Calibration · Glossary

What is a Calibration Correction?

value added to a readingCalibration

A calibration correction is the value added to an instrument reading to obtain the corrected value; it is the negative of the error.

Calibration Correction Explained

Certificates often list corrections at each test point. Users apply them, often interpolating between points.

Using corrections lets a less accurate instrument give better results, but the correction uncertainty must be included.

Correction = True − Reading = −Error

True	reference value
Reading	instrument indication

Example: Reading 100.4 °C at a true 100.0 °C: correction −0.4 °C.

What is a Calibration Correction?

A calibration correction is the value added to an instrument reading to obtain the corrected value; it is the negative of the error.

Error or correction on certificates?

Either can be shown; check the sign convention.

Do I interpolate corrections?

Linear interpolation between nearby points is common.

Instrumentation calibration and troubleshooting guide

A practical guide on instrumentationblog.in with more detail on calibration correction and how it is applied on real plants.

All calibration terms · Full glossary A to Z