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ISO 17123-3:2001

Optics and optical instruments — Field procedures for testing geodetic and surveying instruments — Part 3: Theodolites

Edition date: 2001-12-13
In Force
Available languages: French, English
Summary:

La présente partie de l'ISO 17123 spécifie les méthodes sur site à suivre lors de la détermination et de l'évaluation

de la précision (répétabilité) des théodolites et de l'équipement auxiliaire utilisé pour les mesurages de construction

et d'observation. En premier lieu, ces essais sont destinés à être des vérifications de terrain de l'adéquation d'un instrument

particulier et pour satisfaire aux exigences des autres normes. Ils ne sont pas proposés comme des essais

d'évaluations de l'acceptation et de la performance, plus compréhensibles par nature.

La présente partie de l'ISO 17123 peut être appréhendée comme l'une des premières étapes dans le processus

d'évaluation de l'incertitude d'un mesurage (plus précis d'un mesurande). L'incertitude d'un résultat de mesurage dépend

d'un certain nombre de facteurs. Ces facteurs incluent, entre autres: répétabilité (précision), reproductibilité,

traçabilité, et une évaluation de toutes les sources d'erreurs possibles telles que prescrites dans le Guide ISO de

l'expression de l'incertitude de mesurage.

Ces méthodes sur site peuvent s'appliquer n'importe où sans équipement auxiliaire spécial, et sont conçues de

manière à réduire les influences atmosphériques.



This part of ISO 17123 specifies field procedures to be adopted when determining and evaluating the precision (repeatability)

of theodolites and their ancillary equipment when used in building and surveying measurements. Primarily,

these tests are intended to be field verifications of the suitability of a particular instrument for the immediate task

at hand and to satisfy the requirements of other standards. They are not proposed as tests for acceptance or performance

evaluations that are more comprehensive in nature.

This part of ISO 17123 can be thought of as one of the first steps in the process of evaluating the uncertainty of a

measurement (more specifically a measurand). The uncertainty of a result of a measurement is dependent on a

number of factors. These include among others: repeatability (precision), reproducibility (between day repeatability),

traceability (an unbroken chain to national standards) and a thorough assessment of all possible error sources, as

prescribed by the ISO Guide to the expression of uncertainty in measurement (GUM).

These field procedures have been developed specifically for in situ applications without the need for special ancillary

equipment and are purposefully designed to minimize atmospheric influences.
ICS: 17.180.30-Optical measuring instruments
CTN: ISO/TC 172/SC 6 - 53732

Standards Cancellations

Anula a ISO 8322-4:1991

Anula a ISO 12857-2:1997

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