SIST EN ISO 9493:2012

SLOVENSKI STANDARD
01-marec-2012
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Geometrical product specifications (GPS) - Dimensional measuring equipment: Dial test
indicators (lever type) - Design and metrological requirements (ISO 9493:2010)
Geometrische Produktspezifikation (GPS) - Längenmessgeräte: Fühlhebelmessgeräte -
Konstruktionsmerkmale und messtechnische Merkmale (ISO 9493:2010)
Spécification géométrique des produits (GPS) - Équipement de mesurage dimensionnel:
Comparateurs à levier mécaniques - Caractéristiques de conception et caractéristiques
métrologiques (ISO 9493:2010)
Ta slovenski standard je istoveten z: EN ISO 9493:2010
ICS:
17.040.30 Merila Measuring instruments
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 9493
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2010
ICS 17.040.30
English Version
Geometrical product specifications (GPS) - Dimensional
measuring equipment: Dial test indicators (lever type) - Design
and metrological characteristics (ISO 9493:2010)
Spécification géométrique des produits (GPS) - Geometrische Produktspezifikation (GPS) -
Équipement de mesurage dimensionnel: Comparateurs à Längenmessgeräte: Fühlhebelmessgeräte -
levier mécaniques - Caractéristiques de conception et Konstruktionsmerkmale und messtechnische Merkmale
caractéristiques métrologiques (ISO 9493:2010) (ISO 9493:2010)
This European Standard was approved by CEN on 2 October 2010.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 9493:2010: E
worldwide for CEN national Members.

Contents Page
Foreword .3

Foreword
This document (EN ISO 9493:2010) has been prepared by Technical Committee ISO/TC 213 “Dimensional
and geometrical product specifications and verification” in collaboration with Technical Committee
CEN/TC 290 “Dimensional and geometrical product specification and verification” the secretariat of which is
held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by May 2011, and conflicting national standards shall be withdrawn at the
latest by May 2011.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 9493:2010 has been approved by CEN as a EN ISO 9493:2010 without any modification.

INTERNATIONAL ISO
STANDARD 9493
First edition
2010-11-01
Geometrical product specifications
(GPS) — Dimensional measuring
equipment: Dial test indicators (lever
type) — Design and metrological
characteristics
Spécification géométrique des produits (GPS) — Équipement de
mesurage dimensionnel: Comparateurs à levier mécaniques —
Caractéristiques de conception et caractéristiques métrologiques

Reference number
ISO 9493:2010(E)
©
ISO 2010
ISO 9493:2010(E)
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ii © ISO 2010 – All rights reserved

ISO 9493:2010(E)
Contents Page
Foreword .iv
Introduction.v
1 Scope.1
2 Normative references.1
3 Terms and definitions .1
4 Design characteristics .2
4.1 General design features.2
4.2 Type .2
4.3 Nomenclature.4
4.4 Dovetail mounting .4
4.5 Dial and pointer .5
4.6 Stylus.6
4.7 Zero adjustment.7
4.8 Design characteristics (manufacturer's specification).7
5 Metrological characteristics.7
5.1 Maximum permissible error (MPE) and maximum permissible limit (MPL) for a number of
metrological characteristics.7
5.2 Stylus.8
5.3 Measuring forces.8
6 Proving of conformance with specification.8
6.1 General .8
6.2 Measurement standards for calibration of metrological characteristics .8
7 Marking.8
Annex A (informative) Examples of a diagram of errors of indication .9
Annex B (informative) Example of data sheet for dial test indicators.11
Annex C (informative) Calibration of metrological characteristics.13
Annex D (informative) Notes on use .15
Annex E (informative) Relation to the GPS matrix model.17
Bibliography.19

ISO 9493:2010(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 9493 was prepared by Technical Committee ISO/TC 213, Dimensional and geometrical product
specifications and verification.
iv © ISO 2010 – All rights reserved

ISO 9493:2010(E)
Introduction
This International Standard is a geometrical product specification (GPS) standard and is to be regarded as a
general GPS standard (see ISO/TR 14638). It influences the chain link 5 of the chains of standards on size,
distance, form of a line independent of datum, form of a line dependent of datum, form of a surface
independent of datum, form of a surface independent of datum, orientation, location, circular run-out and total
run-out in the general GPS matrix.
When using this International Standard, see ISO 14978.
For more detailed information on the relation of this International Standard to other standards and the GPS
matrix, see Annex E.
INTERNATIONAL STANDARD ISO 9493:2010(E)

Geometrical product specifications (GPS) — Dimensional
measuring equipment: Dial test indicators (lever type) — Design
and metrological characteristics
1 Scope
This International Standard specifies the most important design and metrological characteristics of dial test
indicators (lever type).
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 14253-1:1998, Geometrical Product Specifications (GPS) – Inspection by measurement of workpieces
and measuring equipment — Part 1: Decision rules for proving conformance or non-conformance with
specifications
1)
ISO 14253-2:— , Geometrical product specifications (GPS) – Inspection by measurement of workpieces and
measuring equipment — Part 2: Guidance for the estimation of uncertainty in GPS measurement, in
calibration of measuring equipment and in product verification
ISO 14978:2006, Geometrical product specifications (GPS) — General concepts and requirements for GPS
measuring equipment
ISO/IEC Guide 98-3, Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in
measurement (GUM:1995)
ISO/IEC Guide 99, International vocabulary of metrology — Basic and general concepts and associated terms
(VIM)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/IEC Guide 99, ISO 14253-1,
ISO 14253-2, ISO 14978 and the following apply.
3.1
dial test indicator
〈lever type〉 measuring instrument in which the displacement of a pivoting stylus is transmitted and magnified
by suitable mechanical means to a pointer which rotates in front of a circular scale

1) To be published. (Revision of ISO/TS 14253-2:1999)
ISO 9493:2010(E)
4 Design characteristics
4.1 General design features
4.1.1 The general design and workmanship of the dial test indicator shall be such that its metrological
characteristics comply with the requirements of this International Standard under all orientations of operation.
4.1.2 Dial test indicators indicate displacement in a direction normal to the axis of the stylus, and in the
same plane as the rotational direction of the stylus, unless otherwise stated. See Figure D.1 as an example. If
used at some other angle, a correction shall be made (see Annex D).
4.1.3 Dial test indicators shall be capable of measuring when the stylus is displaced in either direction from
its rest position.
NOTE Some dial test indicators have the ability to measure in both directions without external adjustments and some
dial test indicators are provided with a bias lever to change the measuring direction.
4.2 Type
Dial test indicators are commonly manufactured in three types [see Figure 1 a), b) and c)]. These types have
the following names.
⎯ Type S, Standard, where the dial face is mounted on the body of the dial test indicator, in a plane
perpendicular to the plane in which the stylus moves.
⎯ Type H, Horizontal, where the dial face is mounted on the body of the dial test indicator, in a plane
parallel to the plane in which the stylus moves.
⎯ Type V, Vertical, where the dial face is mounted at the end of the dial test indicator opposite that of the
stylus.
NOTE Although less common, configurations of dial test indicators, which do not fall into the above three categories,
exist. The above-mentioned list of three named types includes those that are the most common.
2 © ISO 2010 – All rights reserved

ISO 9493:2010(E)
a)  Type S b)  Type H
c)  Type V
Figure 1 — Examples of dial test indicator types
ISO 9493:2010(E)
4.3 Nomenclature
Design features of dial test indicators are shown in Figure 2. The descriptions in this International Standard
use the nomenclature shown in this figure.

Key
1 dovetail segments
2 bias lever (if required)
3 stylus
4 stylus tip
5 bezel
6 dial
7 scale
8 pointer
9 housing
10 friction or ratchet drive
Figure 2 — Nomenclature
4.4 Dovetail mounting
Dial test indicators shall be provided with a means to facilitate attachment to test stands or other similar
devices. This is often accomplished by means of dovetail segments on the body of the dial test indicator
(see Figure 2) and a dovetail clamp. The exact design and location of these dovetail segments is left to the
manufacturer's discretion.
Clamping stems shall conform to the fit tolerance h6 (see Figure 3 and Table 1) to ensure interchangeability.
Common nominal diameters of clamping stems include 4 mm, 6 mm and 8 mm. A portion of the clamping
stem (L in Figure 3) no shorter than 12 mm shall be held to the fit tolerance (controlled diameter). The
clamping stem can be longer than this minimum length, but it is not necessary to hold the h6 tolerance on the
entire length.
4 © ISO 2010 – All rights reserved

ISO 9493:2010(E)
Figure 3 — Example of clamping stems
4.5 Dial and pointer
The circular scale shall be graduated in scale intervals. The scale interval and its unit shall be labelled.
Examples of scale layouts are shown in Figure 4 (e.g. scale intervals of 0,01 mm, 0,001 mm, and 0,002 mm).
At rest, the pointer shall be at least 1/10 revolution counterclockwise from the point representing the beginning
of the measuring range. This beginning point is normally the 12 o'clock or the 6 o'clock position on the dial.
The pointer shall move at least one full revolution beyond this beginning point of the measuring range, to the
next occurrence of this point, plus at least another 1/10 revolution before reaching the end of its travel. This
range before the measuring range begins is called pre-span, and the range after one full revolution is called
post-span. The pre-span and post-span movements shall not be considered in the measuring range of the dial
test indicator.
NOTE There are dial test indicators in use with less than 1/10 revolution of pre-span or post-span. In these cases, it
is the responsibility of the user and the manufacturer to agree on the amount of pre-span allowed.
In any case, there shall be at least one full revolution of measuring range, plus some agreed upon amount
...