Answer / nil patel

PLC is a control system through which u can control the process parameter in the entire plant.

Answer / dattatray nikam

PLC:Programmable Logic Controller.

Name itself indicate that one can program their logic into
controller to performs sequential operation.

Answer / welcome4ujd

A programmable controller is defined as a "digital
electronic device that uses a programmable memory to store
instructions and to implement specific functions such as
logic, sequence, timing, counting, and arithmetic to
control machines and processes"

Answer / chandradhar

plc is a programmed interface between field input's and
field output's.
field input's for example sensor's, swtiches,pushbutton's
etc.. and
field outputs like motors, drives,solenoid valve's, etc....

Why 4ma - 20ma signal used in instrumentation??

5 Answers  

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how to calibrate transmitter

3 Answers   Sabic,

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While preparing the graphic diagrams trend display, 3 types of trends are prepared by Yokogawa system vender. These are for process variable, manipulated variable & set point variable. Why these 3 trends are required? Explain the purpose of these 3 trends.

1 Answers  

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

0 Answers   CCIE,

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hi sir yhis is zahid ali i am preparing for the jspl at oct.4.please send me the recently updated sample paper.

0 Answers   Jindal,

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GWR radar transmitter working principle?

2 Answers   Tata Steel Limited,

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What is difference between reset and initialization in system.

1 Answers   Marafiq,

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What unit is used for measuring comp. outlet flow. it is CFM, M3/hr or NM3/hr. ?

5 Answers   Jk Tyres,

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how to calibrate 0- 150 psi presure gauge by dead weght tester

0 Answers  

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HELLO FRENDS ,, I M IN THE MIDST OF TROUBLE .. JUST LITTLE HELP ME... SUPPOSE ,, I HAVE A CLOSE VESSELE TANK ( HEXANE MEDIA ) ,, I M USING ROSEMOUNT 2051 DPT FOR LEVEL APPLICATION .. ITS CALIBRATE RANGE IS.. . 0 TO 950 MMH20 ..I DID CALIBRATED DPT WITHOUT REMOVING IMPULSE LINE OF HIGH AND LOW TAPPING.. & WITHOUT DISTURB 3 WAY MANIFOLD..!!! BUT ,,, DURING CALIBRATION I SELECT RANGE BY HART LRV IS 900 MMH20 & URV IS 1300 MMH20 ,, BUT ,TANK LEVEL SOMETIMES 100 % AT 1100 MMH20 , SOMETIMES 1300 MMH20 ..IN THIS CONDITION .. WHOLE LOOP FAILED ,, MAIN THING IS THAT ,, HOW TO CUSTOME RANGE SELECT ?? AND IF I USED RANGE OVER THE ORIGINAL CALIBRATE RANGE ,,,THEN WHAT ERROR WILL BE COME ??? HOW TO ZERO CALIBRATION OF DPT... HOW TO ZERO TRIM BY MANIFOLD ?? AND FOR TANK LEVEL PURPOSE ... WHICH UNIT I CAN USE ??? IS THERE ANY CALCULATION OR CALIBRATION .. IF YEH .. THEN PLZ JUST GIVE ME CALIBRATION STEPS FOR DPT.. THANKS YOURSSSSSSS

1 Answers   Torrent Pharma,

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what is the difference between 2 wire and 3 wire RTD- application wise,cost effectivity?

2 Answers  

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steps for installing orifice plate?

0 Answers   Bhushan Power Steel,

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