JJF 1516-2015Calibration Specification for Electrical Conductivity Standards of Nonferrous Metals (English PDF)

1 Scope (1)

2 References (1)

3 Terminology and units of measurement (1)

4 Overview (2)

5 Metrological characteristics (2)

6 Calibration conditions (3)

Environmental conditions 6.1 (3)

7 Calibration items and calibration methods (3)

8 Calibration results expression (6)

9 Recalibration interval (7)

Appendix A Measurement Uncertainty Example (8)

Appendix B non-ferromagnetic metal-like conductivity reference blocks DC setting system (12)

Appendix C calibration original record format (14)

Appendix D calibration certificate within the page format (16)

Introduction

This specification based JJF 1071-2010 "National Calibration Specifications writing rules", JJF 1059.1-2012 "Evaluation and Expression of Uncertainty in Measurement" establishment.

This specification with reference to the relevant provisions of the following international standards.

ASTMB193 conductive material resistivity measurement method (StandardTestMethodforResistivityof ElectricalConductorMaterials) ASTME1004-09 eddy conductivity material determination [StandardTestMethodforDetermining ElectricalConductivityUsingtheElectromagnetic (Eddy-Current) Method] Aluminum EN2004-7 Aerospace series of test methods and aluminum alloy products - Part 7. aluminum and aluminum alloy electric Conductivity Measurement equipment calibration standard specimens (Aerospaceseriestestmethodforaluminumandalumi-numaloyproductsPart 7. Referenceblocksforthecalibrationofmeasuringequipment usedinthedeterminationofelectricalconductivityofwroughtaluminumandaluminum aloys) this specification is the first release.

Non-ferromagnetic metal-like conductivity (marked) block Calibration Specification

1 Scope

This standard applies to the calibration of non-ferromagnetic metal (alloy) Conductivity sample (standard) block (hereinafter referred to as specimens), calibration the conductivity in the range of 0.5% IACS ~ 101% IACS or 0.3MS/m ~ 58.6MS/m.

2. References

This specification refers to the following documents.

ASTM E 1004-09 Determination of material eddy conductivity [Standard Test Methodfor DeterminingElectricalConductivityUsingtheElectromagnetic (Eddy-Current) Method] ASTMB193-02 (Reapproved2008) conductive material resistivity measurement method (StandardTest MethodforResistivityofElectricalConductorMaterials) Aluminum EN2004-7 Aerospace series of test methods and aluminum alloy products - Part 7. aluminum and aluminum alloy electric Conductivity Measurement equipment calibration standard specimens (Aerospaceseriestestmethodforaluminumandalumi-numaloyproductsPart 7. Referenceblocksforthecalibrationofmeasuringequipment usedinthedeterminationofelectricalconductivityofwroughtaluminumandaluminum aloys) for dated references, only the dated edition applies to this specification; undated reference documents Member, the latest edition (including any amendments) applies to this specification.

3 terminology and units of measurement

3.1 International Annealed Copper Standard (IACS) when the temperature is 20 °C, when a uniform cross-section S of 1mm2, 1m length of copper wire has a resistance R (1/58) when ohm, defined as 100% IACS, is calculated as equation (1).

sigma =

Where.

--- conductivity [sigma], S/m;

rho --- resistivity, ohm · m;

S --- copper cross-section, mm2;

R --- Resistance, ohm.

Therefore, by definition 100% IACS = 1m 1mm2

· 1 (1/58) ohm = 58m / (ohm · mm2) = 58MS/m the 1MS/m = 58% IACS~1.72413% IACS