1 Scope
This Regulation is applicable to the initial verification, subsequent verification and examination in service of pressure type SF6 gas density monitors or gas density relay (hereinafter referred to as instrument) with measuring range of (-0.1~0.9) Mpa, the bourdon tube as measuring element, with temperature compensating device and contact output function.
1 Scope 1
2 Normative References 1
3 Terms and Definitions 1
4 General 2
5 Requirements for Metrological Performance 2
5.1 Accuracy Grade and Indication Error 2
5.2 Hysterisis Error 2
5.3 Zero Error 2
5.4 Rated Pressure Value Error 3
5.5 Tapping Displacement 3
5.6 Tightness 3
5.7 Stationarity of Throw of Pointer 3
5.8 Set-point Deviation and Switching Deviation 3
5.9 Temperature Compensation Error 3
6 General Technical Requirements 4
6.1 Surface Structure 4
6.2 Insulation Resistance 4
6.3 Dielectric Strength 4
7 Measuring Devices Control 5
7.1 Verification Condition 5
7.2 Verification Item 5
7.3 Verification Methods 6
7.4 Verification Results Processing 7
7.5 Verification Period 8
Appendix A Record Format of SF6 Gas Density Controller 9
Appendix B Format of Inside Page of Verification Certificate 11
Appendix C Format of Inside Page of Verification Result Notice 12
Standard
JJG 1073-2011 Pressure Type SF6 Gas Density Monitors (English Version)
1 Scope
This Regulation is applicable to the initial verification, subsequent verification and examination in service of pressure type SF6 gas density monitors or gas density relay (hereinafter referred to as instrument) with measuring range of (-0.1~0.9) Mpa, the bourdon tube as measuring element, with temperature compensating device and contact output function.
Contents of JJG 1073-2011
1 Scope 1
2 Normative References 1
3 Terms and Definitions 1
4 General 2
5 Requirements for Metrological Performance 2
5.1 Accuracy Grade and Indication Error 2
5.2 Hysterisis Error 2
5.3 Zero Error 2
5.4 Rated Pressure Value Error 3
5.5 Tapping Displacement 3
5.6 Tightness 3
5.7 Stationarity of Throw of Pointer 3
5.8 Set-point Deviation and Switching Deviation 3
5.9 Temperature Compensation Error 3
6 General Technical Requirements 4
6.1 Surface Structure 4
6.2 Insulation Resistance 4
6.3 Dielectric Strength 4
7 Measuring Devices Control 5
7.1 Verification Condition 5
7.2 Verification Item 5
7.3 Verification Methods 6
7.4 Verification Results Processing 7
7.5 Verification Period 8
Appendix A Record Format of SF6 Gas Density Controller 9
Appendix B Format of Inside Page of Verification Certificate 11
Appendix C Format of Inside Page of Verification Result Notice 12
