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JJF 1441-2013: Program of Pattern Evaluation of Dissolved Oxygen Meter With Covered-Membrane-Electrode Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
JJF 1441-2013: Program of Pattern Evaluation of Dissolved Oxygen Meter With Covered-Membrane-Electrode---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/JJF1441-2013 JJF National Metrology Technical Specifications of the People's Republic of China Program of Pattern Evaluation of Dissolved Oxygen Meter with Issued on: NOVEMBER 28, 2013 Implemented on: FEBRUARY 28, 2014 Issued by. State Administration for Quality Supervision and Inspection and Quarantine Program of Pattern Evaluation of Dissolved Oxygen Meter With Covered-Membrane-Electrode This program is under the jurisdiction of. National Metrology Technical Committee on Environmental Chemistry. This program is drafted by. Zhejiang Province Institute of Metrology The organizations participating in drafting this program are. Shanghai Institute of Measurement and Testing; Shanghai Precision and Scientific Instrument Co., Ltd; National Institute of Measurement and Testing Technology Main drafters of this program. Xu Yuanyuan (Zhejiang Province Institute of Metrology) Shen Wenjing (Zhejiang Province Institute of Metrology) Zhang Yanquan (Zhejiang Province Institute of Metrology) Drafters participating in drafting this program. Wang Zhentao (Shanghai Institute of Measurement and Testing) Jin Chunfa (Shanghai Precision and Scientific Instrument Co., Ltd) Yuan Li (National Institute of Measurement and Testing Technology) Table of ContentsIntroduction... 5 1 Scope... 6 2 References... 6 3 Summary... 6 4 Technical materials and experimental prototype submitted by applicant... 6 4.1 Technical materials... 6 4.2 Experimental prototype... 6 5 Legal regulatory requirements... 7 5.1 Requirements for measuring units... 7 5.2 Requirements for degree of accuracy (maximum permissible error)... 7 5.3 Requirements for identifications of legal metrology and measuring instruments... 7 6 Measurement requirements... 7 6.1 Zero point deviation... 7 6.2 Response time... 7 6.3 Indication error of dissolved-oxygen concentration... 7 6.4 Repeatability... 8 6.5 Temperature indication error... 8 6.6 Salinity compensating error... 8 7 General technical requirements... 8 7.1 Appearance... 8 7.2 Flexibility of power voltage... 8 7.3 Safety and environmental requirements... 8 7.4 Zero point deviation test at rated operating temperature... 9 7.5 Basic environmental conditions test for transportation and storage... 9 8 Pattern evaluation items list... 9 9 Items test methods and conditions... 10 9.1 Appearance... 10 9.2 Zero point deviation... 11 9.3 Response time... 11 9.4 Indicating error of dissolved oxygen concentration... 12 9.5 Repeatability... 13 9.6 Temperature indicating error... 14 9.7 Salinity compensating error... 15 9.8 Flexibility of power voltage... 16 9.9 Insulation resistance... 17 9.10 Insulation strength... 17 9.11 Zero point deviation at rated operating temperature... 18 9.12 Basic environmental conditions for transportation and storage... 19 10 Judge and manage the results of pattern evaluation... 20 11 Original record format of pattern evaluation... 21 Annex A Preparation of Water for Verification... 22 Annex B Structural Drawing of Device for Verification Water Preparation... 23 Annex C The saturation concentration of oxygen at different temperatures... 24 Annex D Saturated vapor pressure of pure water at different temperatures... 25 Annex E Original record format of pattern evaluation of dissolved oxygen meter with covered-membrane-electrode... 26IntroductionThis Program-of-Pattern-Evaluation is Formulated according to the provisions of JJF 1015 General Specifications for Pattern Evaluation and Approval of Measuring Instruments, JJF 1016 Guidelines for Pattern Evaluation of Measuring Instruments, and JJF 1001 Terms and Definitions of General Metrology. The technical indexes of this Program-of-Pattern-Evaluation take reference from JJG 291-2008 Dissolved Oxygen Meter with Covered-Meter-Electrode, GB/T 11606-2007 Methods for Environmental Test of Analytical Instruments, HJ 506-2009 Water Quality, Determination of Dissolved Oxygen, Electrochemical Probe Method. This Program-of-Pattern-Evaluation is issued for fist-time. Program of Pattern Evaluation of Dissolved Oxygen Meter With Covered-Membrane-Electrode1 ScopeThis program is applicable to the pattern evaluation of laboratory and portable dissolved oxygen meter (hereafter referred to as meter) with measuring range of (0~20) mg/L.2 ReferencesJJG 291-2008 Dissolved Oxygen Meter with Covered-Meter-Electrode GB/T 11606-2007 Methods for Environmental Test of Analytical Instruments HJ 506-2009 Water Quality, Determination of Dissolved Oxygen, Electrochemical Probe Method The articles contained in above documents have become part this Standard when they are quoted herein. For the dated documents so quoted, all the modifications (excluding corrections) or revisions made thereafter shall not be applicable to this Standard. For the undated documents so quoted, the latest editions shall be applicable to this Standard.3 SummaryThe meter used for determining constant concentration of dissolved oxygen (DO) in water generally consists of oxygen electrode with covered-membrane, electronic unit and display.4 Technical materials and experimental prototype submitted by applicant4.1 Technical materials a) Photos of prototype; b) Enterprise product standard (including test methods); c) General assembly drawing, main parts drawing and circuit diagram; d) Operation Manual; e) Test report provided by research organization or technical institute. 4.2 Experimental prototype Application organization shall provide the prototype produced by themselves. Applicants can submit applications for single product or a series of products. For single product, applicants shall provide 3 prototypes. For a series of products, applicants shall provide one third of representative standardized products in each series. The number of prototypes of each specification shall be in accordance with the principles of single product application. If the required number of prototypes is too many according to the above principles, applicants can make an appropriate reduction on the number of each representative prototype.5 Legal regulatory requirements5.1 Requirements for measuring units Adopt legal measuring units. 5.2 Requirements for degree of accuracy (maxim... ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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