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GRAS麥克風46BE深圳銷售中心GRAS放大器
最近更新時間：2018-12-29
提 供 商：上海圓馨能源科技有限公司資料大小：113.7KB
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GRAS麥克風46BE深圳銷售中心GRAS放大器
GRAS麥克風 GRAS放大器 GRAS前置器 GRAS一級經銷商 GRAS*
上天不會辜負每一份努力和堅持
時光不會怠慢執著而勇敢的每一個人
當然 ，成功只青睞有準備的人
不過，懶人永遠在為自己找借口
不求與人相比，但求超越自己
GRAS AA0070 3米Microdot - BNC電纜
GRAS AA0073-CL 定制長度Microdot - BNC電纜
GRAS AA0087-CL 定制長度Microdot - Microdot電纜
GRAS AL0029 1/4“麥克風支架，POM
GRAS AL0013 1/4“麥克風支架，不銹鋼
GRAS AL0005 旋轉頭
GRAS AL0006
GRAS RA0022 1/4“Nosecone
GRAS AM0071 擋風玻璃用于1/4“麥克風
GRAS RA0127 用于1/4“麥克風的防雨帽
GRAS 12AL 具有A加權濾波器的1通道CCP功率模塊
GRAS 12AQ 2通道通用電源模塊，帶信號調理和PC接口
GRAS 42AG 多功能聲音校準器，1級
GRAS 42AP 智能活塞，0級
GRAS CA0029麥克風套件的可追蹤校準
GRAS CA2301麥克風套件的認可校準
GRAS 46BE 1/4" CCP Free-field Standard Microphone Set
Freq range: 4 Hz to 80 kHz
Dyn range: 35 dBA to 160 dB
Sensitivity: 3.6 mV/Pa
Use: For general acoustic diagnostics
Technology
Introduction
Through a close cooperation with our customers, we know that data-safety is highly important because the costs related to unsuited and unreliable sensors may determine whether your project turns into a success or not.
For our users, data safety translates directly into requests for easier microphone selection, simple system configuration and reduction of measurement errors.
To meet these requirements, we invented the microphone set concept. It is simple, reliable and robust and consists of a microphone cartridge and preamplifier combination, which is calibrated as one unit. This eliminates errors because there is only one sensitivity value to account for and the risk of contaminating the interface is eliminated. Combine this with our unique and proven design and you have the most reliable measurement microphone sets available in the industry today.
Typical applications and use
The 46BE is a free-field microphone set and as such optimized for all acoustic applications, where the location of the main sound source is known and the microphone can be pointed directly at it ensuring 0° incidence. However it should be noted that the small size of the 1/4" microphone body and diaphragm also enables pressure and random-incidence (diffuse field) measurements up to 20 kHz without removing the protection grid or need for further compensation. This all-use feature is very useful if you are not able to point out the nature of your sound field.)
The high cut-off frequency makes it ideal for ultra-sonic diagnostics and impulse measurements, where minimum distortion and high resolution are obtained by the small size and fast response of the diaphragm.
Regarding temperature range, see the Specifications. Should higher temperature limits be required, we recommend considering the GRAS probe microphones where the microphone and preamplifier can be isolated from the hot source.
Design
The GRAS 46BE is a high-performance 1/4" free-field standard microphone set for measuring high sound pressure levels at high frequencies. In our clean-room environment the set is assembled and sealed with a label. However, the microphone set can be dismounted, if you wish to use the components separately.
Microphone
The microphone cartridge is the high-quality IEC 61094 WS3F standardized GRAS 40BE 1/4" Prepolarized Free-Field Microphone, designed for long-term reliability in multiple environments.
The prepolarization is obtained through an electret that is inflicted on the microphone back-plate under highly controlled conditions. The electret is then charged to match the specified microphone sensitivity.
Preamplifier
The preamplifier is the GRAS 26CB 1/4" CCP Standard Preamplifier with Microdot connector, and based on our well-known circuit board substrates. In the industry these are famous for their low self-noise, wide frequency and excellent slew rate performance.
Compatibility
To perform as specified the GRAS 46BE microphone set requires a constant current input module that can deliver 4 mA and 24 V unloaded CCP voltage supply. If the constant current supply is lower, the capability of driving long cables is reduced and consequently the upper frequency is reduced. If the voltage supply is lower it will influence the upper dynamic range.
The microphone set is terminated with a 10/32 UNC Microdot female connector. Ready to use coax cable assemblies of various types and lengths are available in standard as well as customized lengths.
The 46BE is IEEE 1451.4 TEDS v. 1.0 compliant. If your measurement platform supports Transducer Electronic Data Sheets you will be able to read and write data like properties and calibration data.
System verification
The functionality of TEDS is very useful to determine which microphone is connected to which input channel. However, it is not a check of whether the microphone is within specifications or not. For daily verification and check of your measurement setup, we therefore recommend using a sound source like the GRAS 42AG Sound Calibrator.
For proper sensitivity calibration we recommend using a reference sound source like the GRAS 42AP Intelligent Pistonphone.
Calibration
When leaving the factory, all GRAS microphones have been calibrated in a controlled laboratory environment using traceable calibration equipment. Depending on the use, measurement environment and internal quality control programs we recommend that the microphone is recalibrated at least once a year.
We offer two kinds of calibration as an optional after-sales service: GRAS Traceable Calibration and GRAS Accredited Calibration.
GRAS Traceable Calibration is a traceable calibration performed by trained personnel under controlled conditions according to established procedures and standards. This is identical to the rigorous calibration that all GRAS microphones are subjected to as an integral part of our quality assurance.
GRAS Accredited Calibration is performed by the GRAS Accredited Calibration Laboratory that has been accredited in accordance with ISO 17025 by DANAK, the Danish Accreditation Fund.
If you want a new microphone set delivered with an accredited calibration in stead of the default factory calibration, specify this when ordering.
Learn more at gras/calib.
Quality and warranty
GRAS microphone sets are made of components from our proven standard portfolio and are all manufactured of high-quality material and branded parts that were chosen and processed to ensure life-long stability and robustness.
All parts are manufactured and assembled at the factory in Denmark by skilled and dedicated operators in a verified clean-room environment. The microphone diaphragm, body and unique protection grid are made of high-grade stainless steel and make the microphone set resistant to physical damage as well as corrosion caused by aggressive air or gasses.
This, together with the enforced gold-plated microphone terminal guarantees a highly reliable connection. Thanks to the high quality, our warranty against defective materials and workmanship is 5 years.
Service
Should you by mistake damage the diaphragm on a GRAS microphone we will in most cases be able to exchange it at a very reasonable cost and short turn-around time. This not only protects your investment but also meets your quality assurance department since you do not have to worry about new serial numbers etc.
人與人之間大的吸引力
不是你的容顏，
不是你的財富，
也不是你的才華，
而是你傳遞給對方的，
信賴和踏實、真誠和善良?
人生，
并不全是競爭和利益，
更多的是合作共贏！
懂得感恩，便會幸運
46BE + 6米線纜 12套
GRAS 46BE 1/4“CCP自由場標準麥克風套裝
頻率范圍：4 Hz至80 kHz
Dyn范圍：35 dBA至160 dB
靈敏度：3.6 mV / Pa
用途：用于一般聲學診斷
技術
介紹
通過與客戶的密切合作，我們知道數據安全非常重要，因為與不適合和不可靠的傳感器相關的成本可能決定您的項目是否成功。
對于我們的用戶而言，數據安全性可直接轉化為更簡單的麥克風選擇，簡單的系統配置和減少測量誤差的請求。
為了滿足這些要求，我們發明了麥克風套裝概念。它簡單，可靠，堅固，由麥克風盒和前置放大器組合而成，可作為一個單元進行校準。這消除了錯誤，因為只需要考慮一個靈敏度值，并且消除了污染接口的風險。將此與我們*且經過驗證的設計相結合，您擁有當今業界可靠的測量麥克風套件。
典型應用和使用
46BE是一個自由場麥克風裝置，因此針對所有聲學應用進行了優化，其中主聲源的位置是已知的，麥克風可以直接指向它，確保0°入射。然而，應該注意的是，1/4“麥克風主體和振膜的小尺寸還可以在不移除保護網格或需要進一步補償的情況下實現高達20 kHz的壓力和隨機入射（擴散場）測量。如果您無法指出聲場的性質，則此功能非常有用。）
高截止頻率使其成為超聲波診斷和脈沖測量的理想選擇，通過振膜的小尺寸和快速響應可以獲得小的失真和高分辨率。
關于溫度范圍，請參閱規格。如果需要更高的溫度限制，我們建議考慮使用GRAS探頭麥克風，其中麥克風和前置放大器可以與熱源隔離。
設計
GRAS 46BE是一款高性能1/4“自由場標準麥克風套件，用于測量高頻下的高聲壓級。在我們的潔凈室環境中，該組件采用標簽進行組裝和密封。但是，麥克風套裝可以如果您希望單獨使用這些組件，請將其卸下。
麥克風
麥克風盒是高質量的IEC 61094 WS3F標準化GRAS 40BE 1/4“ 預極化自由場麥克風，專為在多種環境中的長期可靠性而設計。
通過駐極體獲得預極化，所述駐極體在高度受控的條件下施加在麥克風背板上。然后對駐極體充電以匹配的麥克風靈敏度。
前置
放大器前置放大器是GRAS 26CB 1/4“CCP標準前置放大器，帶有Microdot連接器，基于我們*的電路板基板。在業界，這些產品以其低自噪聲，寬頻率和出色的壓擺率性能而聞名。
兼容性
為了執行規定，GRAS 46BE麥克風套件需要一個恒定電流輸入模塊，可以提供4 mA和24 V空載CCP電壓。如果恒定電流供應較低，則驅動長電纜的能力降低，因此上限頻率降低。如果電壓較低，則會影響較高的動態范圍。
麥克風套件采用10/32 UNC Microdot母頭連接器端接。準備使用各種類型和長度的同軸電纜組件可提供標準和定制長度。
46BE符合IEEE 1451.4 TEDS v.1.0標準。如果您的測量平臺支持傳感器電子數據表，您將能夠讀取和寫入屬性和校準數據等數據。
系統驗證
TEDS的功能對于確定哪個麥克風連接到哪個輸入通道非常有用。但是，不檢查麥克風是否符合規格。對于日常驗證和檢查測量設置，我們建議使用GRAS 42AG Sound Calibrator 等聲源。
為了進行適當的靈敏度校準，我們建議使用GRAS 42AP智能活塞式電源等參考聲源。
校準
出廠時，所有GRAS麥克風均已在可控實驗室環境中使用可追溯校準設備進行校準。根據使用情況，測量環境和內部質量控制程序，我們建議每年至少重新校準一次麥克風。
我們提供兩種校準作為可選的售后服務：GRAS可追溯校準和GRAS認可校準。
GRAS可追蹤校準是由受過訓練的人員根據既定程序和標準在受控條件下執行的可追溯校準。這與所有GRAS麥克風作為我們質量保證*的一部分的嚴格校準相同。
GRAS認可校準由GRAS認可校準實驗室執行，該實驗室已通過丹麥認證基金DANAK的ISO 17025認證。
如果您想要一個帶有認可校準的新麥克風套件而不是默認的出廠校準，請在訂購時。
質量和保修
GRAS麥克風套件由我們經過驗證的標準產品組合制成，全部采用高品質材料和品牌部件制造，經過選擇和加工，確保終身穩定性和堅固性。
所有零件均由丹麥工廠在經過驗證的潔凈室環境中由熟練和專業的操作員制造和組裝。麥克風振膜，機身和*的保護網格由不銹鋼制成，使麥克風設置能夠抵抗物理損壞以及腐蝕性空氣或氣體造成的腐蝕。
這與強制鍍金麥克風端子一起確保了高度可靠的連接。由于質量高，我們對有缺陷材料和工藝的保修期為5年。
服務
如果您錯誤地損壞了GRAS麥克風上的振膜，我們將在大多數情況下以非常合理的成本和短的周轉時間進行更換。這不僅可以保護您的投資，還可以滿足您的質量保證部門，因為您不必擔心新的序列號等。
可選項目
Gras 46AE
Gras 46AC
Gras 46AP
Gras 46AR
Gras 46AF
Gras 46BF
Gras 46AG
Gras 46DP
Gras 46AO
Gras 46AQ
Gras 46AM
Gras 46BD
Gras 46DD
Gras 46AN
Gras 46EN
Gras 46EU
Gras 46AU
Gras 46BP
Gras 46BH
Gras 40SC
Gras 46SA
Gras 26AB
Gras 26AN
Gras 46AR
Gras 26AC
Gras 26HG
Gras 26AS
Gras 26CK
Gras 26CB
Gras 26CG
Gras 26CC
Gras 26CS
Gras 41AC
Gras 40HF
Gras 40HH
Gras AL0030
Gras AA0079
Gras 46BL
Gras 46BD
Gras 46BE
Gras OP0040
Gras OP0041
Gras OP0030
Gras OP0031
Gras OP0032
Gras OP0050
Gras OP0051
Gras OP0070
Gras 44AA
Gras 44AB
Gras OP0045
Gras OP0046
Gras 43AH
Gras 43AI
Gras AA0032
Gras AA0033
Gras AA0034
Gras AA0035
Gras AA0070
Gras AA0073-CL
Gras 12AL
Gras 12AX
Gras 42AG
Gras 42AP