Errors | Errors in Measurement | Absolute Error | Relative Error | Causes Of Calibration

Errors in Measurement :

Error = Measured Value – True Value

Em = Vm – Vt

1. Absolute Error :

01-Errors In Measurement-Absolute Error-Greater Accuracy And Precision

            True absolute error :

= Result of measurement – True Value

            Apparent Absolute error :

= Result of measurement – Arithmetic Value

2. Relative error :

It is defined as the results of the absolute error and the value of comparison used for 450

calculation of that absolute error.

01-Relative Error-Percentage Relative Error-Absolute Error

Causes of Errors :

1. Calibration Error:

These are caused due to the variation in the calibrated scale from it’s normal value.

01-Error-Calibration Test-Calibration Of Gauges-Calibrate A Instrument By A Standard Gauge-Panametrics-Ndt_Calibration_Test_Blocks

2. Environmental Error :

These are caused due to humidity condition,Temperature and altitude.

3. Assembly Error:

i. Displaced Scale (incorrect Fitting)

ii. Non –uniform division of the scale.

iii. Due to bent /distorted pointer.

01-Parallex Error-Eye Fault Defect By Human-Bias Error

4. Random Error:

Naturally Occurred

No specific reasons

5. Systematic errors (or) Bias errors:

These are caused due to repeated readings.

01-Errors-Types Of Error-Systematic Error-Random Error-Bias Error

6. Chaotic errors :

These are caused due to vibrations,noises and shocks.

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