Answer / gomathi sankar

Calibration of instruments is nothing but comparing the
actual value of the instrument which u use with the
standard value of that instrument model.

Answer / raffi

Calibration procedure:
calibration equipment: calibrator with handpump
For ex: Range of Transmitter is 0-100psi

Step1: connect the calibrator to the transmitter
Step2: connect the multimeter in series with transmitter to
verify the transmitter o/p in mA
step2: Apply the pressure to the transmitter by hand pump
in calibrator
Step3: compare whether both calibrator and the transmitter
showing the same value.if you applied 50 psi throuhg the
calibrator then the transmitter should have to show the
same value.If you find any error.Do the zero/span
Adjustment.by adjusting the zero/span screw
increasing/decreasing
step4: compare the transmitter and calibrator as per follows

calibrator Transmitter Transmitter o/p
in psi in psi in mA
0 0 4
25 25 8
50 50 12
75 75 16
100 100 20

Answer / vasu

Calibration of instruments is nothing but comparing the
actual value of the instrument which u use with the
standard value of that instrument model......

Answer / bill

If an instrument operates throughout it's full range
with linearity and porportionality when compared to
an NIST Standard, it is considered in calibration
( National Institute of Standards and Technology )

Answer / joseph

cALIBRATION IS NOTHING BUT THE COMPARISON BETWEEN THE
STANDERED VALUE AND THE MEASURED VALUE.

Answer / sakthisithardhan

Calibration is the process of to set an instrument to show
the reading in between allowable scale....



example 0-10V meter
if ponter shows <0 means v've to calibrate it to show exact
0.

Answer / rajiv mehta

To check whether the instrument in use is with in the
standard parameters

Answer / narenkumar1985

calibration equipment: calibrator with hand-pump


1: connect the calibrator to the transmitter
2: connect the multimeter in series with transmitter to
verify the transmitter o/p in mA
3: Apply the pressure to the transmitter by hand pump
in calibrator
4: compare whether both calibrator and the transmitter
showing the same value.if you applied X psi through the
calibrator then the transmitter should have to show the
same value.If you find any error.Do the zero/span
Adjustment.by adjusting the zero/span screw
increasing/decreasing
5: compare the transmitter and calibrator as per follows
with a desired range of an instrument with o/p 4-20mA

Answer / vivek saini

CALIBRATION of INSTRUMENT IS A TESTING OF ACTUAL VALUE ie:- value which is calculated WITH THE NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY (NSIT) VALUE GENERALLY DONE FOR CHECHING THE ACCURACY OF INSTRUMENT.

Answer / rafiq

calibration is nothing but the "testing" . it compares the
actual value to real value and realise that value takes the
decisions

what is the difference between E/P positioner and I/P positioner in control valve , in which application the respective positioner are used in.

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what is proportional & what is proportional band

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