GB/T 25104-2019Automatic measurement of water content in crude oil—RF method (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This standard replaces GB/T 25104-2010 "Automatic determination of crude oil water content radio frequency method", compared with GB/T 25104-2010 The technical changes are as follows.

--- Add warning content before the standard text;

--- Added "storage tank storage" method and re-rhelms the statement (see Chapter 1);

--- Added GB 3836.9, GB/T 8929 as a normative reference document (see Chapter 2);

--- Added the terms and definitions of "oil phase point" and "water phase point" (see Chapter 3);

--- Added the description of "the electromagnetic wave frequency is between 300kHz~300GHz" (see 4.1);

--- Added a description of the use of "the water content measured by this standard can be used for the calibration of crude oil during the measurement and transfer" (see 4.2);

--- "Measurement frequency" is changed to "sampling period" (see 5.2.2);

--- Increased the requirements of GB 3836.9 (see 5.3.1);

--- Added "tuning of the instrument" content (see Chapter 11).

1 Scope

This standard specifies the method for automatic determination of crude oil water content by radio frequency method.

This standard is applicable to the automatic determination of the water content of crude oil in pipeline transportation, tanker transportation and storage tank storage.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB 3836.1 Explosive atmosphere - Part 1: General requirements for equipment

GB 3836.2 Explosive atmospheres - Part 2: Equipment protected by flameproof enclosure "d"

GB 3836.4 Explosive atmospheres - Part 4: Equipment protected by intrinsically safe "i"

GB 3836.9 Explosive atmospheres - Part 9: Equipment protected by encapsulated "m"

GB/T 8929 Determination of water content of crude oil

3 Terms and definitions

The following terms and definitions apply to this document.

4 Summary of basic principles and methods