1 Scope
This standard specifies the basic parameters, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of hydraulic fluid-pressure switch ("hereinafter referred to as "pressure switch").
This standard is applicable to the thread connected and plate connected pressure switch with hydraulic fluid or other liquids of equivalent property as the working medium.
2 Normative References
The provisions contains in the following normative documents which, through reference in this text, shall constitute provisions of this standard. For dated references, subsequent amendments (excluding corrigendum content) to, or revisions of, any of these publications do not apply. However, the parties enter into an agreement according to this standard are encouraged to study whether the latest edition of these documents can be used. For undated references, the latest edition of the normative document referred to applies.
Contents
1 Scope
2 Normative References
3 Terms and Definitions
4 Dimension, Symbols and Units
5 Mark and Basic Parameters
5.1 Marking
5.2 Basic Parameters
6 Technical Requirements
6.1 General Requirements
6.2 Performance Requirements
6.3 Assembling Requirements
6.4 Appearance Requirements
7 Performance Test Methods
7.1 Test Device
7.2 Test Conditions
7.3 Test Items and Test Methods
8 Assembly and Appearance Inspection
9 Inspection Rules
9.1 Inspection Classification
9.2 Sampling
9.3 Judgment Rules
10 Marking, Packaging, Transportation and Storage
Appendix A (Normative) Test Circuit and Characteristic Curve
A.1 Test circuit
A.2 Characteristic curve
