get signal in form of 4-20 ma, then flow reading
shows in DCS is as per old DCS span.

How a conductivity sensor & analyzer work at boiler, whats the principle & science is beyond this,How conductivity sensor sence & convert signal & move toward analyzer & analyzer show reading in percent? also what is temperature compensate option in conductivity analyzer

2314

---

why any measurement made interms of pressure is more accurate ? to be more precise most of the flow velocity is made interms of pressure and it is accurate. what is the reason behind pressure measurement being accurate ?

1419

---

what effects a surging can produce in the compressor

1474

---

How d.p. Transmitter can be applied to close tank?

610

---

What is the use of temperature compensation?

1555

---

---

For what reason would you possibly be compelled to make use of a Smith Predictor. Explain the idea behind the operation of this device.

1506

---

use of split range ? where it is used ? in which control loop it is used ?

1486

---

1.what is controller proportional gain 2.what is the controller intergral action time. 3.A proportional plus derivative controller that has a proportional band of 20% and a derivative action time of 0.1 minutes. Construct the shape of the output waveform for the triangular input if the input rises and falls at the rate of 4 units per minute.

2223

---

Give 2 application of quartz crystal used for process parameter measurement.

1583

---

please send the sample qustion paper for iocl written test ..

3298

---

Why are the uses 24vdc in industries

503

---

PLEASE PROVIDE SAMPLES OF CHEVRON SKILL TESTS

3463

---

How the warning lamp of a charging-system is activated ?

2164

---

how to design orifice plate?what is the equation?

1632

---

how to control pid

1457

---