GB/T 20245.3-2013Expression of performance of electrochemical analyzers -- Part 3: Electrolytic conductivity (English PDF)

Foreword

GB/T 20245 "performance of electrochemical analyzers" is divided into the following five sections.

--- Part 1. General;

Part --- Article 2. pH value;

--- Part 3. electrolyte conductivity;

--- Part 4. using coated current sensor measurement of dissolved oxygen;

--- Part 5. redox potential.

This section GB/T 20245 Part 3.

This section drafted in accordance with the rules of GB/T 1.1-2009 and GB/T 20000.2-2009 given.

This section uses the translation method is equivalent to using IEC 60746-3:2002 "performance of electrochemical analyzers - Part 3. electrolyte Conductivity " Consistency correspondence between this part of international documents and normative references of our files are as follows.

--- GB/T 19001-2008 quality management system requirements (ISO 9001:2008, IDT) for ease of use, this section made the following editorial changes.

--- GB/T 20245.3 standard text used in "this part of GB/T 20245 of" instead of "IEC 60746 Part of the present";

--- Decimal symbol used in place of ",". ",";

--- Incorporates errata content IEC 60746-3 1;

--- Delete international standards foreword.

Please note that some of the content of this document may involve patents. Release mechanism of the present document does not assume responsibility for the identification of these patents.

This part is proposed by China Machinery Industry Federation.

This part of the measurement and control of Standardization Technical Committee (SAC/TC124) is administered by the National industrial processes.

This section drafted by. China Instrument Industry Association, Shanghai Electronics Science Instrument Co., Ltd., Sichuan-Chongqing Analytical Instruments have Limited, China Institute of Metrology, Hailei magnetic sensor Technology Co., Ltd., Shanghai Measurement and Testing Technology Research Institute, Beijing metering Detection Research Institute, FPI (Hangzhou) Co., Ltd., Beijing Analytical Instrument Institute.

1 Scope

GB/T 20245 purpose of this section is.

--- Require manufacturers description for term solution conductivity analyzer, sensor unit and electronics unit of measurement, definitions and Claim;

--- Such analyzer, performance test methods sensor unit and electronic unit of the establishment;

--- Provide basic document for the ISO 9001, ISO 9002 and ISO 9003 quality management standard applications.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 20245.1-2006 performance of electrochemical analyzers represent - Part 1. General (IEC 60746.1:2003, IDT) ISO 9001 quality management system requirements (Qualitymanagementsystems-Requirements) Quality assurance model ISO 9002 quality system of production, installation and service (Qualitysystems-Modelforquality assuranceinproduction, instalationandservicing) ISO 9003 quality system for final inspection and test quality assurance model (Qualitysystems-Modelforquality assuranceinfinalinspectionandtest)

3 Terms and Definitions

GB/T 20245.1-2006 and as defined in the following terms and definitions apply to this document.

Electrolyte conductivity electrolyticconductance in the electrolytic cell filled with a liquid, the potential difference between the conductance of the electrolyte at the ratio of the ion current and the charge movement at both ends, see Formula (1).

G = IU

Where.

G --- electrolyte conductivity is measured in siemens (S);

I --- the current flowing through the electrolyte, in amperes (A);

U --- the potential difference across the electrodes, in volts (V).

Electrolyte resistance is the reciprocal of conductance electrolyte in ohms (ohm).

Electrolyte conductivity electrolyticconductivity Conductivity of the electrolyte, formerly known as conductivity, (2) is defined by the formula.

k = jE