Sound Measurement
All sound data quoted has been measured in the third-octave band, limited values using a Real Time
Analyser calibrated sound intensity meter in accordance with BS ISO9614 (Part 1) : 2009.
1. 1 Sound Power Levels calculated from measured sound intensity according to BS EN ISO9614 Part 1: 2009.
2. dB(A) is the overall sound level, measured on the A scale.
3. Sound Pressure Levels calculated from sound power using the semi-hemispherical method according to BS EN
ISO1120 : 2009. If the equipment is placed adjacent to a reective wall, values may vary to those stated in our
performance data section, typically you can add 3dB(A) for each side added.
4. The below data is based on unit typical running conditions.
Sound Measurement
Nominal Operation (dBA)
Free Cooling DX
ET05D-HX1F*-*
Power 56 96
Pressure @ 1m 51 91
Pressure @ 3m 50 90
Pressure @ 10m 37 77
ET08D-HX1F*-*
Power 71 91
Pressure @ 1m 66 86
Pressure @ 3m 65 85
Pressure @ 10m 52 72
ET12D-HX1F*-*
Power 77 92
Pressure @ 1m 72 87
Pressure @ 3m 71 86
Pressure @ 10m 58 73
ET12D-HX2F*-*
Power 77 92
Pressure @ 1m 72 87
Pressure @ 3m 71 86
Pressure @ 10m 58 73
ET15D-HX1F*-*
Power 77 92
Pressure @ 1m 72 87
Pressure @ 3m 71 86
Pressure @ 10m 58 72
ET15D-HX2F*-*
Power 77 92
Pressure @ 1m 72 87
Pressure @ 3m 71 86
Pressure @ 10m 58 73
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