Gas quality and pressure requirements
Quality Grade** Pressure +/- 10% Flow rate
O
2
Oxygen* 99.5% pure G 827 kPa / 8.3 bar 4250 l/h 150 scfh
Clean, dry, oil-free 120 psi
N
2
Nitrogen* 99.99% pure E 827 kPa / 8.3 bar 9910 l/h 350 scfh
Clean, dry, oil-free 120 psi
Air* *** Clean, dry, oil-free per K 827 kPa / 8.3 bar 9910 l/h 350 scfh
ISO 8573-1 Class 1.2.2 120 psi
H35 99.995% pure Ar = A 827 kPa / 8.3 bar 4250 l/h 150 scfh
Argon-hydrogen (H35 = 65% Argon, 35% Hydrogen) H
2
= A 120 psi
F5 99.98% pure N
2
= E 827 kPa / 8.3 bar 4250 l/h 150 scfh
Nitrogen-hydrogen (F5 = 95% Nitrogen, 5% Hydrogen) H
2
= A 120 psi
SPECIFICATIONS
2-4 HPR260 Manual Gas Instruction Manual
6
Mild steel Stainless steel Aluminum
Gas types Plasma Shield Plasma Shield Plasma Shield
Cutting 30 to 50 A O
2
O
2
N
2
& F5 N
2
Air Air
Cutting 80 A O
2
Air F5 N
2
Cutting 130 A O
2
Air N
2
& H35 N
2
H35 & Air N
2
& Air
Cutting 200 A O
2
Air N
2
& H35 N
2
N
2
& H35 N
2
Cutting 260 A O
2
Air N
2
& H35 N
2
& Air N
2
& H35 N
2
& Air
Specifications
System gas requirements
* Oxygen, nitrogen, and air are required for all systems. Nitrogen is used as a purge gas.
** This information can be found in the Handbook of Compressed Gases, 3rd edition, Compressed Gas Association,
Van Nostrand Reinhold.
*** ISO standard 8573-1 Class 1.2.2 requirements are:
• Particulates – no more than 100 particles per cubic meter of air at a Size of 0.1 to 0.5 microns in the largest
dimension and 1 particle per cubic meter of air at a Size of 0.5 to 5.0 microns in the largest
dimension.
• Water – there can not be more humidity in the air than in air at –40° C (–40° F).
• Oil – the concentration of oil can be no more than 0.1 mg per cubic meter of air.
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