GB/T 25477-2010Anti-corrosion magnetic trurning column fluid level gauge (English PDF)

1 Scope

This standard specifies the types and basic parameters, technical requirements and test methods for corrosion magnetic level gauge turned column (hereinafter referred to as level gauge), the

Inspection rules and signs, packaging, transportation and storage.

This standard applies to all-tight lining of polytetrafluoroethylene (PTFE) material is a corrosion barrier layer (hereinafter referred to as the spacer layer) level gauge, the liquid

Level meter is suitable for acid, alkali, strong corrosive liquid level detection and control.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent

Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research

Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

GB 150-1998 Steel Pressure Vessels

GB/T 191 Packaging - Pictorial signs (GB/T 191-2008, ISO 780.1997, MOD)

GB/T 7993-2003 high voltage test method under corrosive conditions of glass-lined equipment (ISO 2746.1998, IDT)

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

GB/T 20730.1 industrial process control systems with two or more analog input output instrumentation - Part 1. Methods of evaluating performance (GB/T 20730.1-2006, IEC 61003-1.2004, IDT)

GB/T 25480 Instrumentation transportation, storage and basic environmental conditions and test methods

HG20536-1993 PTFE lining equipment

JB/T 4730-2005 Nondestructive Testing of Pressure Equipments

QB/T 3624-1999 polytetrafluoroethylene tube

QB/T 3625-1999 PTFE sheet

3 Types and basic parameters

Type 3.1