Hypertherm HT4400 HySpeed Plasma Arc Cutting System - Manual (Page 181)

APPENDIX D – NOISE LEVELS
d-2 HT4400 Instruction Manual
3
39"
(1 m)
Noise Levels
Noise level measurements listed below for the HT4400 plasma system were taken from a distance of 39" (1 m), at
a height of 46" (1.2 m) from the torch. Sound levels may vary due to room acoustics, room size, material being cut,
cutting amps being used and other factors.
Torch Position Amps/Plasma Maximum dB
100 A/O2 111
2.5” (63.5 mm) Above Water
200 A/O2 120
300 A/O2 121
400 A/O2 124
3.0” (76 mm) Under Water 400 A/O2 106
2.5” (63.5 mm) Above Water
200 A/N2 124
400 A/N2 121