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JJF 1786-2019 English PDF

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US$599.00 · In stock
Delivery: <= 6 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 1786-2019: Program of Pattern Evaluation of On-line Automatic Determinators for Chemical Oxygen Demand (COD)
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 1786-2019	599	Add to Cart	6 days	Program of Pattern Evaluation of On-line Automatic Determinators for Chemical Oxygen Demand (COD)	Valid

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Basic data

Standard ID: JJF 1786-2019 (JJF1786-2019)
Description (Translated English): Program of Pattern Evaluation of On-line Automatic Determinators for Chemical Oxygen Demand (COD)
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A61
Classification of International Standard: 17.020
Word Count Estimation: 26,215
Date of Issue: 2019
Date of Implementation: 2020-03-31
Issuing agency(ies): State Administration for Market Regulation

JJF 1786-2019: Program of Pattern Evaluation of On-line Automatic Determinators for Chemical Oxygen Demand (COD)

---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.
Program of Pattern Evaluation of On-line Automatic Determinators for Chemical Oxygen Demand (COD) National Measurement Technical Specification of the People's Republic of China Chemical oxygen demand (COD) online automatic monitor Type evaluation outline Published on December 31,.2019 2020-03-31 Implementation Issued by the State Administration of Market Supervision and Administration Chemical oxygen demand (COD) online automatic Outline of type evaluation of monitor ChemicalOxygenDemand (COD) Focal point. National Technical Committee for Environmental Chemometrics Main drafting unit. Shandong Institute of Metrology Jiangxi Metrology and Testing Institute Shandong Environmental Monitoring Center Station Participated in the drafting unit. China Institute of Test Technology Qingdao Jiaming Measurement and Control Technology Co., Ltd. This specification entrusts the National Environmental Chemometrics Technical Committee to interpret The main drafters of this specification. Sui Feng (Shandong Institute of Metrology) Yang Yuzhe (Jiangxi Metrology and Testing Institute) Liu Wei (Shandong Environmental Monitoring Center Station) Participating drafters. Yun Wang (Shandong Institute of Metrology) Yuan Li (China Institute of Testing Technology) Sen Zhang (Shandong Institute of Metrology) Gao Xingang (Qingdao Jiaming Measurement and Control Technology Co., Ltd.)

Introduction (Ⅱ) 1 Scope (1) 2 References (1) 3 Terminology (1) 4 Overview (1) 5 Legal management requirements (1) 5.1 Requirements for units of measurement (1) 5.2 Logo (2) 6 Measurement requirements (2) 7 General technical requirements (2) 7.1 Appearance and power-on inspection (2) 7.2 Power environment adaptability (2) 7.3 Climate and environment adaptability (2) 7.4 Long-term stability (2) 8 List of Type Evaluation Items (3) 9 Provide the number of prototypes and how to use them (3) 9.1 Number of prototypes provided (3) 9.2 How to use the prototype (3) 10 Test methods and conditions of test items, data processing and qualification criteria (4) 10.1 Legal management requirements (4) 10.2 Measurement requirements (4) 10.3 General technical requirements (6) 11 Table of measuring instruments used in test items (9) 12 Judgment of type evaluation results (10) 13 Type evaluation record format (10) Appendix A COD Standard Solution Preparation and Value Determination Method and Chloride Interference Test Solution Preparation Method (11) Appendix B. Chemical Oxygen Demand (COD) Online Automatic Monitor Type Evaluation Record Format (12)

Introduction

This type evaluation outline is based on JJF 1016-2014 "Guidelines for Compiling Type Evaluation Outline of Measuring Instruments", JJF 1015-2014 "General Specification for Type Evaluation of Measuring Instruments" was written. The technical indicators of this type evaluation outline refer to JJG1012-2019 "Chemical Oxygen Demand (COD) Online Self Dynamic monitor ", GB/T 32208-2015" chemical oxygen demand (COD) measuring instrument ", GB/T 11606-2007 Technical regulations and standards such as "Analytical Instruments Environmental Test Method". This type evaluation outline is released for the first time. Chemical oxygen demand (COD) online automatic monitor Type evaluation outline

1 Scope

This type of evaluation outline is applicable to the measurement equipment classification code of 46361500 and measurement range (16 ~ 1000) mg/L The evaluation of the type of chemical oxygen demand (COD) online automatic monitor.

2 Reference documents

This specification refers to the following documents. GB/T 11606-2007 Environmental testing methods of analytical instruments HJ828-2017 Water quality—Determination of chemical oxygen demand—Dichromate method For dated reference documents, only the dated version applies to this specification; for those without date references The latest version (including all amendments) is applicable to this specification.

3 Terminology

3.1 Chemical oxygen demand chemicaloxygendemand, COD Under the condition of strong acid and heating, the amount of oxidant consumed when the water sample is treated with potassium dichromate as the oxidant. The concentration (mg/L) to express. 3.2 memory effect Also known as the residual effect, the effect of the instrument on the next measurement result after the determination of a standard solution or water sample.

4 Overview

The chemical oxygen demand (COD) online automatic monitor (hereinafter referred to as the instrument) is mainly used to detect domestic sewage, The detection method of COD in industrial waste water and surface water is generally divided into potassium dichromate oxidation-redox drop Determination method, potassium dichromate oxidation-spectrophotometry, potassium dichromate oxidation coulometric titration method, etc. The instrument consists of an automatic sampling unit, It consists of oxidation reaction unit, detection unit, data processing unit and data transmission. The key parts and materials of the instrument are shown in Table 1. Table 1 Key parts and materials table Remarks on the main performance indicators of the serial number project 1 Sampling unit --- according to design requirements 2 Digestion unit --- according to design requirements 3 Testing unit --- according to design requirements

5 Legal management requirements

5.1 Measurement unit requirements The instrument should use the legal unit of measurement. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1786-2019_English be delivered?

Answer: Upon your order, we will start to translate JJF 1786-2019_English as soon as possible, and keep you informed of the progress. The lead time is typically 4 ~ 6 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJF 1786-2019_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1786-2019_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.