QIMT Glossary



Definitions of Metrology terms & phrases.

If you know of a term or phrase that belongs here, you can submit the term or phrase and associated definition by adding an entry. NOTE: All entries are reviewed and approved prior to being seen by others on the site.


Procedure for adding a Definition:

  1. Click on the "Add a New Entry" button.
  2. Under the first required field labeled 'Concept', enter the Metrology word or term.
  3. In the 'Description' Field, put the definition, don't forget to use the "DeWord" button to remove MS Word formatting if you are copying and pasting from MS Word; see lounge forum for note regarding this issue.
  4. Ignore the other entries and submit.


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Browse the glossary using this index

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S

Stimulus

The input signal for a measuring system can be called a stimulus and the output signal can be called a response.

System of measurement units

A number of basic units and derived units defined in accordance with given rules for a given system of values.

System of units

Systematic error

Mean that would result from an infinite number of measurements of the same measurand carried out under repeatability conditions minus a true value of the measurand.

T

TBT

Technical Barrier to Trade.

Testing

Technical procedure consisting of the determination of one or more characteristics of a given product, process service, in accordance with a specified procedure.

Threshold, resolution capability (discrimination)

Largest change in a stimulus that produces no detectable change in the response of a measuring instrument, the change in the stimulus taking place slowly and monotonically.

Traceability

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

Traceability chain

The unbroken chain of comparisons is defined under Traceability.

Transfer equipment

The description “transfer equipment” should be used when the intermediate link is not a standard.

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