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.

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ISO 20238:2018 specifies a method of testing to determine the propensity of a conveyor belt to generate heat flame or glow when held stationary, under a given tension, in surface contact around a rotating driven steel drum.
ISO 20238:2018 describes means of varying the conveyor belt tension.
NOTE       For conveyor belts containing steel reinforcement, it may not be possible to conduct this test in full due to the inability of the conveyor belt to comply with the requirements of 7.2. In this case, premature termination according to 7.3 can be necessary.

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This document establishes a list of equivalent terms relating to light conveyor belts.
NOTE       In addition to terms used in the three official ISO languages (English, French and Russian), this document gives the equivalent terms in German, Spanish, Italian and Japanese; these are published under the responsibility of the member bodies for Germany (DIN), Spain (AENOR), Italy (UNI) and Japanese (JISC). However, only the terms given in the official languages can be considered as ISO terms.

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This document specifies three methods for the measurement of total belt thickness and the thickness of covers of steel cord conveyor belts.
Methods A1 and A2 (micrometer methods) can be used for all steel cord conveyor belts for the measurement of both total belt thickness and cover thickness.
Method B (optical method) is intended for the measurement of cover thickness only. It is not suitable if there is a textile or metal weft, nor if the ends of the steel cords become twisted when cut.

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ISO 505:2017 specifies a method of test for the measurement of the propagation resistance of an initial tear in textile conveyor belts, either in full thickness or of the carcass only.
This test is intended for application to textile belts in installations where there is a risk of longitudinal tearing.

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ISO 15236-3:2017 specifies the performance and constructional requirements applicable to conveyor belts for underground mining having steel cords in the longitudinal direction as reinforcement. The requirements for design and construction apply to the design of single belts, as well as the design of complete type series such as those covered in ISO 15236‑2.
Steel cord belts in accordance with this document are intended for use underground in coal mines and in other applications where the highest demands for safety against fire and explosion hazards have to be complied with.
NOTE          At present, the requirements can only be met by the use of compounds based on chloroprene rubber for the covers, as well as for the bonding rubber.

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ISO 15236-2:2017 specifies preferred types of conveyor belts with steel cords in the longitudinal direction as reinforcement. The belt type series in this document are based on the general requirements for construction given in ISO 15236‑1.

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ISO 703:2017 specifies a test method for determining the transverse flexibility (troughability) of a conveyor belt, expressed as a ratio, F/L. The method is not suitable or valid for light conveyor belts as described in ISO 21183‑1.

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ISO 15236-1:2016 specifies the performance and constructional requirements applicable to conveyor belts having steel cords in the longitudinal direction as reinforcement. The requirements for construction given in Clause 6 apply to the design of single belts, as well as the design of complete type series such as those covered in ISO 15236‑2.

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ISO 9856:2016 specifies a method for determining the elastic and permanent elongation of a conveyor belt and the calculation of the elastic modulus.
It is not applicable or valid for light conveyor belts as described in ISO 21183‑1.

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This draft European Standard defines a method for the determination of the width related indentation rolling resistance of conveyor belts. The goal is that the method easily and quickly delivers values which are reproducible and relevant for the practical use. The test results enable a comparing evaluation and the design of belt conveyors with steelcord and fabric conveyor belts.
This draft European Standard is not suitable or valid for light conveyor belts described in EN ISO 21183 1.

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ISO 7622-2:2015 specifies a method for the determination of the tensile strength, in the longitudinal, of steel cords constituting the carcass of conveyor belts.
It applies exclusively to conveyor belts with a steel carcass.
NOTE          A method for the determination of elongation is specified in ISO 7622‑1.

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ISO 283:2015 specifies a test method for the determination of the full thickness tensile strength in the longitudinal direction and the elongation at the reference force and breaking point of conveyor belts having a textile carcass. The method can also be used for the determination of full thickness tensile strength in the transverse direction and the elongation at the breaking point, for use when the manufacturer is requested by the purchaser to state values for these properties.
ISO 283:2015 is not suitable or valid for light conveyor belts as described in ISO 21183‑1.

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from CEN/TC 188 N362: The revision of EN 14973 should be started to bring it in line with the revised EN 12881-1 and EN 12881-2. (see Resolution 2/2011). The experts present agree that an Annex should be added to EN 14973 to specify that Family approval for belts is possible. Resolution 2/2011: The experts present agree that general revision of EN 14973 and EN 12882 is needed due to the work being done on EN 12881-1 and EN 12881-2.

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ISO 7623:2015 specifies a method for determining the bond strength of metal cords to their surrounding coating, either in the initial state or after thermal treatment.
It applies exclusively to metal-carcass conveyor belts.

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This European Standard specifies electrical and flammability safety requirements for general purpose conveyor belts not intended for use in underground installations and a means of categorizing conveyor belts in terms of the level of safety sought in their end use application. This European Standard does not provide electrical safety requirements for volume resistance which may be measured by the methods in EN ISO 21178 and which is relevant to some types of light conveyor belts.
This European Standard is not applicable to conveyor belts which are manufactured before the date of publication of this document by CEN.
NOTE 1   Directive 94/9/EC concerning equipment and protective systems intended for use in potentially explosive atmospheres can be applicable to the type of machine or equipment covered by this European Standard. The present standard is not intended to provide means of complying with the essential health and safety requirements of Directive 94/9/EC, this being covered in EN 14973.
NOTE 2   EN 12882 is not a product standard but is intended to help users of conveyor belts to select the required electrical and flammability safety properties needed following a suitable risk assessment. No requirements are, therefore, included for marking, information to be supplied, etc., these matters being covered in relevant product standards such as EN ISO 14890 and EN ISO 15236 1.

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EN 12881-1 describes four methods for measuring the propagation of a flame along a conveyor belt which has been exposed to a relatively high localized heat source such as a fire. The damage suffered by the conveyor belt, as well as its tendency to support combustion, is measured by observing the extent to which the fire spreads along the test piece.
Method A uses a test piece 2 m in length and consumes propane gas through the burner at the rate of (1,30 ± 0,05) kg per 10 min.
Method B uses a test piece 2,5 m in length and consumes propane gas through two burners mounted above and below the test piece trestle at the rate of (1,30 ± 0,05) kg per 10 min for each burner.
Method C uses a test piece 1,5 m in length and consumes propane gas through the burner at the rate of (565 ± 10) g per 50 min.
Method D uses a test piece 1,2 m in length and consumes propane gas through the burner at the rate of
150 l/hr (D1) or 190 l/hr (D2).

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ISO 16851:2012 specifies a method for determining the net length of an endless (spliced) conveyor belt.
It applies to all types of construction of conveyor belting with the exception of belts containing steel cord reinforcement. It is not suitable or valid for light conveyor belts described in ISO 21183-1.

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ISO 7622-1:2013 specifies a method for the determination of the elongation of steel cords constituting the carcass of conveyor belts, when subjected to a force corresponding to 10 % and 60 % of the specified tensile strength.
It applies exclusively to conveyor belts with a steel carcass.

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ISO 8094:2013 specifies a test method for determining the adhesion strength of the cover to the core layer. It applies exclusively to steel cord conveyor belts.

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ISO 21179:2013 specifies a test method for the determination of the electrostatic field generated by a running light conveyor belt according to ISO 21183-1.

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2012-07-10 EMA: Draft for final vote received in ISO/CS (see 2012-07-10 notification in dataservice).
MINOR REVISION       MINOR REVISION       MINOR REVISION       MINOR REVISION       MINOR REVISION

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ISo 21181:2013 specifies a test method for the determination of the relaxed elastic modulus of light conveyor belts according to ISO 21183-1 or other conveyor belts where ISO 9856 is not applicable.

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ISO 21182:2013 specifies test methods for determining the dynamic and static coefficients of friction for light conveyor belts according to ISO 21183-1.

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ISO 14890:2013 specifies requirements for rubber and/or plastics covered conveyor belting of textile construction for general surface use on flat or troughed idlers.
ISO 14890:2013 is not suitable or valid for light conveyor belts as described in ISO 21183-1.
Items that are not requirements of ISO 14890:2013, but need to be agreed between the manufacturer and the purchaser, as well as a list of the details intended to be supplied by the purchaser of belting with an enquiry are included in the annexes.

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ISO 284:2012 specifies the maximum electrical resistance of a conveyor belt and the corresponding test method.
The test is intended to ensure that the belt is sufficiently conductive to avoid the accumulation of electrical static charge which can be developed during service use.
ISO 284:2012 is not suitable or applicable to light conveyor belts as described in ISO 21183-1, the static electrical properties of which are measured by ISO 21178.

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ISO 15147:2012 specifies methods for the measurement of widths and lengths of cut light conveyor belts as described in ISO 21183-1 and specifies the tolerances on the dimensions.

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ISO 1120:2012 specifies a static test method for measuring the strength of a conveyor belt mechanical fastening; the mechanical joints can be either of the type employing a connecting rod or of a type which does not employ a connecting rod.

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This document describes a method of testing for the assessment of fire propagation along a conveyor belt when the belt is exposed to a heat source.

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ISO 22721:2007 specifies requirements for rubber- or plastics-covered conveyor belting of textile construction for underground mining on flat or troughed idlers. It is not applicable to light conveyor belts as described in ISO 21183‑1. ISO 22721:2007 does not include requirements for plastics covers.

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ISO 252:2007 specifies two test methods, A and B, for determining the adhesion strength between constitutive elements of a conveyor belt, i.e. between plies and between covers and carcass. Basic test conditions are in conformity with ISO 36.
It is applicable to all types of construction of conveyor belting with the exception of belts containing steel cord reinforcement, and textile-reinforced belts with a full-thickness tensile strength of less than 160 N/mm. It is not suitable or valid for light conveyor belts as described in ISO 21183-1.

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ISO 583:2007 specifies test methods for the determination of total belt thickness and the thickness of constitutive elements of conveyor belts having a textile carcass. The constitutive elements include the covers, the carcass and interlayers, i.e. the material between adjoining plies. It is not suitable or valid for light conveyor belts as described in ISO 21183-1.

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This document specifies a method for assessing, on a small scale, the reaction of a conveyor belt to an ignition flame source. It is applicable to conveyor belts having a textile carcass as well as steel cord conveyor belts.

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ISO 21183-1:2005 describes the principal characteristics and applications of light conveyor belts. This description is necessary either for limiting the validity of certain standards to light conveyor belts or for excluding light conveyor belts from the validity of certain standards.

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ISO 15236-4:2004 specifies design, dimensions, requirements and marking of vulcanized joints for steel cord conveyor belts.

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This European Standard specifies methods for the determination of the mean lateral displacement between cords, and for the determination of the vertical displacement of cords relative to a mean level of steel cords within a conveyor belt as described in prEN ISO 15236-1.

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ISO 283:2015 specifies a test method for the determination of the full thickness tensile strength in the longitudinal direction and the elongation at the reference force and breaking point of conveyor belts having a textile carcass. The method can also be used for the determination of full thickness tensile strength in the transverse direction and the elongation at the breaking point, for use when the manufacturer is requested by the purchaser to state values for these properties.
ISO 283:2015 is not suitable or valid for light conveyor belts as described in ISO 21183‑1.

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ISO 583:2007 specifies test methods for the determination of total belt thickness and the thickness of constitutive elements of conveyor belts having a textile carcass. The constitutive elements include the covers, the carcass and interlayers, i.e. the material between adjoining plies. It is not suitable or valid for light conveyor belts as described in ISO 21183-1.

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This document specifies a method for the determination of the tensile strength, in the longitudinal, of steel cords constituting the carcass of conveyor belts.
It applies exclusively to conveyor belts with a steel carcass.
NOTE      A method for the determination of elongation is specified in ISO 7622‑1.

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ISO 252:2007 specifies two test methods, A and B, for determining the adhesion strength between constitutive elements of a conveyor belt, i.e. between plies and between covers and carcass. Basic test conditions are in conformity with ISO 36.
It is applicable to all types of construction of conveyor belting with the exception of belts containing steel cord reinforcement, and textile-reinforced belts with a full-thickness tensile strength of less than 160 N/mm. It is not suitable or valid for light conveyor belts as described in ISO 21183-1.

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ISO 7623:2015 specifies a method for determining the bond strength of metal cords to their surrounding coating, either in the initial state or after thermal treatment.
It applies exclusively to metal-carcass conveyor belts.

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ISO 21178:2013 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. ISO 21178:2013 also specifies two test methods for determining the surface resistivity and the volume resistivity.

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This European Standard describes a method of test to determine the propensity of a conveyor belt to generate heat flame or glow when held stationary under a given tension, in surface contact around a rotating driven steel drum.
Means of varying the belt tension are described.
NOTE   For certain belt types, due to their construction, it may not be possible to conduct this test due to the inability of the belt to comply with the requirements of 6.2.3.

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ISO 21183-2:2005 establishes a list of equivalent terms relating to light conveyor belts.

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ISO 7590:2009 specifies three methods for the measurement of total belt thickness and the thickness of covers of steel cord conveyor belts.
Methods A1 and A2 (micrometer methods) can be used for all steel cord conveyor belts for the measurement of both total belt thickness and cover thickness.
Method B (optical method) is recommended for the measurement of cover thickness only. It is not suitable if there is a textile or metal weft, nor if the ends of the steel cords become twisted when cut.

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This Standard specifies a method of test for the measurement of the propagation resistance of an initial tear in textile conveyor belts, either in full thickness or of the carcass only. This test is intended for application to textile belts in installations where there is a risk of longitudinal tearing.

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ISO 15236-3:2007 specifies the performance and constructional requirements applicable to conveyor belts for underground mining having steel cords in the longitudinal direction as reinforcement. The requirements for design and construction apply to the design of single belts as well as the design of complete type series such as those covered in ISO 15236-2.
Steel cord belts in accordance with ISO 15236-3:2007 are intended for use underground in coal mines and in other applications where the highest demands for safety against fire and explosion hazards have to be complied with.

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ISO 703:2007 specifies a test method for determining the transverse flexibility (troughability) of a conveyor belt, expressed as a ratio, F/L. The method is not suitable or valid for light conveyor belts as described in ISO 21183-1.

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ISO 15236-2:2004 specifies preferred types of conveyor belts with steel cords in the longitudinal direction as reinforcement. The belt-type series in ISO 15236-2:2004 are based on the general requirements for construction given in ISO 15236-1.

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ISO 15236-1:2005 specifies the performance and constructional requirements applicable to conveyor belts having steel cords in the longitudinal direction as reinforcement. The requirements for construction given in Clause 6 apply to the design of single belts as well as the design of complete type series such as those covered in ISO 15236-2.

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