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Air specifications - ISO 8573.1 standard
The standard provides a uniform way to specify air quality in terms of particle size, pressure
dewpoint, and oil content.
Class 2-4-3 means class 2 particulate, class 4 dewpoint, and class 3 oil content.
(1 micron particulate, 37 °F dewpoint, 1 mg/m
3
oil content) (maximums)
The following table lists the maximum contaminations in each category.
Quality Class Particle size in microns Pressure dewpoint Oil content
1 0.1
–70 °c (–57°F)
0.01 mg/m
3
21
–40 °c (–40°F)
0.1 mg/m
3
35
–20 °c (–4°F)
1 mg/m
3
415
+3 °c (37°F)
5 mg/m
3
540
+7 °c (45°F)
25 mg/m
3
Connections
The customer must provide:
Hose, regulator, and fittings for the dust collector.
Hose and fittings for the machine.
Laser pre-mixed gas (see page 9)
Assist gas (oxygen minimum) (see page 10)
8 LC3015 Theta User Installation Guide - October, 2003