GRAS麦克风RA0038 1/2“2cc耦合器IEC 60318-5

GRAS麦克风RA0038 1/2“2cc耦合器符合IEC 60318-5标准

GRAS RA0038 1/2“2cc耦合器符合IEC 60318-5标准

体积：2 cc 

ANSI：S3.7 

IEC：60318-5 

特殊功能：适用于1/2“压力话筒

技术

RA0038用于插入式助听器和耳机的声学测量。

它符合要求

IEC 60318-5（60126）2 cm 3耦合器，用于测量通过耳塞和耳塞耦合到耳朵的助听器和耳机

ANSI S3.7-1995美国国家耳机耦合器校准标准。

为避免可能损坏麦克风，RA0038可与配备其保护网格的麦克风配合使用，例如GRAS 40AG和合适的前置放大器，如GRAS 26AS，它是1/4英寸非常短的前置放大器，带有3米的集成电缆。

GRAS 40AG 1/2“外置偏光压力麦克风

频率范围：3.15 Hz至20 kHz 

Dyn范围：20 dBA至164 dB 

灵敏度：12.5 mV / Pa

RA0038也是GRAS 43AB人工耳的一部分。

上天不会辜负每一份努力和坚持

时光不会怠慢执着而勇敢的每一个人

当然 ，成功只青睐有准备的人

不过，懒人永远在为自己找借口

不求与人相比，但求超越自己

GRAS AA0070 3米Microdot - BNC电缆

GRAS AA0073-CL 定制长度Microdot - BNC电缆

GRAS AA0087-CL 定制长度Microdot - Microdot电缆

GRAS AL0029 1/4“麦克风支架，POM

GRAS AL0013 1/4“麦克风支架，不锈钢

GRAS AL0005 旋转头

GRAS AL0006

GRAS RA0022 1/4“Nosecone

GRAS AM0071 挡风玻璃用于1/4“麦克风

GRAS RA0127 用于1/4“麦克风的防雨帽

GRAS 12AL 具有A加权滤波器的1通道CCP功率模块

GRAS 12AQ 2通道通用电源模块，带信号调理和PC接口

GRAS 42AG 多功能声音校准器，1级

GRAS 42AP 智能活塞，0级

GRAS CA0029麦克风套件的可追踪校准

GRAS CA2301麦克风套件的认可校准

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.

人与人之间大的吸引力

不是你的容颜，

不是你的财富，

也不是你的才华，

而是你传递给对方的，

信赖和踏实、真诚和善良?

人生，

并不全是竞争和利益，

更多的是合作共赢！

懂得感恩，便会幸运

46BE + 6米线缆 12套  

GRAS 46BE 1/4“CCP自由场标准麦克风套装

频率范围：4 Hz至80 kHz 

Dyn范围：35 dBA至160 dB 

灵敏度：3.6 mV / Pa 

用途：用于一般声学诊断

技术

介绍

通过与客户的密切合作，我们知道数据安全非常重要，因为与不适合和不可靠的传感器相关的成本可能决定您的项目是否成功。

对于我们的用户而言，数据安全性可直接转化为更简单的麦克风选择，简单的系统配置和减少测量误差的请求。

为了满足这些要求，我们发明了麦克风套装概念。它简单，可靠，坚固，由麦克风盒和前置放大器组合而成，可作为一个单元进行校准。这消除了错误，因为只需要考虑一个灵敏度值，并且消除了污染接口的风险。将此与我们*且经过验证的设计相结合，您拥有当今业界可靠的测量麦克风套件。

典型应用和使用

46BE是一个自由场麦克风装置，因此针对所有声学应用进行了优化，其中主声源的位置是已知的，麦克风可以直接指向它，确保0°入射。然而，应该注意的是，1/4“麦克风主体和振膜的小尺寸还可以在不移除保护网格或需要进一步补偿的情况下实现高达20 kHz的压力和随机入射（扩散场）测量。如果您无法指出声场的性质，则此功能非常有用。）

高截止频率使其成为超声波诊断和脉冲测量的理想选择，通过振膜的小尺寸和快速响应可以获得小的失真和高分辨率。

关于温度范围，请参阅规格。如果需要更高的温度限制，我们建议考虑使用GRAS探头麦克风，其中麦克风和前置放大器可以与热源隔离。

设计

GRAS 46BE是一款高性能1/4“自由场标准麦克风套件，用于测量高频下的高声压级。在我们的洁净室环境中，该组件采用标签进行组装和密封。但是，麦克风套装可以如果您希望单独使用这些组件，请将其卸下。

麦克风

麦克风盒是高质量的IEC 61094 WS3F标准化GRAS 40BE  1/4“ 预极化自由场麦克风，专为在多种环境中的长期可靠性而设计。

通过驻极体获得预极化，所述驻极体在高度受控的条件下施加在麦克风背板上。然后对驻极体充电以匹配的麦克风灵敏度。

前置

放大器前置放大器是GRAS 26CB  1/4“CCP标准前置放大器，带有Microdot连接器，基于我们*的电路板基板。在业界，这些产品以其低自噪声，宽频率和出色的压摆率性能而闻名。

兼容性

为了执行规定，GRAS 46BE麦克风套件需要一个恒定电流输入模块，可以提供4 mA和24 V空载CCP电压。如果恒定电流供应较低，则驱动长电缆的能力降低，因此上限频率降低。如果电压较低，则会影响较高的动态范围。

麦克风套件采用10/32 UNC Microdot母头连接器端接。准备使用各种类型和长度的同轴电缆组件可提供标准和定制长度。

46BE符合IEEE 1451.4 TEDS v.1.0标准。如果您的测量平台支持传感器电子数据表，您将能够读取和写入属性和校准数据等数据。

系统验证

TEDS的功能对于确定哪个麦克风连接到哪个输入通道非常有用。但是，不检查麦克风是否符合规格。对于日常验证和检查测量设置，我们建议使用GRAS 42AG Sound Calibrator 等声源。

为了进行适当的灵敏度校准，我们建议使用GRAS 42AP智能活塞式电源等参考声源。

校准

出厂时，所有GRAS麦克风均已在可控实验室环境中使用可追溯校准设备进行校准。根据使用情况，测量环境和内部质量控制程序，我们建议每年至少重新校准一次麦克风。

我们提供两种校准作为可选的售后服务：GRAS可追溯校准和GRAS认可校准。

GRAS可追踪校准是由受过训练的人员根据既定程序和标准在受控条件下执行的可追溯校准。这与所有GRAS麦克风作为我们质量保证*的一部分的严格校准相同。

GRAS认可校准由GRAS认可校准实验室执行，该实验室已通过丹麦认证基金DANAK的ISO 17025认证。

如果您想要一个带有认可校准的新麦克风套件而不是默认的出厂校准，请在订购时。

质量和保修

GRAS麦克风套件由我们经过验证的标准产品组合制成，全部采用高品质材料和品牌部件制造，经过选择和加工，确保终身稳定性和坚固性。

所有零件均由丹麦工厂在经过验证的洁净室环境中由熟练和专业的操作员制造和组装。麦克风振膜，机身和*的保护网格由不锈钢制成，使麦克风设置能够抵抗物理损坏以及腐蚀性空气或气体造成的腐蚀。

这与强制镀金麦克风端子一起确保了高度可靠的连接。由于质量高，我们对有缺陷材料和工艺的保修期为5年。

服务

如果您错误地损坏了GRAS麦克风上的振膜，我们将在大多数情况下以非常合理的成本和短的周转时间进行更换。这不仅可以保护您的投资，还可以满足您的质量保证部门，因为您不必担心新的序列号等。

可选项目

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