GB/T 31425-2015Specifications for determinator of sulfur by coulometric titration (English PDF)

1 Scope

This standard specifies the Coulomb sulfur analyzer (hereinafter referred to as sulfur analyzer) technical requirements, test methods, inspection rules, logo and packaging, transport and

Storage and so on.

This standard applies to Coulomb sulfur analyzer.

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 191 Packaging - Pictorial signs

Determination of total sulfur in GB/T 214 coal

GB/T 2828.1 Sampling procedures for inspection - Part 1. by acceptance quality limit (AQL) retrieval batch inspection sampling plan

GB 4793.1 measurement, control and laboratory safety requirements for electrical equipment - Part 1. General requirements

GB/T 13384 mechanical and electrical products packaging General technical conditions

GB/T 15479 Industrial Automation Instrumentation insulation resistance, dielectric strength technical requirements and test methods

3 The basic structure of the instrument

Coulomb sulfur analyzer consists of a tubular high-temperature furnace, electrolytic cell and a magnetic stirrer, air supply and purification devices, Coulomb integrator, sample program

Parts controller, as shown in FIG.

Explanation.

1 --- controller;

2 --- push rod;

3 --- Reducing the combustion tube;

4 --- tubular high-temperature furnace;

5 --- quartz tray;

6 --- magnetic stirrer;

7 --- electrolytic cell;

8 --- indicator electrode;

. 9 --- electrolysis electrodes;

10 --- combustion boat;

. 11 --- air supply and purification devices.

Figure 1 Coulomb sulfur analyzer basic structure of FIG.