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Technical
Documentation

Weatherproof Microphone Unit Type 4184-A
for Hand-held Analyzer
Types 2250, 2250-L and 2270

Supplement to Instruction Manual BE 1712

HEADQUARTERS: Brüel & Kjær Sound & Vibration Measurement A/S · DK-2850 Nærum · Denmark
Telephone: +45 7741 2000 · Fax: +45 4580 1405 · www.bksv.com · [email protected]

Local representatives and service organisations worldwide

Ë

BE-

18

43-

--,

Î

English BE 1843 – 12

Содержание 4184-A

Страница 1: ...2250 2250 L and 2270 Supplement to Instruction Manual BE 1712 HEADQUARTERS Br el Kj r Sound Vibration Measurement A S DK 2850 N rum Denmark Telephone 45 7741 2000 Fax 45 4580 1405 www bksv com info b...

Страница 2: ......

Страница 3: ...of Microphone Unit Type 4184 A for Hand held Analyzer Types 2250 2250 L and 2270 Type 2250 from Hardware Version 1 1 Type 2250 L from Hardware Version 2 0 Type 2270 from Hardware Version 3 0 Supplemen...

Страница 4: ...sence of flammable liquids or gases Warnings Switch off all power to equipment before connecting or disconnecting their digital interface Failure to do so could damage the equipment Whenever it is lik...

Страница 5: ...ations 7 4 1 Specifications 7 4 4 Reference Conditions for Acoustic Calibration 7 4 5 Microphone 7 4 7 Directional Responses 10 4 8 Self generated Noise 13 4 9 Measuring Ranges 17 APPENDIX A Tables 23...

Страница 6: ......

Страница 7: ...s are configured with Weatherproof Microphone Unit Type 4184 A The other hardware components can be found in Instruction Manual BE 1712 section 1 2 4 NOTE Only one Weatherproof Microphone Unit Type 41...

Страница 8: ...gether with Outdoor Microphone Kit UA 1404 Table 1 1 Additional hardware components needed for conformance testing of the analyzers configured with Type 4184 A Quantity Br el Kj r Type Part Number Des...

Страница 9: ...phone can also be mounted on a tripod with Tripod Adaptor UA 1112 The mounting ring of the microphone unit is screwed onto the tripod adaptor The cable must be fed through the pipe or the hole in the...

Страница 10: ...y for the electrical tests during conformance testing can be found in section 3 5 While performing the calibration procedures the analyzer is automatically checked for its ability to perform the measu...

Страница 11: ...nt accuracy For the purpose of periodic testing it is recommended that you use the Br el Kj r Multifunction Acoustic Calibrator Type 4226 for acoustic frequency response tests For instructions on how...

Страница 12: ...minal sensitivity is the microphone s Open Circuit Sensitivity 10 9 mV Pa attenuated by the Microphone Preamplifier ZE 0773 s nominal attenuation 0 20 dB which equals 10 66 mV Pa Do not press the Star...

Страница 13: ...Microphone Preamplifier ZE 0773 Type Weatherproof Microphone Unit Nominal Open Circuit Sensitivity 10 9 mV Pa corresponding to 39 25 dB re 1 V Pa 1 5 dB Cartridge Capacitance 18 pF at 250 Hz Nominal...

Страница 14: ...section 3 5 differs from the electrical responses because it also includes Microphone Preamplifier ZE 0773 4 6 5 Free field Frequency Responses The free field frequency responses for plane progressive...

Страница 15: ...Microphone Preamplifier connected to a microphone extension cable Corresponds to the Acoustical Response column in Table A 4b Fig 4 7 Weatherproof Microphone Unit Type 4184 A cannot be mounted direct...

Страница 16: ...he reference direction of incidence as the axis Because the angle interval defines a three dimensional geometric shape there is only one set of graphs with sensitivity variations also where the direct...

Страница 17: ...ract 90 from the angles in the plots to get the sound incidence angle 0 30 60 90 120 150 180 210 240 270 300 330 25 20 15 10 5 0 5 dB d 0 30 60 90 120 150 180 210 240 270 300 330 a 630 Hz b 1600 Hz c...

Страница 18: ...s for Weatherproof Microphone Unit Type 4184 A with the Microphone Preamplifier connected to a microphone extension cable at sound incidence angles within from the reference direction Corresponds to T...

Страница 19: ...A cannot be mounted directly on the analyzer Fig 4 21 Weatherproof Microphone Unit Type 4184 A cannot be mounted directly on the analyzer Fig 4 22 Weatherproof Microphone Unit Type 4184 A is not speci...

Страница 20: ...7 23 7 Electrical 47 9 46 3 46 3 51 1 51 9 Total 47 9 46 3 46 3 51 1 51 9 Low Range Microphone 21 1 19 7 19 7 23 7 23 7 Electrical 29 0 27 6 28 1 33 3 44 3 Total 29 7 28 3 28 7 33 8 44 3 Table 4 2 Ty...

Страница 21: ...noise 1 1 octave band Single range Fig 4 25 Typical self generated noise 1 1 octave band High Range 110403 Microphone Electrical Total 10 dB 5 dB 0 dB 5 dB 10 dB 15 dB 20 dB 25 dB 30 dB 8 16 31 5 63...

Страница 22: ...ave band Single range 110405 Microphone Electrical Total 10 dB 5 dB 0 dB 5 dB 10 dB 15 dB 20 dB 25 dB 30 dB 8 16 31 5 63 125 250 500 1 k 2 k 4 k 8 k 16 k 110406 Microphone Electrical Total 10 dB 5 dB...

Страница 23: ...Limit can due to tolerances in the analyzer be up to 1 5 dB higher than the worst case limit but tolerances specified in the International Standards are maintained as long as no Overload is indicated...

Страница 24: ...el range which can be measured at 1 kHz within the most conservative tolerance limits specified in the International Standards IEC 61672 1 IEC 60651 and IEC 60804 NOTE For Sound Exposure Levels the st...

Страница 25: ...g table NOTE For Sound Exposure Levels the stated ranges are valid if 10 lg t is added to the limits t being the averaging time interval indicated as Elapsed Time expressed in seconds Table 4 5 Indica...

Страница 26: ...dB Single range A weighting 109 8 150 3 151 5 149 4 146 2 40 2 B weighting 132 2 150 3 149 8 147 6 144 4 38 8 C weighting 146 3 150 3 149 7 147 5 144 3 39 3 Z weighting 149 3 150 3 150 5 150 5 150 5...

Страница 27: ...r Limit of the Linear Operating Range on the least sensitive level range and the Lower Limit of the Linear Operating Range on the most sensitive level range 4 12 4 Vibration Vibration Sensitivity 20 1...

Страница 28: ...agnetic field The self generated noise is stated in section 4 8 Table 4 15 Magnetic Fields Configuration Most Sensitive Direction Rise in Self generated Noise A weighted dB B weighted dB C weighted dB...

Страница 29: ...esponse Hz Hz dB dB dB dB 63 63 0957 0 48 0 29 0 19 0 16 80 79 4328 0 21 0 27 0 06 0 16 100 100 0 24 0 25 0 01 0 16 125 125 893 0 31 0 21 0 10 0 16 160 158 489 0 08 0 16 0 08 0 16 200 199 526 0 07 0 0...

Страница 30: ...81 0 40 0 38 12500 12589 3 0 27 0 82 0 55 0 38 13200 13335 2 0 84 0 82 0 01 0 40 14000 14125 4 1 27 0 83 0 43 0 41 15000 14962 4 1 80 0 84 0 96 0 46 16000 15848 9 2 09 0 85 1 24 0 48 17000 16788 0 2...

Страница 31: ...0 08 0 24 4750 4731 51 3 06 2 89 0 17 0 24 5000 5011 87 3 23 3 06 0 17 0 25 5300 5308 84 3 19 3 19 0 00 0 29 5600 5623 41 3 46 3 30 0 16 0 29 6000 5956 62 3 67 3 38 0 29 0 30 6300 6309 57 3 44 3 44 0...

Страница 32: ...0 02 0 11 800 794 328 0 49 0 56 0 07 0 11 1000 1000 0 50 0 65 0 14 0 11 1060 1059 25 0 51 0 67 0 16 0 13 1120 1122 02 0 54 0 69 0 15 0 13 1180 1188 50 0 60 0 71 0 12 0 13 1250 1258 93 0 69 0 74 0 05 0...

Страница 33: ...frequency response in the reference direction for diffuse field calibrated instruments according to IEC 60651 and IEC 60804 Measured with plane progressive sinusoidal sound waves incident from the ref...

Страница 34: ...10000 2 20 0 82 10600 10592 5 2 42 0 68 11200 11220 2 2 57 0 64 11800 11885 0 2 60 0 63 12500 12589 3 2 74 0 59 13200 13335 2 2 19 0 68 14000 14125 4 1 76 0 91 15000 14962 4 1 23 1 49 16000 15848 9 0...

Страница 35: ...ted directly on the analyzer Table A 23 Weatherproof Microphone Unit Type 4184 A cannot be mounted directly on the analyzer Table A 24 Weatherproof Microphone Unit Type 4184 A cannot be mounted direct...

Страница 36: ...29 0 22 0 02 0 12 0 28 0 53 0 64 0 82 155 0 25 0 24 0 17 0 20 0 30 0 34 0 14 0 24 0 29 0 30 0 18 0 33 160 0 18 0 16 0 13 0 17 0 25 0 36 0 24 0 44 0 56 0 64 0 41 0 35 165 0 20 0 20 0 12 0 10 0 13 0 24...

Страница 37: ...2 79 3 16 155 0 86 1 26 1 29 1 04 0 78 1 07 2 19 2 34 2 02 2 20 2 23 2 28 160 0 49 0 54 0 43 0 59 1 16 1 41 1 23 1 41 1 20 1 17 1 63 2 25 165 0 99 1 23 1 00 0 63 0 42 0 20 0 25 0 75 0 94 1 27 1 75 1 8...

Страница 38: ...83 2 15 150 2 70 2 99 3 09 3 04 3 38 3 29 3 24 3 09 4 13 3 64 3 19 155 2 34 3 07 2 96 2 86 3 19 3 28 3 07 3 14 3 74 3 18 2 77 160 2 18 2 88 3 06 2 39 2 48 2 65 2 94 3 63 3 55 2 91 2 47 165 1 97 2 46...

Страница 39: ...z 0 25 0 71 1 11 3150 Hz 3162 28 Hz 0 28 0 64 1 22 3550 Hz 3548 13 Hz 0 35 1 00 1 57 4000 Hz 3981 07 Hz 0 64 1 59 2 11 4500 Hz 4466 84 Hz 0 84 2 04 2 41 5000 Hz 5011 87 Hz 0 75 2 13 2 66 5600 Hz 5623...

Страница 40: ...8 2 98 2 98 10000 Hz 10000 Hz 0 91 3 32 3 32 10600 Hz 10592 5 Hz 1 08 3 64 3 64 11200 Hz 11220 2 Hz 0 82 3 31 3 31 11800 Hz 11885 0 Hz 0 77 3 93 3 93 12500 Hz 12589 2 Hz 0 84 3 88 3 88 13200 Hz 13335...

Страница 41: ...f the microphone the inter sample variability cannot be separated from the adjustment data The uncertainty is allowed for in the adjustment of Weatherproof Microphone Unit Type 4184 A NOTE that the da...

Страница 42: ...Weatherproof Microphone Unit Type 4184 A Supplement to Instruction Manual BE 1712 36...

Страница 43: ...228 onto Type 4184 A 1 Unscrew the windscreen and windscreen holder Fig D 1 Left 2 Screw on Sound Calibrator Adaptor UA 1072 protection tube without protection cap Fig D 1 Right 3 Insert the sound cal...

Страница 44: ...should only be performed in a clean environment Avoid excessive torque when screwing the tip on to or off of the microphone Approximately 2 5 cm below the probe termination there are venting holes The...

Страница 45: ...be tip passes through the adaptor and contacts the stop at the base of the coupler NOTE Do not use excessive force It is important that the probe is properly seated against the stop at the base It sho...

Страница 46: ...ubstitute for Microphone Cartrigte WA 0302 1 Unscrew the base of the Type 4184 A microphone housing using Pin Wrench QA 0178 Fig D 5 Fig D 5 Base of Type 4184 A and pin wrench Unscrew counter clockwis...

Страница 47: ...A 0302 C dummy holder DB 4237 and electronics assembly Right Optional UNF to BNC Adaptor UA 0245 5 Place assembly onto the assembly holder UA 1743 Fig D 9 NOTE The base of the microphone electronics a...

Страница 48: ...Weatherproof Microphone Unit Type 4184 A Supplement to Instruction Manual BE 1712 42...

Страница 49: ...easurement Range 21 Measuring at Low Static Pressure 4 Measuring Ranges 17 Microphone 7 Mounting and Placing 3 Microphone Reference Point 7 Mounting and Placing the Microphone 3 Mounting for Acoustica...

Страница 50: ...Weatherproof Microphone Unit Type 4184 A Supplement to Instruction Manual BE 1712 44...

Страница 51: ......

Страница 52: ...2250 2250 L and 2270 Supplement to Instruction Manual BE 1712 HEADQUARTERS Br el Kj r Sound Vibration Measurement A S DK 2850 N rum Denmark Telephone 45 7741 2000 Fax 45 4580 1405 www bksv com info b...

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