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JJG 1060-2010 English PDF

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JJG 1060-2010: Verification Regulation of Low-level Dissolved Oxygen Meters
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Basic data

Standard ID JJG 1060-2010 (JJG1060-2010)
Description (Translated English) Verification Regulation of Low-level Dissolved Oxygen Meters
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A61
Classification of International Standard 17.020
Word Count Estimation 19,163
Date of Issue 2010-09-06
Date of Implementation 2010-12-06
Quoted Standard DL/T 1002-2006; ASTM D5462-2008; ASTM D5543-2009
Regulation (derived from) AQSIQ Announcement No. 100 of 2010
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine
Summary This standard applies to polarographic type of trace oxygen analyzer initial verification, testing and use of follow-up inspection.

JJG 1060-2010: Verification Regulation of Low-level Dissolved Oxygen Meters

---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 Low-level Dissolved Oxygen Meters State verification procedures People's Republic of China Trace Dissolved Oxygen Meter Issued on. 2010-09-06 2010-12-06 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Trace Dissolved Oxygen Meter Verification Regulation enMeters The regulations by the State Administration of Quality Supervision, Inspection and Quarantine approved on September 6, 2010, and from From December 6, 2010 into effect. Focal point. the National Technical Committee stoichiometric physical The main drafting units. China Institute of Metrology Guangxi Academy of measuring and testing Participated in the drafting unit. Jiangsu, days Power Technology Co., 12th Research Institute of China Electronics Technology Group This procedure commissioned the National Technical Committee of the stoichiometric physics responsible for the interpretation The main drafters of this procedure. Repair Hongyu (China Institute of Metrology) Rong Feng can (Guangxi Institute of measurement detection) Drafters participate. Gong Dongyu (Jiangsu Power Technology Co., Ltd., days) Ji Chun-feng (12th Research Institute of China Electronics Technology Group)

table of Contents

1 Scope (1) 2. Referenced Documents (1) 3 Terms (1) 4 Overview (1) 5 metering performance requirements (2) 6 General Requirements (2) 6.1 Appearance (2) 6.2 Dissolved Oxygen Sensor (2) 7 control of measuring instruments (3) 7.1 test conditions (3) 7.2 test items and test methods (3) 7.3 Verification Results Processing (5) 7.4 test cycle (5) Uncertainty Principle and Evaluation (6) Appendix A Faraday standard water electrolysis oxygen generating apparatus B oxygen-free water preparation method Appendix (9) C pure water saturated dissolved oxygen concentration appendix (10) Appendix D test original record format (11) Appendix E test certificate-page format (13) Appendix F test results in the notice page format (14) Trace Dissolved Oxygen Meter Verification Regulation

1 Scope

The order applies to polarographic type trace oxygen analyzer initial verification, subsequent verification and in-service inspection.

2 Citations

The regulations cited in the following documents. DL/T 1002-2006 Trace Dissolved Oxygen meter Calibration standard gas calibration method --- ASTMD5462-2008 StandardTestMethodforOn-lineMeasurementofLow-level DissolvedOxygeninWater (Trace oxygen line measurement standard Standard Test Method) ASTMD5543-2009 StandardTestMethodsforLow-levelDissolvedOxygenin Water (Standard Test Method for Trace Dissolved Oxygen) When using this procedure, it should pay attention to using the currently valid version of the documents cited.

3 Terms

3.1 Anaerobic water zerodissolved-oxygen (DO) water Oxygen-free water. Dissolved Oxygen meter is usually used for zero calibration. 3.2 oxygen bottom water backgrounddissolved-oxygen (DO) water This refers to the standard bottom oxygen dissolved oxygen generator did not produce oxygen, the residual dissolved oxygen testing circuit, through Commonly used to evaluate the test circuit tightness and barrier. The bottom oxygen water test loop refers dissolved oxygen of the water bottom. 3.3 standard oxygen water standarddissolved-oxygen (DO) water Dissolved oxygen standard refers to a standard means for generating standard DO happen. Standard oxygen water test loop refers to a solution Standard oxygen water.

4 Overview

Trace oxygen analyzer is widely used in electrical, electronic, chemical and other industries measured dissolved oxygen concentration of process water Amount, usually by the DO sensor (or oxygen sensor) and an electronic unit (or secondary instrument) components. Polarographic Type trace oxygen analyzer (hereinafter referred to as instruments) electrochemical Polarographic sensor 0 ~ 100μg · L-1 Dissolved oxygen in the range, which works as follows. cathodic polarographic sensors usually gold or platinum, multi-anode Silver (also other metals such as lead), a selective oxygen permeable membrane permeable to oxygen. When a water sample flows through the oxygen sensor, Water samples in oxygen to diffuse through the membrane selective gas permeable membrane, under the effect of dissolved oxygen molecules in the polarization voltage is dissolved Reducing the oxygen sensor to generate a response current. At a certain temperature, in response to the current size of the dissolved oxygen concentration was positively ratio. In response to the current through the data processing showed dissolved oxygen concentration on the display. On the cathode, oxygen is reduced to hydroxide. O2 2H2 → O 4e 4OH-

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