Answer / jazz

Use a smart communicator device such as HART
calibrator/communicator. Connect it across +/- terminals,
whether in the instrument, junction box, marshalling, or
system cabinet, then initiate communication with the smart
transmitter. If you calibrate on-line, the HART communicator
will ask you to put device in manual, and advise control
room that you are calibrating the HART transmitter. Using
the HART communicator use loop/calibrate function and
simulate, 4,12,20 mA corresponding to 0%,50%, 100% of level
or pressure.

what are the levels of automation?

1 Answers  

---

If we increase only P what will be controller action ?

0 Answers   IMECO,

---

Explain the working principle of lvdt?

0 Answers  

---

How does a redundant controller comes in line when the main controller fails??

3 Answers   Yokogawa,

---

difference between DCS @ SCADA system? and how can use in field

5 Answers   Marafiq,

---

what is mean by TDC-3000

5 Answers   ADCO,

---

In power plant to measure vibration of a turbine we install sensors. Before install this sensor we have to set gap voltage. What is meant by gap voltage and its use?

0 Answers  

---

Explain " FAIL SAFE " feature in temp. measurement.

1 Answers   Bapco Bahrain Petroleum Company,

---

Manipulation of dead wt. tester double piston type.

0 Answers   CCIE,

---

1)how we calculate the drum level? and how we select the transmitter range?

3 Answers  

---

What is the load line in control valve?

1 Answers   IFFCO,

---

What is TMR

3 Answers  

---