Answer / kush rao

SCADA
A SCADA (or supervisory control and data acquisition) system. It consists of many remote terminals units for collection of data (field),that is being connected with master station through any communication system, having main task of collection of accurate data and controlling of process for smooth operation.
DCS
It stands for distributed Control System, controlling is performed by embedded system (Microcontroller based or Microprocessor based controlling unit for device or instruments from which data is to be collect. It provides very intelligent analog control capability. It is very sensitive for HMI (Human machine Interface) for easy and smooth control of process.

PLC
It stands for Programmable Logic controller, having get this name from the fact that it replace the relay logic at the initial stage then it get the capability for analog channels also for display then it get the ability for close loop control and after some time it has the ability for redundant operation, and also its HMI having the ability for Indicatiion,controlling,data logging ,Alarming and backup data facility. It is also defined as below:
“A digitally operating electronic apparatus which uses a programmable memory for the internal storage of instructions for implementing specific functions, such as logic, sequencing, timing, counting and arithmetic, to control through digital or analog input/output, various types of machines or process.”

Sitrans LR460 Radar level transmitter getting level out or disturbed level during moisture present in the material ie coal in the pccb bunker in CHP.Any suggestions for this problem...????

1 Answers   ABG Shipyard,

---

Can anybody tell which type of quections are asked in interview for projects? plz give its urgent.....!

2 Answers  

---

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

1 Answers   Shree Cement,

---

How works weighfeeders in cement industry? what is the working principle?

0 Answers  

---

What is first echo & echo window in radar type level transmitter?

0 Answers  

---

what is thermocouple output

7 Answers   IPCL,

---

what is Dry Leg calibration and where is it used

1 Answers   Petrofac,

---

Explain the working of an enraf level gauge.

0 Answers  

---

what do u mean by 2/3 soleniod valves?

8 Answers   Nile Sugar,

---

Draw a P& ID showing – orifice flange, plate, dp transmitter, isolation & bypass valves and tubing.

0 Answers   CCIE,

---

explain the working of Coriolis Flowmeter.

2 Answers   ABB,

---

What is voltage regulator?

0 Answers  

---