GRAS麦克风46BH-1北京总经销

GRAS麦克风     GRAS放大器   GRAS北京销售中心   GRAS麦克风厂家

GRAS 46BH-1 1/4" LEMO Pressure Standard Microphone Set, High pressure

Freq range: 10 Hz to 20 kHz

Dyn range: 54 dB(A) to 193 dB

Sensitivity: 0.4 mV/Pa

GRAS 46BH-1 1/4“LEMO压力标准麦克风套件，高压

频率范围：10 Hz至20 kHz 

Dyn范围：54 dB（A）至193 dB 

灵敏度：0.4 mV / Pa

典型的频率响应（无保护网格）。

针对不同入射角的自由场校正

微笑，不是因为快乐的太久，是太久的时间里忘记去悲伤。有些人，有些事，只有用心去体味，才能了解得更真实。我们在人生的旅途中，少不了磕磕绊绊，雨雨风风。可是人生路上，总会有盏心灵的明灯照耀我们，一步步，向前进

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，因为与不合适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，数据安全性可直接转换为更轻松选择麦克风，简化系统配置和减少测量误差的请求。

外形尺寸

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。将其与我们*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

46BH-1是压力麦克风套件，因此优化用于闭合耦合器中声源的声学测量或边界或墙壁处的声压测量; 在这种情况下，麦克风形成墙壁的一部分并测量墙壁本身的声压。

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 46BH-1是一款高性能标准麦克风套装。在我们的洁净室环境中，装置组装并用标签密封。但是，如果您希望单独使用这些组件，则可以卸下麦克风组件。

麦克风

麦克风盒是高质量的IEC 61094 WS3F标准化GRAS 40BH  1/4“外部极化压力麦克风，专为在多种环境中的长期可靠性而设计。

前置

放大器前置放大器是GRAS 26AC-1前置放大器，它包含TEDS并基于我们*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

为了按照规定执行，GRAS 46BH-1麦克风套件需要一个电源模块或分析仪输入，可为前置放大器提供电源和200 V极化。如果电源较低，则驱动长电缆的能力降低，因此降低了上限频率。如果电压较低，则会影响较高的动态范围。

麦克风套件采用5针mini-LEMO连接器端接。随时可以使用带有各种类型和长度的LEMO连接器的电缆组件，可提供标准长度和定制长度。

46BH-1是IEEE 1451.4 TEDS 27v。符合1.0。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，不是检查麦克风是否符合规格。对于每日验证和检查您的测量设置，我们建议使用GRAS 42AB 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麦克风均已在受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培训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。

了解更多gras / calib。

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。

所有部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，主体和*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保证了高度可靠的连接。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

如果您误操作损坏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。

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 application and use

The 46BH-1 is a pressure microphone set and as such optimized for acoustic measurements of the sound source in a closed coupler or the measurement of sound pressure at a boundary or wall; in which case the microphone forms part of the wall and measures the sound pressure on the wall itself.

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 46BH-1 is a high-performance standard microphone set. 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 40BH 1/4" Externally Polarized Pressure Microphone, designed for long-term reliability in multiple environments.

Preamplifier

The preamplifier is the GRAS 26AC-1 Preamplifier which is inclusive TEDS 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 46BH-1 microphone set requires a power module or an analyzer input which can supply the preamplifier with power as well as 200 V polarization. If the power 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 5-pin mini-LEMO connector. Ready to use cable assemblies with LEMO connectors of various types and lengths are available in standard as well as customized lengths.

The 46BH-1 is IEEE 1451.4 TEDS 27v. 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 42AB 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.

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

Gras          46BP-1

Gras          46DP-1

Gras          46BH-1

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GRAS AA0091 3米LEMO 5针 - LEMO 7针电缆

GRAS AA0092-CL 定制长度LEMO 5针 - LEMO 7针电缆

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 12AA 具有增益，滤波器和SysCheck发生器的2通道功率模块

GRAS 12AK 具有增益，滤波器和SysCheck发生器的1通道功率模块

GRAS 12AQ 2通道通用电源模块，带信号调理和PC接口

GRAS 42AB Sound Calibrator，Class 1

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