FAQ

Calibration is defined as “The Procedure to make a new measurement standard for a quantity by comparison with an existing standard of the same quantity”.

A set of operations, performed in accordance with a definite procedure (SOP), that compares the measurements performed by an instrument to those made by a more accurate instrument or a standard for the purpose of detecting and reporting, or by adjustment, errors met in the instrument tested.

The primary significance of calibration is that it maintains accuracy, standardization, and repeatability (precision)  in measurements, assuring reliable benchmarks and results.

To ensure readings from an instrument are consistent with other instruments and to determine the accuracy of the instrument i.e. that it can be trusted for its observed/displayed measured value.

Calibration ensures that a measuring instrument displays an accurate and reliable value of the quantity being measured.

It Checks the Accuracy of the Instrument.

Ensure the Repeatability of Measured Value.

It determines the Traceability of the Measurement.

1)  A new instrument.

2) After an instrument has been repaired/ modified.

3) Moving from one location to another location.

4) When a specified period has elapsed (Frequency or calibration Interval).

5) When a specified usage (operating hours) has elapsed.

6). Before and/or after a critical measurement.

7). After an event, for example:

a) After an instrument has been exposed to a shock, vibration, or physical damage, which might potentially have compromised the integrity of its calibration.

b) Sudden weather changes.

1) Whenever observations appear questionable or instrument indications do not match the output of surrogate instruments.

2)As specified by a requirement, e.g., customer specification, instrument manufacturer recommendation

A standard means a reference, which remains unchanged, constant, or stable.

The magnitude of these standards is essentially arbitrarily fixed but the main emphasis is on stability, the first and foremost requirement of a standard.

A standard essentially brings uniformity or homogeneity in the measurement of a quantity by various users worldwide.

Property of the result of a measurement or related to stated references, usually national or international standards, through an unbroken chain of comparisons all having stated uncertainties.