JJG 950-2012 English PDFUS$629.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email. JJG 950-2012: Verification Regulation of Analyzers for Oil Content in Water Status: Valid JJG 950: Historical versions
Basic dataStandard ID: JJG 950-2012 (JJG950-2012)Description (Translated English): Verification Regulation of Analyzers for Oil Content in Water Sector / Industry: Metrology & Measurement Industry Standard Classification of Chinese Standard: A60 Classification of International Standard: 17.020 Word Count Estimation: 27,266 Older Standard (superseded by this standard): JJG 950-2000 Adopted Standard: ASTM D3921-1996, NEQ Regulation (derived from): AQSIQ Announcement No. 96 of 2012 Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine Summary: This standard applies to the principle of infrared spectrophotometry concentration of oil in water analyzer's initial verification, testing and use of follow-up checks. JJG 950-2012: Verification Regulation of Analyzers for Oil Content in Water---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.Verification Regulation of Analyzers for Oil Content in Water State verification procedures People's Republic of China Oil in water concentration analyzer Issued on. 2012-06-18 2012-12-18 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Oil in water concentration analyzer Verification Regulation Analy Replacing JJG 950-2000 Focal point. the National Technical Committee on Environment stoichiometry Main drafting unit. Beijing Institute of Metrology detection Participated in the drafting unit. Beijing, Charcot a Instrument Technology Co., Ltd. Henan Institute of Metrology Foshan Analyzer Ltd. This procedure commissioned the National Technical Committee of the stoichiometric environment responsible for interpreting The main drafters of this procedure. Chen Zhengsheng (Beijing Institute of Metrology detection) Zhang Baozhu (Beijing Institute of Metrology detection) Drafters participate. Li Zi Cong (Beijing Institute of Metrology detection) Zhang Xinmin (Beijing, Charcot a Instrument Technology Co., Ltd.) Zhu Qian (Henan Institute of Metrology) Ye are one thousand (Foshan Analyzer Ltd.) table of ContentsIntroduction (Ⅱ) 1 Scope (1) 2 Overview (1) 3 metering performance requirements (1) 3.1 A class of instrument (1) 3.2 B class equipment (1) 4 General Requirements (2) 4.1 Appearance (2) 4.2 Insulation Resistance (2) 5 control of measuring instruments (2) 5.1 verification Conditions (2) 5.2 Verification Project (3) 5.3 Verification Methods (3) 5.4 Verification Results Processing (6) 5.5 test cycle (6) Appendix A test recording format (A type instrument) (7) Appendix B test recording format (Class B equipment) (9) Appendix C test certificate page format (A type instrument) (11) Appendix D test certificate page format (Class B instruments) (13) Appendix E test results in the notice page format (A type instrument) (15) Appendix F test results in the notice page format (B equipment category) (17) G carbon tetrachloride purification and testing methods Appendix (19)IntroductionJJG 950-2012 is JJG 950-2000 revised version. Compared with JJG 950-2000, except Editorial changes outside the main technical changes are as follows. --- Increased introduction; --- This procedure is in accordance with the measured infrared GB/T 16488-1996 "water quality oil and animal and vegetable oils light Degree Law "oil in water concentration analyzer analysis methods were developed; --- Increased infrared spectrophotometry instrument test content; --- Added Appendix carbon tetrachloride purification and test methods; --- The procedures referenced ASTMD3921-96 "oil, grease and petroleum hydrocarbons in water Standard Test Law "(StandardTestMethodforOilandGreaseandPetroleumHydrocarbonsinWater). Oil in water concentration analyzer test procedures1 ScopeThe order applies to the principles of the water by infrared spectrophotometry oil concentration analyzer initial verification, use and subsequent verification Check.2 OverviewOil in water by infrared spectrophotometry concentration analyzer (hereinafter referred to as the oil content analyzer) is based on the molecules of the substance in the infrared region Characteristic absorption spectra and Lambert - Beer law, the extracted oil in water measurement points after the instrument. Water and oil through tetrachloride Carbon extraction in the wave number of 2930cm-1 (CH2 groups CH bond stretching vibration), 2960cm-1 (Stretching vibration CH3 groups CH bond) and 3030cm-1 (aromatic CH bond stretching vibration) All or part of the characteristic absorption bands, carbon tetrachloride extraction agent in the feature area no absorption peaks characteristic absorption material Mainly oil, animal and vegetable oils, and its content from the absorbance at the characteristic bands are calculated. Oil Analyzer into infrared spectrophotometry oil content analyzer (hereinafter referred to as Class A equipment) and non-dispersive infrared spectrophotometric measurement Oil meter (hereinafter referred to as Class B instruments) categories. A class instrument, you can wave number scanning, quantitative measurement of oil in multiple infrared absorption characteristics, such as the wave number 2930cm-1,2960cm-1 and characteristic peaks at 3030cm-1 is. Such equipment by using the experimental method is divided into Room, three kinds of portable and on-line. Class B instruments fixed wave number, usually only the feature 2930cm-1 absorption at 3.4μm or measured.3 metering performance requirements3.1 A class instrument 3.1.1 Indication error Measuring range ≤10mg/L, the indication error does not exceed ± 0.8mg/L; Measuring range > 10mg/L, the indication error does not exceed ± 8%. 3.1.2 Repeatability Not more than 2% repeatability. 3.1.3 Drift Laboratory equipment, portable instruments continuously running 30min, online instrument run continuously 3h, zero drift does not exceed Over ± 0.5mg/L, show drift of no more than ± 5%. 3.1.4 The minimum detectable concentration The minimum detectable concentration of not more than 0.5mg/L. 3.1.5 Effect of the supply voltage Using alternating current equipment, when the power supply voltage variation is within ± 10% of rated voltage, showing the value of the instrument error The difference shall meet the requirements of 3.1.1. 3.2 Class B instruments ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of JJG 950-2012_English be delivered?Answer: Upon your order, we will start to translate JJG 950-2012_English as soon as possible, and keep you informed of the progress. 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Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version JJG 950-2012?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJG 950-2012 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
