13
code HG0141.00GB ed.A-2008
LRP - RAPID PRO and LK - KONDENSA
LRP and LK WARM AIR HEATER
44,2
47,0
57,4
53,8
54,5
52,8
46,1
61,4
40
45
50
55
60
65
125Hz
250Hz
500Hz
1000Hz 2000Hz 4000Hz 8000Hz
LwA
Frequency [Hz in octave bands]
LRP018
Sound Pressure Lw [dB(A)]
53,1
58,2
61,4
61,4
60,0
53,4
42,7
66,9
40
45
50
55
60
65
70
75
125Hz
250Hz
500Hz
1000Hz 2000Hz 4000Hz 8000Hz
LwA
Sound Pressure Lw [dB(A)]
Frequency [Hz in octave bands]
LRP035
64,7
65,2
68,2
69,6
70,1
66,2
55,4
75,7
50
55
60
65
70
75
80
125Hz
250Hz
500Hz
1000Hz 2000Hz 4000Hz 8000Hz
LwA
Sound Pressure Lw [dB(A)]
Frequency [Hz in octave bands]
LRP045 - LRP055 - LK034 - LK045
62,5
69,2
71,9
72,8
73,3
69,9
59,6
78,8
50
55
60
65
70
75
80
85
125Hz
250Hz
500Hz
1000Hz 2000Hz 4000Hz 8000Hz
LwA
Sound Pressure Lw [dB(A)]
Frequency [Hz in octave bands]
LRP102 - LK080
59,7
69,8
71,4
72,3
72,7
68,5
59,4
78,3
50
55
60
65
70
75
80
125Hz
250Hz
500Hz
1000Hz 2000Hz 4000Hz 8000Hz
LwA
Sound Pressure Lw [dB(A)]
Frequency [Hz in octave bands]
LRP075 - LK065
62,7
72,8
74,4
75,3
75,7
71,5
62,4
81,3
50
55
60
65
70
75
80
85
125Hz
250Hz
500Hz
1000Hz 2000Hz 4000Hz 8000Hz
LwA
Sound Pressure Lw [dB(A)]
Frequency [Hz in octave bands]
LK105
58,7
62,2
61,9
63,3
65,1
65,2
59,6
71,3
50
55
60
65
70
75
125Hz
250Hz
500Hz
1000Hz 2000Hz 4000Hz 8000Hz
LwA
Sound Pressure Lw [dB(A)]
Frequency [Hz in octave bands]
LRP028 - LK020
3.4. Noise
Sound power
The sound power of a source (energy emitted per unit time) is a
characteristic of the same source and does not depend on the
environment in which the sound is emitted: this measurement
allows comparing the noise of different machines.
The sound power of the LK and LRP warm air heaters has been
measured in a reverberation room according to the following
standard:
ISO 3741 Acustica - Determinazione dei livelli di potenza
sonora e dei livelli di energia sonora delle sorgenti di rumore
mediante misurazione della pressione sonora - Metodi di
laboratorio in camere riverberanti
ISO 3741 Acoustics - Determination of sound power levels and
sound energy levels of noise sources using sound pressure -
Precision methods for reverberation test rooms
APEN GROUP has chosen to use one-speed fans favouring the
air flow rate to increase the system output, decrease the stratifi
-
cation in the room and thus the time required to heat the room.
