GRAS测量麦克风146AE专门用于汽车测试等恶劣环境
GRAS测量麦克风 GRAS放大器 GRAS* GRAS风球 GRAS技术资料 GRAS办事处 GRAS代理 GRAS一级经销商
测量麦克风集已经结合起来，所以它们满足了用户的典型测量需求。独立于您的测量系统和应用程序，您应该能够找到一套适合您的需求。麦克风组可以直接连接到所有专业测量系统，并指示它们可用于CCP和7引脚LIMO输入。 Dimensions  如果你的测量平台支持IEEE 1451.4（TEDS）的智能换能器，你可以简单地插入麦克风，他们将用自己的特性、类型和校准数据来识别自己。多频道用户特别欣赏的特性。
CCP组使用高质量的同轴电缆，而LeMo组使用一种特殊的、软的多芯屏蔽电缆。如果要使用延长电缆，你应该考虑对上部频率和动态范围的可能影响。
所有麦克风组都是作为一个单元传送的，并相应地进行校准。这些集合用校准图递送，包括完整集的灵敏度值和频率响应曲线。因此，灵敏度值可以直接在系统设置中使用。
为了频繁地测量测量链，需要一个声源。GRAS为此提供了一个114分贝的声音校准器。根据使用情况和内部质量控制要求，我们建议至少每隔一年重新校准一次。为了更的验证，我们建议用活塞式校准。GRAS供应114dB和134dB活塞式。此外，我们建议对一个可靠的参考声源的校准。GRAS提供校准服务，并推荐每隔一年校准一次。
GRAS 146AE 1/2'' CCP Free-field Rugged Microphone Set
设计用于实际生活条件
146AE是世界上个坚固耐用的CCP麦克风，专门设计用于在现实生活中遇到的恶劣环境和条件下可靠地工作，如强振动、冲击、跌落、温度和潮湿或灰尘条件。
146AE的坚固设计使得在同一汽车测试装置中仅使用单一类型的麦克风执行许多不同类型的测量成为可能。这不仅提高了你的NVH测试性能和数据质量在崎岖的条件下，它也延长了你的测量设置的寿命。没有必要重复昂贵且耗时的测试，同时提供、有效的数据和高性能。
Introduction
GRAS 146AE is a rugged microphone specifically developed for harsh environments like Automotive testing. It combines the high precision and stability of a laboratory microphone with an unprecedented level of ruggedness, i.e. ability to work properly under adverse conditions such as shock, high temperatures, moisture, water spray, oil mists and dust. *For a short introduction to HALT, see the section "GRAS HALT" above **International Protection Marking, IEC standard 60529. ***IP67: Totally protected against dust, protected against the effect of water of up to 1 m of submersion.
IP test according to IEC 60529:2013 performed by DELTA - a part of FORCE Technology, Venlighedsvej 4, 2970 Hørsholm, Danmark. 
Typical free field response. GRAS Sound & Vibration reserves the right to change specifications and accessories without notice. A new Paradigm for Automotive Testing
With the accuracy of an IEC 61094-4/WS2F measurement microphone and ruggedness combined in one microphone you can now use a state of the art microphone that provides the advantage of quality and stability over an extended period of time, even when subjected to rough conditions. You can make critical quality measurements without having to replace the microphones, and in this way enhance the confidence in your measurements while at the same time minimizing downtime and maintenance costs. Not having to reconfigure the measurement setup again and again reduces costs and makes measurements easily comparable. This microphone is specifically designed to resist vibrations, shock and drop, and to produce accurate and repeatable measurements under harsh conditions. Application specific test fixtures, cables and accessories ensure easy positioning and handling. An integrated PowerOn LED indication shows when the microphone is connected and ready to measure. If there is a faulty connection the LED will not be lit during power up. Finally it will light up when the TEDS chip is read. This feature makes it possible to run a full "are we ready to measure?" test of all connected microphones by sequentially activating their TEDS. The 146AE is IP67 rated. All exposed parts are protected by water and oil repellent coating, which also is easy to clean. The coating can withstand heat and chemicals. In addition to the microphone set's basic resilience against shock, dirt and moisture a replaceable protective grid with water and dust filter adds an extra layer of flexible protection, including protection against high-velocity particles. This makes the microphone specifically well suited for high humidity, oil splash or outdoor measurement conditions. Simply replacing the filter-grid assembly will add to the time the microphone set can be mounted in the same test configuration. The 146AE has the same low temperature coefficient as a standard measurement microphone set as for example GRAS 46AE, but can withstand permanent exposure to temperatures from -40 to 125°C with no permanent change to its sensitivity. Comprehensively Tested
HALT
At GRAS we know that in order for you to trust your measurement results, signal quality, stability and robustness are essential. And because we also know how you handle and use the microphones in your daily work, we conduct a series of Highly Accelerated Lifetime Tests (HALT) to make sure that they perform under real life conditions. For the new rugged line of microphones, we have made our HALT even more challenging to reflect the extreme harsh environments and conditions in NVH measurements. It is vibrated for 60 hours at 8g, kept in temperatures varying from -40°C to +125°C , dropped horizontally and vertically from 150 cm on a hard surface and put through a tumbling test randomly falling 100 cm on a floor 100 times. IP67 Certification
Furthermore, the 146AE is certified water and dust-proof (IP67). Typical Applications and Use
The 146AE is a free-field microphone set designed for use in rough conditions such as NVH testing in the automotive industry. It is specifically designed for applications such as: Engine noise vibration testing Acoustic performance testing Pass by noise testing Power train induced noise Computer Model Validation/CAE validation Accelerated Life Cycle Testing Interior noise (Roof, AirCon, Squeak and Rattle) Entertainment and Communication, Voice control Vehicle component evaluations and certifications (Brake, Tire, Exhaust) Testing at temperatures up to 125°C Design
The GRAS 146AE is a high-performance 1/2” Constant Current Power (CCP) free-field rugged microphone set. As a CCP type microphone set it ensures simple cabling and stable connection setup, reducing costs. CCP connection standard is at the same time interchangeable with accelerometers and pressure sensors, giving a low multi-channel cost for combined Automotive and NVH testing. The microphone set is designed to be extraordinarily robust against strong vibrations, shock, drop, high temperatures and wet or dusty conditions. Among the most important design features are the following: The microphone set is a tightly sealed unit, and all exposed parts are protected by a water and oil repellent coating. New methods and materials have been used for the interior of the microphone to improve its ability to absorb shock and vibrations, while the microphone housing is still made by the same well proven type of stainless steel that is used for our standard measurement microphones. The diaphragm is more robust than what is usually used in measurement microphones. This, in combination with the coating, makes it easier to clean the diaphragm without damaging it. The diaphragm can be replaced during repair, keeping repair cost to a minimum. The microphone grid is made from special materials and furnished with a coating, and especially robust to drop and scratches. New materials and mounting methods have been used for the preamplifier section, making it more resistant to being dropped repeatedly. The microphone has two venting holes, reducing the risk of water or oil drops from blocking the venting. The venting holes are protected by a unique filter, and the measurement set is IP67 rated. Together with a GRAS BNC coax cable with waterproof sealing, your whole measurement setup is IP67 rated. The ruggedness of the basic microphone set is further enhanced by the replaceable, special shock absorbing protection grid with an integrated filter that protects against oil, moisture, dirt and high-velocity particles. 146AE is a free-field microphone. If you need to use it in a random incidence sound field, the RA0357 Random Incidence Corrector will change the response up to 10 kHz to diffuse field. Read more here. Replaceable Grid with Enhanced Protection
Shock Protection
The 146AE has a two-stage shock protection system. A special built-in shock absorber prevents minor and medium shock impacts from damaging the microphone. If subjected to a high impact shock, the protection grid will absorb the shock by deforming. The grid is scratch resistant and comes with protective coating. The grid has a slightly larger diameter than the grids used on standard microphone sets like the GRAS 46AE, and therefore a dedicated calibration adapter is required. This adapter is part of the delivery. Dust and Water Resistant Filter
The grid has an integrated filter that is made from an acoustically transparent mesh. This mesh offers protection against dust, dirt and high-velocity particles. It is water and oil repellant while remaining acoustically transparent. This filter protects the microphone in environments where very high humidity or direct water spray is present. It also protects against condensing. The filter is IP55 rated. Comprehensive Mounting Options
The 146AE comes with adapters for GoPro™ mounting. In this way you get a vast variety of mounting options using widely accepted mounting methods, e.g. Picatinny. Low Cost of Ownership
The comprehensive precautions we have taken to make the 146AE immune to adverse test conditions result in a number of benefits that all translate into low costs of ownership. The total life span of the microphone set will be many times that of a conventional microphone set that must be discarded due to damage from dirt, moisture, shock and vibrations. The same microphone set can remain mounted in a test configuration for extended periods of time. Separate test results are immediately comparable because the same stable microphones are used. The protection grid with its protective filters can easily be replaced, for example before dirt and oil fog are clogging the meshes. The CCP (Constant Current Power) technology allows for low cost per measurement channel. Combining these advantages you will obtain a lower cost of ownership, while at the same time enjoying the accuracy and stability of a laboratory microphone. This is also due to lower failure rates and improved productivity due to easier handling and control of your measurement setup. Compatibility
The 146AE conforms to IEC61094-4/WS2F, it is terminated with a BNC connector and requires a constant current of 2 mA. Ready to use standard coax cable assemblies of various types and lengths or waterproof, heat and chemical resistant cables are available. The 146AE 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 integrated PowerOn indication and the functionality of TEDS are 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 recommend using a sound source like the GRAS 42AG Multifunction Sound Calibrator with the calibration adapter that is part of the delivery. For proper sensitivity calibration we recommend using a reference sound source like the GRAS 42AP Intelligent Pistonphone. Calibration Data
Calibration Data for each individual microphone set can be accessed online via the serial number. In this way, you can easily download and configure your analyzer with calibration data. Accessible on-line are also correction data for the protective grid in a format that your analyzer can read at GRAS HALT
When our R&D team develops a measurement microphone, it must undergo the most demanding tests to prove that it can withstand our customers' daily test conditions. Using a series of Highly Accelerated Lifetime Tests (HALT) we ensure that our microphones live up to the high quality and precision that our customers have come to expect and trust. Our HALT tests actively accelerate the lifetime of a microphone by simulating the handling and use it is exposed to in real life situations. By stress testing to the limits we have been able to optimize the design for robustness and stability. Service, Warranty and Repair
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 instead of the default factory calibration, specify this when ordering. All parts are manufactured and assembled at the factory in Denmark by skilled and dedicated operators in a verified clean-room environment. Thanks to the high quality, our warranty against defective materials and workmanship is 5 years.
典型应用与使用
该146AE是一个自由场麦克风集设计用于恶劣条件下，如NVH测试在汽车行业。
它是专门为应用程序设计的，例如：
发动机噪声振动试验
声学性能测试
旁路噪声测试
动力传动系噪声
计算机模型验证/ CAE验证
加速寿命周期试验
室内噪音（屋顶、空调、吱吱声和拨浪鼓）
娱乐与通信，语音控制
车辆部件评估和认证（制动、轮胎、排气）
测试温度高达125°C
设计
GRAS 146AE是一种高性能的1/2“恒流电源（CCP）自由场坚固的麦克风组）。作为CCP型麦克风组，它确保了简单的布线和稳定的连接设置，降低了成本。CCP连接标准同时与加速度计和压力传感器互换，给组合式汽车和NVH测试带来低的多通道成本。
麦克风组被设计成在强振动、冲击、跌落、高温和潮湿或灰尘条件下非常坚固。其中重要的设计特点如下：
麦克风组是一个紧密密封的单元，所有暴露的部分都由防水拒油涂层保护。
新的方法和材料已被用于麦克风内部，以提高其吸收冲击和振动的能力，而麦克风外壳仍然是由同样良好证明的不锈钢类型，用于我们的标准测量麦克风。 隔膜比通常在测量麦克风中使用的更坚固。这与涂层结合在一起，可以更容易地清洗隔膜而不会损坏隔膜。隔膜可以在修理过程中更换，将维修费用保持在低限度。 麦克风格栅由特殊材料制成，并配有涂层，尤其对跌落和划痕具有鲁棒性。
新的材料和安装方法已被用于前置放大器部分，使其更耐反复下降。 麦克风有两个排气孔，减少了水或油滴堵塞排气的风险。通风孔由*的过滤器保护，测量装置为IP67额定值。
与GRAS BNC同轴电缆防水密封一起，您的整个测量设置IP67额定值。
基本的麦克风组的坚固性通过可更换的、特殊的防冲击保护栅格进一步增强，其具有防止油、湿气、污垢和高速颗粒的集成过滤器。 146AE是一个自由场麦克风。如果需要在随机入射声场中使用它，RA0357随机入射校正器将改变响应至10 kHz到扩散场。在这里阅读更多。 具有增强保护功能的可更换网格
冲击防护
146AE有两级防震系统。一个特殊的内置减震器，防止轻微和中等冲击影响麦克风损坏。如果受到高冲击冲击，保护栅将通过变形吸收冲击。 格栅抗划伤，并配有保护涂层。
网格的直径比GRAS46AE标准麦克风组使用的网格稍大，因此需要的校准适配器。此适配器是交付的一部分。 防尘滤水器
网格有一个集成的过滤器，是由一个声学透明网格。这个网格提供保护灰尘，污垢和高速粒子。它是防水和拒油，同时保持声学透明。该过滤器保护麦克风在非常高湿度或直接喷水的环境中存在。它还能防止冷凝。该过滤器为IP55额定值。 综合安装选项
146AE配有Gopro安装的适配器。通过这种方式，您可以使用广泛接受的安装方法，例如Picatinny，获得各种各样的安装选项。 低所有制成本
我们采取的综合措施，使146AE免疫不利的测试条件，导致一些好处，所有转化为低成本的所有权。麦克风组的总寿命将是传统麦克风组的许多倍，这是由于污垢、湿气、冲击和振动造成的损坏而必须丢弃的。
相同的麦克风组可以在测试配置中保持较长时间的安装。
单独的测试结果是可比的，因为使用相同的稳定麦克风。
具有保护过滤器的保护网可以很容易地被替换，例如在污垢和油雾堵塞网格之前。 CCP（恒流功率）技术允许每个测量通道的低成本。
结合这些优势，您将获得较低的拥有成本，同时享受实验室麦克风的准确性和稳定性。这也是由于较低的故障率和改进的生产率，因为更容易处理和控制您的测量设置。 兼容性
146AE符合IEC61094-4/WS2F，它用BNC连接器终止，并且需要恒定电流2毫安。
可使用各种类型和长度的标准同轴电缆组件或防水、耐热和耐化学电缆。
146AE是IEEE 1451.4 TEDS V 1兼容。如果您的测量平台支持换能器电子数据表，您将能够读取和写入数据，如属性和校准数据。 系统验证
集成的POWER指示和TEDS的功能对于确定哪一个麦克风连接到哪个输入通道是非常有用的。然而，它不是检查麦克风是否在规格之内。
为了日常验证和检查您的测量设置，我们建议使用GRAS42AG多功能声音校准器的声音源与校准适配器，这是交付的一部分。对于适当的灵敏度校准，我们建议使用参考声源，如GRAS 42AP智能活塞式。 校准数据
每个单独的麦克风组的校准数据可以通过序列号在线访问。通过这种方式，您可以轻松地下载和配置具有校准数据的分析器。
可访问在线也是保护网格的校正数据，您的分析器可以数据中读取该格式。 格拉斯停顿
当我们的研发团队开发一个测量麦克风时，必须经过苛刻的测试才能证明它能够经受住我们客户每天的测试条件。使用一系列高加速寿命试验（HALT），我们确保我们的麦克风达到我们客户期望和信任的高质量和高精度。我们的停止测试通过模拟处理和使用它在现实生活中暴露出来，积极地加速麦克风的寿命。通过对极限的应力测试，我们已经能够优化设计的鲁棒性和稳定性。 服务、保修和维修
离开工厂时，所有的GRAS麦克风都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一种可选的售后服务：GRAS溯源校准和GRAS认证校准。
GRAS溯源校准是根据既定程序和标准在受控条件下由受过训练的人员进行的可追溯校准。这是严格的校准，所有的GRAS麦克风作为我们的质量保证的一个组成部分。GRAS认可的校准是由丹麦认可基金DAAK认可的GRAS认可校准实验室进行的。如果你想要一个新的麦克风设置与认证的校准，而不是默认的工厂校准，请在订购时。 所有部件都是在丹麦工厂制造和组装的，由熟练的和专门的操作员在一个经过验证的洁净室环境中。
由于质量好，我们对有缺陷的材料和工艺的保修期为5年。
GRAS 146AE 1/2'' CCP Free-field Rugged Microphone Set
设计用于实际生活条件
146AE是世界上个坚固耐用的CCP麦克风，专门设计用于在现实生活中遇到的恶劣环境和条件下可靠地工作，如强振动、冲击、跌落、温度和潮湿或灰尘条件。
146AE的坚固设计使得在同一汽车测试装置中仅使用单一类型的麦克风执行许多不同类型的测量成为可能。这不仅提高了你的NVH测试性能和数据质量在崎岖的条件下，它也延长了你的测量设置的寿命。没有必要重复昂贵且耗时的测试，同时提供、有效的数据和高性能。
频率范围：3.15赫兹至20千赫
DYN范围：18分贝（A）至138分贝
灵敏度：50 mV/Pa
温度：-40至+125°C
湿度：0—95%
IP67
146AE是一种坚固耐用的自由场麦克风，适用于所有声学应用，其中麦克风可以直接指向声源。它被优化用于恶劣环境中的温度从40℃到125℃。
技术
介绍
GRAS 146AE是一种坚固的麦克风，专门用于汽车测试等恶劣环境。它结合了实验室麦克风的高精度和稳定性，具有的坚固性，即在恶劣条件下工作，例如冲击、高温、潮湿、水喷雾、油雾和灰尘。
汽车测试的新范式
随着IEC 61094-4/WS2F测量麦克风和坚固性结合在一个麦克风中的精度，现在可以使用先进的麦克风，即使在恶劣的条件下，也能在较长的时间内提供质量和稳定性的优点。
您可以在不必更换麦克风的情况下进行关键的质量测量，这样可以增强测量的信心，同时大限度地减少停机时间和维护成本。不必重新配置测量设置，降低了成本，使测量容易类似。 这种麦克风是专门设计的，以抵抗振动，冲击和跌落，并在恶劣的条件下产生和可重复的测量。测试夹具、电缆和附件确保容易定位和操作。
一个集成的POWER LED指示显示当麦克风连接和准备测量。如果有错误的连接，LED不会在上电时被点亮。后，当TEDS芯片被读取时，它会亮起来。这个特性使它可以运行一个完整的“我们准备好测量了吗？”通过连续激活他们的TEDS测试所有连接麦克风。
146AE为IP67额定值。所有裸露部位均采用拒水拒油涂层保护，清洗方便。涂层能承受热量和化学物质。
除了麦克风装置、污垢和湿气的基本弹性之外，还有一个可更换的保护栅，包括水和灰尘过滤器，增加了额外的柔性保护层，包括对高速粒子的保护。这使得麦克风特别适合于高湿度、溅油或户外测量条件。简单地更换过滤器网格组件将增加麦克风组可以安装在相同的测试配置中的时间。
146AE具有与标准测量麦克风一样的低温系数，例如GRAS 46AE，但能够承受温度从-40到125°C的暴露，对其灵敏度没有变化
综合测试
停顿
在GRAS中，我们知道为了让你相信你的测量结果，信号质量、稳定性和健壮性是*的。因为我们也知道你如何处理和使用麦克风在日常工作中，我们进行了一系列的高加速寿命测试（HALT），以确保它们在真实的生活条件下进行。
对于新的坚固的麦克风线路，我们使我们的停机更具挑战性，以反映恶劣的环境和条件下的NVH测量。在8℃下振动60小时，保持在40℃至125°C的温度，从硬表面150厘米水平和垂直地下降，并通过一次跌倒试验，在地板上随机下降100厘米100次。
IP67认证
此外，146AE是认证的水和防尘（IP67）。
丹麦GRAS麦克风146AE安装校准指导 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 | 
