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聯系我們GRAS麥克風47AX技術資料GRAS北京授權代理
“1/2”47ax中共齊平安裝的麥克風設置
頻率范圍：3.15赫茲到20千赫
動態范圍：22分貝到150分貝（A）
靈敏度：12.5毫伏/ PA
“1/2”47ax中共齊平安裝的麥克風設置
科技
規格
尺寸
訂購信息
科技
典型的應用和使用
嵌入式安裝在密閉空間
嵌入式安裝在粘土模型
地面陣列測量
一般的噪聲測量
設計
一個高度（隔膜）只有8毫米，47ax是適合嵌入式安裝在地面陣列的應用程序和其他應用程序的尺寸約束板。
麥克風是一個從22分貝到146分貝，從3.15赫茲到20千赫的頻率范圍動態范圍預極化壓力麥克風。內置的前置放大器是一個低噪聲恒流電源（CCP）型，具有自動識別內置TEDS傳感器電路。設置有一個集成的1.5米電纜連接器BNC電纜點加一個適配器。
嵌入式安裝是理想，孔可以在結構，如粘土模型，以適應前通風47ax。后排出的版本是可用的，這47ax–S1。
它是包含在鵝肝67ax地面陣列設置，其中有一個直徑400毫米的安裝板。
的47ax是基于IEC 61094標準的測量麥克風。
校準
出廠時，所有的節的麥克風已在受控的實驗室環境中使用校準設備校準。根據不同的使用環境、測量和內部質量控制程序，我們建議麥克風校準至少每年一次。
我們提供了兩種類型的校準作為一個可選的售后服務：鵝肝醬可溯源校準和校準。
GRAS校準是校準由專業人員進行控制的條件下，按照既定的程序和標準。這是所有鵝肝麥克風進行作為我們質量保證的一個組成部分的嚴格校準相同。
GRAS的校準是由GRAS進行認可的校準實驗室，已與ISO 17025一致認可的丹麥DANAK，認可基金。
如果你想要一個新的麥克風設置提供一個認可的校準在默認出廠校準代替，在訂貨時此。
學習更多GRAS/校準。
質量和保修
GRAS麥克風集是從我們的證明標準的投資組合的成分，都是的材料和零部件的制造，品牌的選擇和處理，以確保終身的穩定性和魯棒性。
所有的零件制造和組裝在丹麥工廠的技能和專門的運營商在一個驗證潔凈室環境。麥克風的膜片，身體和*的保護網是由不銹鋼使麥克風設置抗物理損傷以及激進的空氣或氣體引起的腐蝕。
這，連同執行鍍金麥克風端子保證高度可靠的連接。得益于高質量，我們對有缺陷的材料和工藝質量保證5年。
服務
如果你錯誤地損害GRAS麥克風我們將在大多數情況下，可以交換在一個非常合理的成本和較短的周轉時間的隔膜。這不僅保護您的投資，也能滿足你的質量保證部門，因為你不必擔心新的序列號等。
規格
GRAS am0069擋風玻璃1/2“麥克風
外直徑：90毫米
孔直徑：12毫米
材料：泡沫
說明
的am0069包含5個球形玻璃專門設計用于1/2“聲壓測量的自由場條件下的優化設置麥克風的情況下，例如風從哪里來更多的和不可預知的方向。擋風玻璃是把它盡可能的在話筒和前置放大器的安裝。
設計
當麥克風被放置在一個層流、湍流的產生導致不必要的壓力變化對隔膜反過來。通過使用擋風玻璃這些壓力的變化移動遠離隔膜盡可能。
理論上支持“越大越好”的設計，但在實踐中，這是減少空氣速度之間的一種折衷，引起噪聲的實際尺寸和自。自噪聲抖動噪聲的產生，當雨開始圍繞麥克風移動。
GRAS的擋風玻璃都是尺寸優化和特殊，開孔泡沫結構和每英寸的孔數二（PPI），是為了抵御潮濕的環境，同時不影響聲壓測量結果明顯。
頻率依賴性的衰減是如果雨淋濕的預期。因此，擋風玻璃不打算作為麥克風防雨。
選擇
如果長時間戶外監測是非常必要的，我們建議你尋找鵝肝半*和*性戶外麥克風解決方案：
GRAS 41ac-2雷莫戶外麥克風與社區和機場噪聲遠程
GRAS 41ac-3中國戶外麥克風社區和機場噪聲
GRAS 41ac-4雷莫戶外麥克風社區和機場噪聲（0 V型。）
如果減少湍流不足夠你的類型的測量，我們建議的強度測量技術，有效地抑制背景噪聲。鵝肝具有廣泛的2D，3D和寬的頻率強度探針支持中共和勒墨輸入模塊，看到鵝肝強度探討。
如果你需要在一個明確的層流氣流使聲壓的測量，例如在一個風洞，我們建議你尋找鵝肝nosecones?；蛘邔ふ椅覀兊谋砻纨R平安裝的麥克風麥克風，我們的新概念或湍流的屏幕。
Design
When a microphone is placed in a laminar flow, turbulence is created which in turn results in unwanted pressure variations on the diaphragm. By using a windscreen these pressure variations are moved as far away from the diaphragm as possible.
Theoretically this supports a “the-bigger-the-better design”, but in practice it is a compromise between air speed reduction, practical size and self-induced noise. Self-induced noise is wobble-noise which is generated, when the windscreen starts moving around the microphone.
The GRAS windscreens are all size optimized and their special, open-cell foam structure and number of pores per inch2(ppi), are designed to resist a humid environment and at the same time not influence the sound pressure measurement result significantly.
Frequency dependent attenuation is to be expected if the windscreen gets wet. Therefore windscreens are not intended as rain protection of the microphone.
Alternatives
If longer duration of outdoor monitoring is required, we suggest that you look for the GRAS semi-permanent and permanent outdoor microphone solutions:
GRAS 41AC-2 LEMO Outdoor Microphone with RemoteCheck for Community and Airport Noise
GRAS 41AC-3 CCP Outdoor Microphone for Community & Airport Noise
GRAS 41AC-4 LEMO Outdoor Microphone for Community and Airport Noise (0 V pol.)
If the turbulence reduction is not sufficient for your type of measurement, we suggest the intensity measurement technique that suppresses background noise effectively. GRAS has a wide range of 2D, 3D and wide-frequency intensity probes supporting both CCP and LEMO input modules, see GRAS Intensity Probes .
If you need to make sound pressure measurements in a well-defined laminar airflow, e.g. in a wind-tunnel, we suggest that you look for GRAS nosecones. Alternatively look for our surface microphones, our new flush-mounted microphone concept or our turbulence screen.
Quality and Warranty
On consumables like batteries, cables and windscreens we offer a 6 month warranty.
質量和保修
對消耗品如電池、電纜和擋風玻璃我們提供6個月保修。
GRAS 67TS Turbulence Screen Kit
GRAS AA0001 20 m LEMO 6-pin - LEMO 6-pin Cable for outdoor microphone
GRAS AA0002 10 m LEMO 6-pin - LEMO 6-pin Cable for outdoor microphone
GRAS AA0003 3 m LEMO 6-pin - LEMO 6-pin Cable for outdoor microphone
GRAS AA0004 50 m LEMO 6-pin - LEMO 6-pin Cable for outdoor microphone
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GRAS AA0015 100 m LEMO 6-pin - LEMO 6-pin Cable for outdoor microphone
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GRAS AA0016 200 m LEMO 6-pin - LEMO 6-pin Cable for outdoor microphone
GRAS AA0086-CL Customized Length LEMO 6-pin - LEMO 6-pin Cable for outdoor microphone
GRAS AB0002 Mains/line power supply
GRAS AB0003 Mains/line power supply
GRAS AB0006 Mains/line power supply
GRAS AC0001 Calibration Control Box for 41AM/CN
GRAS AE0003 Plug
GRAS AE1002 LEMO 7-pin panel connector
GRAS AB0005 Mains/line power supply
GRAS AB0006 Mains/line power supply
GRAS AC0001 Calibration Control Box for 41AM/CN
GRAS AE0003 Plug
GRAS AF0008 Adapter for 1/4" preamplifier and 1/2" microphone
GRAS AG0001 Adapter for 7-pin LEMO to B&K
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GRAS AG0002 CCP Input Adapter
GRAS AG0003 Adapter for CCP preamplifier to XLR
GRAS AF0008 Adapter for 1/4" preamplifier and 1/2" microphone
GRAS AL0012 1/2" Microphone Holder, Stainless Steel
GRAS AM0029 Pole adapter
GRAS AL0029 1/4" Microphone Holder, POM
GRAS AM0037 Transport protection cap
GRAS AM0038 Multi spanner/wrench
GRAS AM0052 Complete Windscreen for 41AM/CN
GRAS AM0033 Tripod adapter
GRAS AM0071 Windscreen for 1/4" Microphones
GRAS AM0069 Windscreen for 1/2" Microphones
GRAS AM0009 Windscreen for 41AM/CN
GRAS AM0363 Windscreen for 1" Microphones
GRAS AM0089 Lownoise Windscreen for 41AM/CN
GRAS AM0376 Windscreen for Intensity Probes
GRAS AM0364 Windscreen for Array Microphones
GRAS AM0378 Windscreen for 41AC
GRAS GR0010 Adapter for 1/4" preamplifier and 1/2" microphone
GRAS AM0071 Windscreen for 1/4" Microphones
GRAS AL0013 1/4" Microphone Holder, Stainless Steel
GRAS AL0008 1/2" Microphone Holder, POM
GRAS AL0028 7 mm Microphone Holder, POM
GRAS AL0003 1/4" & 1/2" Adjustable Microphone Holder, POM
GRAS KB0060 KEMAR Pinna for Types 45BA, 45BM, 43AG, 45BB and 45BC
GRAS AL0007 Clips for 1/4” intensity microphones
GRAS AL0004 Small light weight microphone tripod
GRAS GR0707 Spacer for Array
GRAS KB0065 KEMAR Pinna for Types 45BA, 45BM, 43AG, 45BB and 45BC
GRAS KB0061 KEMAR Pinna for Types 45BA, 45BM, 43AG, 45BB and 45BC
GRAS AK0096 Rack Kit
GRAS AL0011 Calibration Stand for IEC 60318-1 Ear Simulator
GRAS KB0069 Small Left KEMAR Pinna for Sound Quality, 55 Shore OO
GRAS AG0001 Adapter for 7-pin LEMO to B&K
GRAS AG0003 Adapter for CCP preamplifier to XLR
GRAS AG0002 CCP Input Adapter
GRAS AK0040 Standard 19” Rack-mounting System
GRAS AL0005 Swivel head
GRAS AL0006 Tripod
GRAS GR0625 End piece
GRAS KB0070 KEMAR Pinna for GRAS 45CA
GRAS KB0072 KEMAR Pinna for GRAS 45CA
GRAS GR0630 Connecting piece
GRAS KB1066 KEMAR Pinna for Types 45BA, 45BM and 43AG
GRAS KB1070 KEMAR Pinna for GRAS 45CA
GRAS KB1065 KEMAR Pinna for Types 45BA, 45BM and 43AG
GRAS KB1068 Small Right KEMAR Pinna for Sound Quality, 35 Shore OO
GRAS KB1091 KEMAR Pinna for Types 45BA, 45BM and 43AG
GRAS KB1069 Small Left KEMAR Pinna for Sound Quality, 35 Shore OO
GRAS KB1071 KEMAR Pinna for GRAS 45CA
GRAS KB1060 KEMAR Pinna for Types 45BA, 45BM and 43AG
GRAS KB1061 KEMAR Pinna for Types 45BA, 45BM and 43AG
GRAS KB1090 KEMAR Pinna for Types 45BA, 45BM and 43AG
GRAS OP0023 Kit for Sensitivity Calibration of Flush-mount Microphone Sets
GRAS KB0111 Ear-mould simulator
GRAS KB5001 Left Anthropometric Pinna 35 Shore OO
GRAS KB5011 Left Anthropometric Pinna for 45CA, 35 Shore OO
GRAS OP0025 Kit for Sensitivity Calibration of 1/4" Surface Microphones
GRAS PA0018 Cable Drum
GRAS RA0003 Adapter for 1/2" microphone and 1/4" preamplifier
GRAS RA0001 Right-angled (90o) Adapter for 1/2" microphone and 1/4" preamplifier
GRAS PR0002 Array Module
GRAS PR0001 Array Module with Central Cable Connection
GRAS PR0001-2 Array Module with Angled Central Cable Connection
GRAS RA0007 Straight adapter for 1/4" preamplifiers
GRAS RA0006 Right-angled (90o) Adapter for 1/4" Microphone and 1/4" Preamplifier
GRAS KB5000 Right Anthropometric Pinna 35 Shore OO
GRAS RA0009 Adapter for Pistonphone calibration
GRAS KB5010 Right Anthropometric Pinna for 45CA, 35 Shore OO
GRAS RA0011 Gooseneck
GRAS KB0077 KEMAR Pinna for GRAS 45CB
GRAS KB0091 KEMAR Pinna for Types 45BA, 45BM and 43AG
GRAS KB0071 KEMAR Pinna for GRAS 45CA
GRAS KB0072 KEMAR Pinna for GRAS 45CA
GRAS KB0073 KEMAR Pinna for GRAS 45CA
GRAS KB0078 KEMAR Pinna for GRAS 45CB
GRAS KB0090 KEMAR Pinna for Types 45BA, 45BM and 43AG
GRAS RA0016 20 dB Attenuator for externally polarized 1/2" microphones
GRAS KB0110 Ear-mould simulator
GRAS RA0018 20 dB Attenuator for prepolarized 1/2" microphones
GRAS RA0019 Adapter for 1/4" microphone and 1/2" preamplifier
GRAS RA0023 Coupler for 1" microphones
GRAS RA0060 Calibration Coupler for 1/2” Nosecone
GRAS RA0062-S1 50 pF Preamplifier-input Adapter for 1/2" preamplifiers
GRAS RA0048 Pistonphone coupler
GRAS RA0049 Microphone adapter for pistonphones
GRAS RA0042 Coupler for two-port Calibration
GRAS RA0067 Transmitter Adapter for 1/2" microphones
GRAS RA0072 Octopus coupler
GRAS RA0073 Adapter for 1" microphone and 1/2" preamplifier
GRAS RA0080 6pF Preamplifier-input adapter for 1/4" microphones
GRAS RA0077 NBS 9-A Coupler adapter for 1/2” microphone
GRAS RA0082 Adapter for 1/8" microphone and 1/4" preamplifier (long version)
GRAS RA0081 Special tool for gripping 1/2” microphones
GRAS RA0070 Test Base for Ear Simulators, Basic
GRAS RA0083 BNC to 7-pin LEMO Adapter
GRAS RA0087 Special key
GRAS RA0085 Insulated coupling for artificial ear
GRAS RA0063 Adapter for 1/8" microphone and 1/4" preamplifier
GRAS RA0092 Rain-protection Cap for array microphones
GRAS RA0093-S1 1/2" Adjustable Microphone Holder, Stainless Steel
GRAS RA0095 Dehumidifier for 1” microphones
GRAS RA0094 3-Click Holder for Array Module, Stainless Steel
GRAS RA0086 Transmitter Adapter for 1/4" microphones
GRAS RA0090 Pistonphone Coupler
GRAS RA0062 20 pF Preamplifier-input Adapter for 1/2" preamplifiers
GRAS RA0041 Adapter for Pistonphone calibration
GRAS RA0022 1/4" NoseconeGRAS RA0024 Coupler for two-port Calibration
GRAS RA0088 In Ear Adapter
GRAS RA0058 1/2'' to 1'' Microphone Adapter
GRAS RA0107 Spacers
GRAS RA0017 Adapter for 1" microphone and 1/2" preamplifier
GRAS RA0018 20 dB Attenuator for prepolarized 1/2" microphones
GRAS RA0020 1/2" Nosecone
GRAS RA0020-A 1/2" Nosecone, lightweight
GRAS RA0019 Adapter for 1/4" microphone and 1/2" preamplifier
GRAS RA0096 1/4" 5-Click Microphone Holder, Stainless Steel
GRAS RA0052 Test Jig
GRAS RA0114 Adapter for 1/4” button type hearing aids
GRAS RA0115 Moulding adapter for ITE hearing aids
GRAS RA0132 Dehumidifier for 1/2” microphones
GRAS RA0172 Pinna Holder Kit for GRAS 45CA
GRAS RA0143 Ear Simulator Holder Kit for KEMAR
GRAS RA0157 1/2" Calibration Adapter for KEMAR Pinna
GRAS RA0168 Digital Barometer
GRAS RA0185 Holder for Array microphone in PR0002 Array module
GRAS RA0127 Rain-protection cap for 1/4” microphones
GRAS RA0131 Rain-protection cap for 1/2” microphones
GRAS RA0125 Adapter for microdot input to a 1/2” preamplifier
GRAS RA0176 1/2" to 1" Adapter for RA0039
GRAS RA0173 1/8” Nosecone
GRAS RA0202 Pistonphone Calibration Adapter for 1/4" Surface Microphone Sets
GRAS RA0245 Holder for 1/4" microphone set in PR0002 Array module
GRAS RA0216 Field verification adapter for 67AX/AD
GRAS RA0501 Mounting Adapter for 1/2” Flush-mount Microphone Set
GRAS RA0251 KEMAR Retrofit kit for test of Binaural Hearing Aid
GRAS RA0190 Right-angled (90o) Adapter for 1/2" Microphone and 1/2" Preamplifier
GRAS RA0140 Dummy 1” microphone
GRAS RA0122 Random-incidence corrector
GRAS RA0302 Removal Tool for 1/2" and 1/4" Flush-mount Microphones
GRAS RA0311 KEMAR Retrofit Kit for Anthropometric Pinna
GRAS RA0118 Attenuator for 1/4" microphones
GRAS RA0114 Adapter for 1/4” button type hearing aids
GRAS RA0115 Moulding adapter for ITE hearing aids
GRAS RA0116 Adapter for 1/2" microphone
GRAS RA0117 Coupler adapter for 1/2” to 1/4” microphone
GRAS RA0119 Pistonphone Adapter
GRAS RA0196 Retrofit High-tension Spring Kit for RA0052
GRAS RA0503 Mounting Adapter for 1/8” Flush-mount Microphone Set
GRAS SK0017 Tripod thread insert
GRAS SK0057 Tripod conversion screw
GRAS 46BG-FV 1/4" CCP Pressure Front Vented Microphone Set, High Pressure
GRAS 46BL 1/4" CCP Pressure Standard Microphone Set, High Sensitivity
GRAS 46BD-FV 1/4" CCP Pressure Standard Microphone Set, Front Vented
GRAS 46BE 1/4" CCP Free-field Standard Microphone Set
GRAS 46DD-FV 1/8'' CCP Pressure Standard Microphone Set, Front Vented
GRAS 46BL-HT 1/4" CCP Pressure High Temperature Microphone Set, High Sensitivity
GRAS 46BG 1/4" CCP Pressure Standard Microphone Set, High Pressure
GRAS 46DE 1/8'' CCP Pressure Standard Microphone Set
GRAS 46BD-S1 1/4" CCP Pressure Standard Microphone Set with SMB connector
GRAS 46AR 1/2'' LEMO Random Incidence Standard Microphone Set
GRAS 46AC 1/2'' LEMO Free-field Standard Microphone Set, Wide Frequency
GRAS 46DP-1 1/8" LEMO Pressure Standard Microphone Set
GRAS 46AG 1/2'' LEMO Pressure Standard Microphone Set
GRAS 46BH-1 1/4" LEMO Pressure Standard Microphone Set, High pressure
GRAS 46DD 1/8'' CCP Pressure Standard Microphone Set
GRAS 46AZ 1/2'' CCP Free-field Standard Microphone Set, Low Frequency
GRAS 46AP 1/2" LEMO Pressure Standard Microphone Set, High Sensitivity
GRAS 46AO 1/2'' CCP Pressure Standard Microphone Set
GRAS 146AE 1/2'' CCP Free-field Rugged Microphone Set
GRAS 46AE 1/2'' CCP Free-field Standard Microphone Set
GRAS 46AD 1/2" CCP Pressure Standard Microphone Set, High Sensitivity
GRAS 46AF 1/2'' LEMO Free-field Standard Microphone Set
GRAS 46AM 1/2'' CCP Free-field Standard Microphone Set, Wide Frequency
GRAS 46BD 1/4" CCP Pressure Standard Microphone Set
GRAS 46AN 1/2'' LEMO Free-field Standard Microphone Set, Low Frequency
GRAS 46BP-1 1/4" LEMO Pressure Standard Microphone Set
GRAS 46BF-1 1/4" LEMO Free-field Standard Microphone Set
GRAS 40AM 1/2" Prepolarized Free-Field Microphone, Wide Frequency
GRAS 40AU-1 1/2" Ext. Polarized Reference Pressure Microphone
GRAS 40BD-FV 1/4" Prepolarized Pressure Microphone, Front Vented
GRAS 40BD 1/4" Prepolarized Pressure Microphone
GRAS 40BE 1/4" Prepolarized Free-Field Microphone
GRAS 40BH 1/4" Ext. Polarized Pressure Microphone, High Pressure
GRAS 40BE-FV 1/4" Prepolarized Free-Field Microphone, Front Vented
GRAS 40BF 1/4" Ext. Polarized Free-field Microphone
GRAS 40AP-FV 1/2" Ext. Polarized Pressure Microphone, High Sensitivity, Front Vented
GRAS 40BP-FV 1/4" Ext. Polarized Pressure Microphone, Front Vented
GRAS 40BP 1/4" Ext. Polarized Pressure Microphone
GRAS 40DD 1/8" Prepolarized Pressure Microphone
GRAS 40AZ 1/2" Prepolarized Free-field Microphone, Low Frequency
GRAS 40AR 1/2" Ext. Polarized Random Incidence Microphone
GRAS 40AQ 1/2" Prepolarized Random Incidence Microphone
GRAS 40AO-FV 1/2" Prepolarized Pressure Microphone, Front Vented
GRAS 40AG 1/2" Ext. Polarized Pressure Microphone
GRAS 40AO 1/2" Prepolarized Pressure Microphone
GRAS 40AC 1/2" Ext. Polarized Free-field Microphone, Wide Frequency
GRAS 40AD 1/2" Prepolarized Pressure Microphone, High Sensitivity
GRAS 40AE 1/2" Prepolarized Free-Field Microphone
GRAS 40AF 1/2" Ext. Polarized Free-field Microphone
GRAS 40AP 1/2" Ext. Polarized Pressure Microphone, High Sensitivity
GRAS 40AN 1/2" Ext. Polarized Free-field Microphone, Low Frequency
GRAS 40DP 1/8" Ext. Polarized Pressure Microphone
GRAS 40EN 1" Ext. Polarized Pressure Microphone
GRAS 40EU 1" Ext. Polarized Reference Pressure Microphone
GRAS 26AA 1/4" Preamplifier with Integrated Cable for Intensity Probes
GRAS 26CA-HT 1/2'' CCP High Temperature Preamplifier with BNC Connector
GRAS 26CI 1/2'' CCP Preamplifier with BNC Connector, Low Frequency
GRAS 26CC 1/4" CCP Standard Preamplifier with SMB Connector
GRAS 26CK 1/2” CCP Standard Preamplifier with Microdot Connector, Very Short
GRAS 26CF 1/2'' CCP Preamplifier with BNC Connector, Gain and Filters
GRAS 26CA 1/2'' CCP Standard Preamplifier with BNC Connector
GRAS 26CB-HT 1/4" CCP Standard Preamplifier with Microdot Connector
GRAS 26CB 1/4" CCP Standard Preamplifier with Microdot Connector
GRAS 26AS 1/4" Standard Preamplifier with 3 m Integrated Cable, Very Short
GRAS 26AM 1/2'' Standard Preamplifier with 3 m integrated cable
GRAS 26AL 1/4" SysCheck Preamplifier with 3 m integrated cable
GRAS 26AK-S1 1/2'' Preamplifier with Integrated Connector, Low Frequency
GRAS 26AB 1/4''-1/2'' Universal Preamplifier with Integrated Connector
GRAS 26AC-1 1/4" Standard Preamplifier with Integrated Miniconnector
GRAS 26AH 1/2'' SysCheck Preamplifier with 3 m integrated cable
GRAS 26AI 1/2'' Preamplifier with Integrated Connector, Low Frequency
GRAS 26AJ 1/2'' SysCheck Preamplifier with integrated connector
GRAS 26AK 1/2'' Standard Preamplifier with Integrated Connector
GRAS 26AR 1/4" Standard Preamplifier with Integrated Mini-connector
GRAS 26CS 1/4" CCP GRAS 43BA-2 1/4" 0.4cc CCP High Frequency Coupler Kit
Standard Preamplifier with Microdot Connector, Very Short
GRAS 26HG 1/4" Preamplifier with 3 m Integrated
GRAS 43BA-3 1/4" 0.4cc CCP High Frequency Coupler Kit, High Sensitivity
GRAS 43BB Low-noise Ear Simulator System
GRAS 43AI CCP Ear Simulator for Production Testing Based on ITU-T Rec. P57 Type 3.2 High-leak
GRAS 43AH CCP Ear Simulator for Production Testing Based on ITU-T Rec. P57 Type 3.2 Low-leak
GRAS 43AF-S1 1'' 6cc Coupler Kit According to IEC 60318-3 with 26AB Preamplifier
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GRAS 43AG Ear & Cheek Simulator
GRAS 43AF 1'' 6cc Coupler Kit According to IEC 60318-3
GRAS 43AA Ear Simulator Kit According to IEC 60318-1 & -2
GRAS 43AA-S2 CCP Ear Simulator Kit According to IEC 60318-1 & -2
GRAS 43AB 1/2'' 2cc Coupler Kit According to IEC 60318-5
GRAS 43AC Ear Simulator Kit According to IEC 60318-4
GRAS 43AC-S1 CCP Ear Simulator Kit According to IEC 60318-4
GRAS 43AD Ear Simulator Kit According to ITU-T Rec. P57 Type 1
GRAS 43AE Ear Simulator Kit According to ITU-T Rec. P57 Type 3.2
GRAS 43BA-1 1/4" 0.4cc High Frequency Coupler Kit
GRAS 43BB-1 Low-noise Ear Simulator System
GRAS 40PH CCP Free-field Array Microphone
GRAS 40PK CCP Free-field QC Microphone, ShortGRAS 40PK CCP Free-field QC Microphone, Short
GRAS 40LA 1/4" CCP Precision Surface Microphone, High Pressure
GRAS 40PP-S1 CCP Free-field QC Microphone, High Pressure
GRAS 40PS-1 CCP Surface Microphone
GRAS 40PL CCP Free-field Array Microphone, High Pressure
GRAS 40HT 1/2'' Lownoise Microphone System for Confined Spaces
GRAS 40SC CCP Probe Microphone
GRAS 40PP CCP Free-field QC Microphone
GRAS 40LS 1/4" CCP Precision Surface Microphone
GRAS 41AC-3 CCP Outdoor Microphone for Community & Airport Noise
GRAS 40PL-1 Short CCP Free-field Array Microphone, High Pressure
GRAS 46AZ 1/2'' CCP Free-field Standard Microphone Set, Low Frequency
GRAS 47AC 1/2" CCP Infra-Sound Microphone Set
GRAS 41AM Permanent Outdoor Microphone System for airport noise
GRAS 47AX 1/2'' CCP Flush-mount Microphone Set
GRAS 50AI-B 1/2" LEMO Intensity Probe
GRAS 50AI-C 1/2" LEMO Intensity Probe
GRAS 50AI-C 1/2" LEMO Intensity Probe
GRAS 47DX 1/8” CCP Flush-mount Microphone Set
GRAS 47AD 1/2'' CCP Flush-mount Microphone Set, High Sensitivity
GRAS 50AI-D 1/2" LEMO Intensity Probe
GRAS 40BI 1/4" Ext. Polarized Intensity Microphone Kit
GRAS 40SA Probe Microphone
GRAS 41AC-4 LEMO Outdoor Microphone for Community and Airport Noise (0 V pol.)
GRAS 40HH 1/2'' Lownoise Microphone System
GRAS 40GI 1/2" Prepolarized Intensity Microphone Pair
GRAS 43BB-1 Low-noise Ear Simulator System
GRAS 40AI 1/2" Ext. Polarized Intensity Microphone Pair
GRAS 40AK 1/2" Ext. Polarized Intensity Microphone Kit
GRAS 40AK 1/2" Ext. Polarized Intensity Microphone Kit
GRAS 40AN 1/2" Ext. Polarized Free-field Microphone, Low Frequency
GRAS 40AZ 1/2" Prepolarized Free-field Microphone, Low Frequency
GRAS 40HF 1'' Lownoise Microphone System
GRAS 50AI-L 1/2" CCP Intensity Probe
GRAS 40GK 1/2" Prepolarized Intensity Microphone Kit
GRAS 50AI-LP 1/2" CCP Rugged Intensity Probe
