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BS EN ISO 21178:2020

BS EN ISO 21178:2020

$142.49

Light conveyor belts. Determination of electrical resistances

Published By Publication Date Number of Pages
BSI 2020 30
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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.

PDF Catalog

PDF Pages PDF Title
2 National foreword
4 European foreword
7 Foreword
9 1 Scope
2 Normative references
3 Terms and definitions
10 4 Symbols
5 Electrical surface resistances
5.1 Method A: Measurement of surface resistance, ROA, omni-directionally
5.1.1 Applicability
5.1.2 Principle
5.1.3 Apparatus (see Figure 1)
12 5.1.4 Test piece
13 5.1.5 Procedure
14 5.1.6 Expression of results
5.1.7 Test report
5.2 Method B: Measurement of surface resistance ROB in longitudinal and transverse directions
5.2.1 Applicability
5.2.2 Principle
5.2.3 Apparatus (see Figure 4)
16 5.2.4 Test piece
17 5.2.5 Procedure
5.2.6 Expression of results
5.2.7 Test report
6 Electrical surface resistivity ρs
6.1 General
18 6.2 Principle
6.3 Apparatus
19 6.4 Test piece
6.4.1 Material
6.4.2 Dimensions
6.4.3 Number
6.4.4 Cleaning
6.4.5 Conditioning
20 6.4.6 Preparation
6.5 Procedure
6.6 Expression of results
6.7 Test report
7 Electrical volume resistances
7.1 Volume resistance, RD, perpendicular to plane of belt
7.1.1 Principle
7.1.2 Apparatus
21 7.1.3 Test piece
22 7.1.4 Procedure
7.1.5 Expression of results
7.1.6 Test report
23 7.2 Volume resistance, RDi, in longitudinal and transverse directions parallel to plane of belt
7.2.1 Principle
7.2.2 Apparatus
24 7.2.3 Test piece
25 7.2.4 Procedure
26 7.2.5 Expression of results
7.2.6 Test report
8 Electrical volume resistivity, ρD
8.1 Procedure
8.2 Expression of results
8.3 Test report
28 Bibliography

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BS EN ISO 21178:2020
$142.49