EN ISO 21178:2020
(Main)Light conveyor belts - Determination of electrical resistances (ISO 21178:2020)
Light conveyor belts - Determination of electrical resistances (ISO 21178:2020)
This document specifies test methods for determining the electrical resistances of light conveyor belts according to ISO 21183‑1. The resistances are surface resistance, volume resistance perpendicular to the belt plane, and longitudinal and transverse volume resistance parallel to the belt plane. This document also specifies two test methods for determining the surface resistivity and the volume resistivity.
Leichte Fördergurte - Bestimmung der elektrischen Widerstände (ISO 21178:2020)
Dieses Dokument legt Prüfverfahren zur Bestimmung der elektrischen Widerstände leichter Fördergurte nach ISO 21183 1 fest. Die Widerstände sind der Oberflächenwiderstand, der Durchgangswiderstand senkrecht zur Gurtoberfläche und der Durchgangswiderstand in Längs- und Querrichtung parallel zur Gurtoberfläche. Dieses Dokument legt auch zwei Prüfverfahren zur Bestimmung des spezifischen Oberflächenwiderstands und des spezifischen Durchgangswiderstands fest.
Courroies transporteuses légères - Détermination des résistances électriques (ISO 21178:2020)
Le présent document spécifie des méthodes d'essai pour la détermination des résistances électriques des courroies transporteuses légères selon l'ISO 21183-1. Les résistances sont la résistance surfacique, la résistance volumique perpendiculaire au plan de la courroie et la résistance volumique transversale et longitudinale parallèle au plan de la courroie. Le présent document spécifie également deux méthodes d'essai pour déterminer la résistivité surfacique et la résistivité volumique.
Naprave za kontinuirni transport - Lahki trakovi tračnih transporterjev - Ugotavljanje električnih upornosti (ISO 21178:2020)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2020
Nadomešča:
SIST EN ISO 21178:2013
Naprave za kontinuirni transport - Lahki trakovi tračnih transporterjev -
Ugotavljanje električnih upornosti (ISO 21178:2020)
Light conveyor belts - Determination of electrical resistances (ISO 21178:2020)
Leichte Fördergurte - Bestimmung der elektrischen Widerstände (ISO 21178:2020)
Courroies transporteuses légères - Détermination des résistances électriques (ISO
21178:2020)
Ta slovenski standard je istoveten z: EN ISO 21178:2020
ICS:
53.040.20 Deli za transporterje Components for conveyors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 21178
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2020
EUROPÄISCHE NORM
ICS 53.040.10 Supersedes EN ISO 21178:2013
English Version
Light conveyor belts - Determination of electrical
resistances (ISO 21178:2020)
Courroies transporteuses légères - Détermination des Leichte Fördergurte - Bestimmung der elektrischen
résistances électriques (ISO 21178:2020) Widerstände (ISO 21178:2020)
This European Standard was approved by CEN on 18 January 2020.
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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 21178:2020 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 21178:2020) has been prepared by Technical Committee ISO/TC 41 "Pulleys
and belts (including veebelts)" in collaboration with Technical Committee CEN/TC 188 “Conveyor belts”
the secretariat of which is held by SNV.
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 August 2020, and conflicting national standards shall
be withdrawn at the latest by August 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 21178:2013.
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, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 21178:2020 has been approved by CEN as EN ISO 21178:2020 without any modification.
INTERNATIONAL ISO
STANDARD 21178
Third edition
2020-02
Light conveyor belts — Determination
of electrical resistances
Courroies transporteuses légères — Détermination des résistances
électriques
Reference number
ISO 21178:2020(E)
©
ISO 2020
ISO 21178:2020(E)
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
ISO 21178:2020(E)
Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 2
5 Electrical surface resistances . 2
5.1 Method A: Measurement of surface resistance, R , omni-directionally . 2
OA
5.1.1 Applicability . 2
5.1.2 Principle . 2
5.1.3 Apparatus (see Figure 1) . 2
5.1.4 Test piece . 4
5.1.5 Procedure . 5
5.1.6 Expression of results . 6
5.1.7 Test report . 6
5.2 Method B: Measurement of surface resistance R in longitudinal and transverse
OB
directions . 6
5.2.1 Applicability . 6
5.2.2 Principle . 6
5.2.3 Apparatus (see Figure 4) . 6
5.2.4 Test piece . 8
5.2.5 Procedure . 9
5.2.6 Expression of results . 9
5.2.7 Test report . 9
6 Electrical surface resistivity ρ .10
s
6.1 General .10
6.2 Principle .10
6.3 Apparatus .11
6.4 Test piece .12
6.4.1 Material .12
6.4.2 Dimensions .12
6.4.3 Number .12
6.4.4 Cleaning .12
6.4.5 Conditioning .12
6.4.6 Preparation .12
6.5 Procedure .12
6.6 Expression of results .13
6.7 Test report .13
7 Electrical volume resistances .13
7.1 Volume resistance, R , perpendicular to plane of belt.13
D
7.1.1 Principle .13
7.1.2 Apparatus .13
7.1.3 Test piece .14
7.1.4 Procedure .15
7.1.5 Expression of results .15
7.1.6 Test report .15
7.2 Volume resistance, R , in longitudinal and transverse directions parallel to plane
Di
of belt .16
7.2.1 Principle .
...
SLOVENSKI STANDARD
01-julij-2020
Nadomešča:
SIST EN ISO 21178:2013
Naprave za kontinuirni transport - Lahki trakovi tračnih transporterjev -
Ugotavljanje električnih upornosti (ISO 21178:2020)
Light conveyor belts - Determination of electrical resistances (ISO 21178:2020)
Leichte Fördergurte - Bestimmung der elektrischen Widerstände (ISO 21178:2020)
Courroies transporteuses légères - Détermination des résistances électriques (ISO
21178:2020)
Ta slovenski standard je istoveten z: EN ISO 21178:2020
ICS:
53.040.20 Deli za transporterje Components for conveyors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 21178
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2020
EUROPÄISCHE NORM
ICS 53.040.10 Supersedes EN ISO 21178:2013
English Version
Light conveyor belts - Determination of electrical
resistances (ISO 21178:2020)
Courroies transporteuses légères - Détermination des Leichte Fördergurte - Bestimmung der elektrischen
résistances électriques (ISO 21178:2020) Widerstände (ISO 21178:2020)
This European Standard was approved by CEN on 18 January 2020.
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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 21178:2020 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 21178:2020) has been prepared by Technical Committee ISO/TC 41 "Pulleys
and belts (including veebelts)" in collaboration with Technical Committee CEN/TC 188 “Conveyor belts”
the secretariat of which is held by SNV.
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 August 2020, and conflicting national standards shall
be withdrawn at the latest by August 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 21178:2013.
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, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 21178:2020 has been approved by CEN as EN ISO 21178:2020 without any modification.
INTERNATIONAL ISO
STANDARD 21178
Third edition
2020-02
Light conveyor belts — Determination
of electrical resistances
Courroies transporteuses légères — Détermination des résistances
électriques
Reference number
ISO 21178:2020(E)
©
ISO 2020
ISO 21178:2020(E)
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
ISO 21178:2020(E)
Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 2
5 Electrical surface resistances . 2
5.1 Method A: Measurement of surface resistance, R , omni-directionally . 2
OA
5.1.1 Applicability . 2
5.1.2 Principle . 2
5.1.3 Apparatus (see Figure 1) . 2
5.1.4 Test piece . 4
5.1.5 Procedure . 5
5.1.6 Expression of results . 6
5.1.7 Test report . 6
5.2 Method B: Measurement of surface resistance R in longitudinal and transverse
OB
directions . 6
5.2.1 Applicability . 6
5.2.2 Principle . 6
5.2.3 Apparatus (see Figure 4) . 6
5.2.4 Test piece . 8
5.2.5 Procedure . 9
5.2.6 Expression of results . 9
5.2.7 Test report . 9
6 Electrical surface resistivity ρ .10
s
6.1 General .10
6.2 Principle .10
6.3 Apparatus .11
6.4 Test piece .12
6.4.1 Material .12
6.4.2 Dimensions .12
6.4.3 Number .12
6.4.4 Cleaning .12
6.4.5 Conditioning .12
6.4.6 Preparation .12
6.5 Procedure .12
6.6 Expression of results .13
6.7 Test report .13
7 Electrical volume resistances .13
7.1 Volume resistance, R , perpendicular to plane of belt.13
D
7.1.1 Principle .13
7.1.2 Apparatus .13
7.1.3 Test piece .14
7.1.4 Procedure .15
7.1.5 Expression of results .15
7.1.6 Test report .15
7.2 Volume resistance, R , in longitudinal and transverse directions parallel to plane
Di
of belt .16
7.2.1 Principle .
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.