Answer / venky

Comparing test instruments with standard instruments.

Answer / chandrakant sahu

Calibration is most important & heart of any process instrument. There are many definition for calibration i am also trying to describe it a calibration is a process where a known value is applied to the instrument which is under calibration from the master instrument at various step in suitable temp and environment. Repeat & reproductive of process and note down the output.If Output come as same the input of master instrument instrument is ok otherwise set the zero & span and repeat the process

Answer / santhoshnarayanan

Calibration; To check and correct the instrument with standeread test instruments.

Answer / hiren

Calibration procedure is verification of responds of instrument device against the non standandard instrument.

Answer / ahmed

Calibration with several meanings
Which bargains
And Budget
But in filling devices come on the first test of the device and make sure it works in good through Thath in an environment special process
In this case, we adjust all the data it through the Hart and make sure the capsule works by pump pressure and make sure electronic unit through the power unit
All of these tests are done on the basis of Data cheet

Answer / raja

Simply span and zero adjustments

Can anybody tell me the exact explanation for Functional calibration?When it should be done on process or on lab? Advanced Thanks

2 Answers  

protection relay watchdog contact operation?

0 Answers   L&T,

If hart communicator provide 4-20ma source to any transmitter during the callibration?

3 Answers   Hyundai,

components of control circuit belongs to control valve

0 Answers   KOC,

pls suggest suitable MOC of diaphragm for pressure measurement of UREA grade solution service fluid.

0 Answers   Siemens,

in instrumentation why we are using 4-20mA , why not voltage ? if somebody design a instrument which works on voltage then can we use that instrument?

6 Answers  

you are on site,the plant trips,you are approached by operations,what do you do?

0 Answers   ABB,

what is the procedure for auto tune in masoneialn 12300 series displacer type transmitter?

0 Answers  

i am working in the automation company...i want to just know how actully pid control valves are tune????...

1 Answers  

what is meant by calibration

20 Answers   Exxon Mobil,

why we use casced loop

6 Answers  

Is there’s power on the bus (if so, state whether on the signal bus, or on a separate in the following: a) HART b) Profibus DP c) Profibus PA d) DeviceNet e) Foundation Fieldbus

1 Answers   EIT,