1 Scope
2 Normative references
3 Direct reading dial type liquid level indicators
3.1 General
3.2 Electrical characteristics of switch
3.3 Tests
4 Liquid pressure gauges - Differential pressure gauges
4.1 General
4.2 Electrical characteristics of switch
4.3 Tests
5 Liquid flow indicators
5.1 General
5.2 Electrical characteristics of switch
5.3 Tests
6 Pressure relief devices
6.1 General
6.2 Operating limits
6.3 Dimensions
6.4 Operating performance
6.5 Manufacturing features
6.6 Tests
7 Dehydrating breathers
7.1 General
7.2 Selection criteria
7.3 Fixing arrangement and overall dimensions
7.4 Breather components
7.5 Requirements
7.6 Mounting arrangement
7.7 Tests