Test Report: ISO 3744:2010(E), Acoustics – Determination of sound power levels and sound energy levels of noise source using sound pressure – Engineering methods for an essentially free field over a reflecting plane. Performed by:
John Gagliardi Technical Director Technicon Acoustics
[email protected]
Signature: Laboratory Address:
8501 IBM Drive, Charlotte, NC 28262
Date of Test: Time of Test: Test Performed for:
June 25, 2014 1200 Eastern Standard Time Technicon Acoustics Tyler Keeley Phone: 704-788-1131 E-mail:
[email protected] Address: 4412 Republic Court Concord, NC 28027
Report ID:
3744-062514-1
The test results provided by this report are representative of the sample tested only.
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This report does not claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the Federal Government.
Table 1. ISO 3744 Section 10.2: Noise Source Under Test Sec 10.2 Noise Source Under Test Sec 10.2.a Noise Source Description Class/Group: Oxygen Concentrator Manufacturer: Respironics Model: 1020000 Part No.: NA Serial No.: 450449 Model Year: 2011 Dimensions l1, L (m): l2, W (m): l3, H (m): Volume (m^3): Sec 10.2.b A)
Sec 10.2.c A) Sec 10.2.c
0.24 0.38 0.58 0.05 Auxiliary Equipment Treatment Oxygen exit ported to outside with 6.1 meters of 6.35mm diameter tubing Mode of Operation 5 liters per minute (LPM) of Oxygen Measurement Time Length (s) 60
Sec 6.4 A) B)
Installation and Mounting Conditions Set on floor of hemi-anechoic room Normal orientation
Sec 10.2.e
Sec 6.3 L (m): W (m): H (m):
Location of noise source WRT to corner nearest door 4.42 m 2.75 m 0 m, resting on floor
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Sec 10.2.d
Table 2. ISO 3744 Section 10.3: Test Environment Sec 10.3 Test Environment Sec 10.3.a.1
Indoors Testing Hemi-Anechoic Room L (m): W (m): H (m):
Walls: Ceiling: Floors:
Description of test room Dimensions 8.84 5.5 3.05 Surface Treatment Poured concrete, with fiberglass wedges, 0.91 m deep Poured concrete, with fiberglass wedges, 0.91 m deep Painted poured concrete
Sec 10.3.a.2
Outdoor Testing Reflecting Floor: Surrounding Terrain:
Description of outdoors Not Applicable Not Applicable
Sec 10.3.a.3
Walls underwhich noise source stands:
Not Applicable
Sec 10.3.b
Acoustic Qualification Annex A
Environmental Correction Factor "K2"
Test Air temp (C): Static Press (kPa):
Test Environment 23 100
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Sec 10.3.c
determined by procedure A.2.1
Figure 1. Sketch showing noise source location
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Figure 2. Photo of test setup
Serial No. 5117 8316 8786 LW138939
Manufacturer Larson Davis Larson Davis Larson Davis PCB
Model 900B 900B 900B 378B02
Serial No. 3522 2480 3521 112266
Sound Analyzer
Manufacturer
Model
Serial No.
Sinus
Soundbook 6378
Sec 10.4.b
Manufacturer
Model
Serial No.
Bruel & Kjaer
4230
1472046
Location: Date:
Calibration of System Technicon Acoustics Lab Date of test
Location: Date: Method:
Calibration of Sound Calibrator: NovaStar July 17, 2013 ANSI
Location: Date: Method:
Calibration of RSS Riverbank November 27, 2013 ANSI S12.5, ISO 6926
Windscreen:
Report ID: 3744-062514-1
ACO Pacific WS-1 Diameter=76.2 mm, Pours per inch: 20
Calibration Date 6/02/2013 External Calibration Date 7/17/2013
5
Preamplifier 1 2 3 4
Calibrator
Sec 10.4.c
Model 2541 2541 2541 377B02
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Table 3. ISO 3744 Secton 10.4 Instrumentation Sec 10.4.a Microphones Manufacturer 1 Larson Davis 2 Larson Davis 3 Larson Davis 4 PCB
Table 4. ISO 3744 Section 10.5.a Reference Box and Measurement Surface Sec 10.5.a Dimenion Reference Box l1 (m): 0.24 l2 (m): 0.38 l3 (m): 0.58 Shape of Measurement Surface: Hemisphere Measure Radius r (m): 1.24 Table 5. ISO 3744, section 10.5.b Microphone Location, Refer to ISO 3744, Figure B.2. Measurement Radius r (m): Def 3.13 1.244 Test Object Length l1, L (m): 0.24 Width l2, W (m): 0.38 Height l3, H (m): 0.58 Surface Radius r (m): Measurement 1.244 Measurement Surface S (m2): Area of 9.724
Microphone Microphone 1 2 3 4 5 6 7 8 9
Reference y/r 0 -0.86 0.86 0.77 -0.77 0 0.57 0 -0.57 0
Surface z/r 0.15 0.15 0.15 0.45 0.45 0.45 0.75 0.75 0.75 1
X (m) -1.232 0.622 0.622 -0.560 -0.560 1.107 0.411 -0.821 0.411 0.000
Y (m) 0.000 -1.070 1.070 0.958 -0.958 0.000 0.709 0.000 -0.709 0.000
Z (m) 0.187 0.187 0.187 0.560 0.560 0.560 0.933 0.933 0.933 1.244
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Locations WRT x/r -0.99 0.50 0.50 -0.45 -0.45 0.89 0.33 -0.66 0.33 0
9
10
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Table 6. Section 10.5.c. Sound Pressure Level from Noise Source (dBL) Noise Source Frequency Mic Loc (Hz) 1 2 3 4 5 6 7 8 100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000 6300 8000 10000
6
7
8
9
10
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Table 7. Section 10.5.c. Background Noise Level (dBL) Background Noise Frequency Mic Loc (Hz) 1 2 3 4 5 100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000 6300 8000 10000
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Table 8. Section 10.5.d. Background Noise Correction K1 Background Noise Frequency Correction K1i (Hz) (dB) 100 0.0 125 0.0 160 0.0 200 0.0 250 0.0 315 0.0 400 0.0 500 0.0 630 0.0 800 0.0 1000 0.0 1250 0.0 1600 0.0 2000 0.0 2500 0.0 3150 0.0 4000 0.0 5000 0.0 6300 0.0 8000 0.0 10000 0.0
Table 9. Section 10.5.e. Environmental Noise Correction K2 Environmental Correction Factor "K2" determined by procedure A.2
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Environmental Noise Frequency Correction K2i (Hz) (dB) 100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000 6300 8000 10000
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Table 10. Section 10.5.f Surface time-averaged sound pressure level, LP Surface Time-Averaged Frequency SPL (Hz) (dB) 100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000 6300 8000 10000
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Table 12. Section 10.5.g. Sound Power Levels, 1/1 Octave Linear and A-wgt 1/1 Octave Frequency Lw Lwa (Hz) (dBL) (dBA) 125 250 500 1000 2000 4000 8000
12
Table 11. Section 10.5.g. Sound Power Levels, 1/3 Octave and Overall, Linear and A-wgt 1/3 Octave Frequency Lw Lwa (Hz) (dBL) (dBA) 100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000 6300 8000 10000 Overall
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Table 13. Section 10.5.h. Expanded Measurement Uncertainty “U” Frequency U (Hz) (dB) 100 6.1 125 6.1 160 6.1 200 4.1 250 4.1 315 4.1 400 3.2 500 3.2 630 3.2 800 3.2 1000 3.2 1250 3.2 1600 3.2 2000 3.2 2500 3.2 3150 3.2 4000 3.2 5000 3.2 6300 5.1 8000 5.1 10000 5.1 Overall A-wgt 3.2
Table 14.Section 10.5.i. Apparent Directivity, DIi 1
2
DIi 3
Apparent 4
Directivity 5
Index 6
(dB) 7
8
9
10
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Frequency (Hz) 100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000 6300 8000 10000 Overall: Linear Overall: A-wgt
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Table 15. Section 10.5.J. Apparent Surface Sound Pressure Level Non-Uniformity Index, VId Apparent Surface SPL Non-uniformity Index Frequency VId (dB) (Hz) (dB) 100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000 6300 8000 10000 Overall: Linear Overall: A-wgt
