1 Scope
This standard specifies the terms, composition and principle, general provisions, technical requirements, test methods, inspection rules, marking, packing, transport and storage conditions with regards to the verification facilities of heat meters.
This standard is applicable to the verification facilities using water as flow media, at DN15mm~DN250mm in aperture and at a pressure not greater than 2.5MPa.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendment) applies.
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 Composition and Principle
5 General Provisions
6 Technical Requirements
7 Test Methods
8 Inspection Rules
9 Marking, Packing, Transport and Storage
Appendix A (Normative) Test and Verification for the Expanded Uncertainty of Standard Test System for Hot Water Flow-rate during Measuring the Total Volume
Appendix B (Normative) Test and Verification for the Expanded Uncertainty of Standard Test System for Temperature Difference during Measuring the Temperature Difference
Appendix C (Normative) Test and Verification for the Expanded Uncertainty of Standard Test System for Calculator during Calculating the Heat
Appendix D (Normative) Combined Verification for the Expanded Uncertainty of Verification Facilities during Measuring the Heat
Appendix E (Normative) Calculation of Total Volume in the Adoption of Mass Method and Master Meter Method
