Contents
Introduction
1 Scope
2 References
3 Summary
4 Technical materials and experimental prototype submitted by applicant
4.1 Technical materials
4.2 Experimental prototype
5 Legal regulatory requirements
5.1 Requirements for measuring units
5.2 Requirements for degree of accuracy (maximum permissible error)
5.3 Requirements for identifications of legal metrology and measuring instruments
6 Measurement requirements
6.1 Zero point deviation
6.2 Response time
6.3 Indication error of dissolved-oxygen concentration
6.4 Repeatability
6.5 Temperature indication error
6.6 Salinity compensating error
7 General technical requirements
7.1 Appearance
7.2 Flexibility of power voltage
7.3 Safety and environmental requirements
7.4 Zero point deviation test at rated operating temperature
7.5 Basic environmental conditions test for transportation and storage
8 Pattern evaluation items list
9 Items test methods and conditions
9.1 Appearance
9.2 Zero point deviation
9.3 Response time
9.4 Indicating error of dissolved oxygen concentration
9.5 Repeatability
9.6 Temperature indicating error
9.7 Salinity compensating error
9.8 Flexibility of power voltage
9.9 Insulation resistance
9.10 Insulation strength
9.11 Zero point deviation at rated operating temperature
9.12 Basic environmental conditions for transportation and storage
10 Judge and manage the results of pattern evaluation
11 Raw recording format of pattern evaluation
Appendix A The preparation of experimental water
Appendix B Structure drawing of device used for preparing experimental water
Appendix C The saturation concentration of oxygen at different temperatures
Appendix D Saturated vapor pressure of pure water at different temperatures
Appendix E Raw recording format of pattern evaluation of dissolved oxygen meter with covered-membrane-electrode
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