ホッティンガー・ブリュエル・ケアー（HBK） List of Products and Services

The LDS V8750 vibration testing system has been updated with energy-saving features (COOL mode), an intuitive user interface, a preventive maintenance diagnostic system, and an Induction Centering System (ICS), enhancing the longevity and shock testing performance of the LDS V875LS. The V8750 vibration testing system offers a variety of configurations, including basic setups as well as trunnions with Lie-E-Air (air springs) and combo systems with horizontal tables. Additional options include V-groove casters, air glides, temperature control systems, and vertical tables.

• Vibration Testing

When conducting workplace noise assessments or noise complaint investigations, or when involved in operations that generate noise, a sound level meter that allows for easy and convenient noise measurements at any time is required. The B&K 2245 model is a sound level meter designed with such customers in mind. Offered by Brüel & Kjær, the most trusted name in the acoustic measurement solutions industry worldwide, the B&K 2245 Class 1 sound level meter comes in a reliable and user-friendly package that includes everything needed. <Mobile App> The B&K 2245 sound level meter is equipped with a wealth of features that can be easily accessed through a variety of specially created mobile apps. Each app is designed to assist with specific jobs. Each device can license multiple apps, making it as easy to switch tasks as it is to switch apps.

• Noise Inspection

This kit uses a handheld microphone array to create a noise map in real-time across a wide frequency range and identify sound sources. The portable array can be equipped with a tablet computer that displays a real-time sound map of the specified location. It can be used with minimal training, allowing users to quickly identify the location of noise sources, take screenshots, and record videos of events or problem areas of interest for subsequent analysis. Since it can be played back instantly, users can adjust necessary settings such as frequency range while ensuring that the data is being recorded correctly. ● For more details, please download the catalog or contact us.

• Noise Inspection
• others

"Sonoscout" is an NVH recorder that allows you to collect and verify noise and vibration data in vehicles using an iPad. Its portability and the fact that it does not require a PC have received positive feedback. The connection between the iPad and the data collection front end is wireless, so there is no need to worry about wiring. It is ideal for the first stage of data collection. You can use it for validity verification before passing data to post-processing software such as PULSE Reflex(TM) and NVH simulators. 【Features】 - Wireless connection of various sensors (microphones, accelerometer pickups, etc.) to the iPad for data transfer - Data collection and analysis using a dedicated app on the iPad (the app is available for download from the App Store) - The app is free to download, and you can experience all features using evaluation data - It is also possible to record directly to an SD card inserted in the front end *For more details, please contact us.

• Recorders
• Noise Inspection
• Vibration Inspection

The 2250 model can accommodate software modules that include frequency analysis, logging (profiling), and recording of measurement signals. These modules can be used separately, but it is also possible to pre-configure all modules at the time of shipment. By combining software modules with innovative hardware, this measuring instrument becomes a dedicated solution for high-precision measurements in the fields of environmental measurement and workplace measurement. As a result, in addition to the functions currently required, there is also the potential for future functionality enhancements, ensuring that your investment is well protected. ● For more details, please download the catalog or contact us.

• Noise Inspection
• Other electronic measuring instruments

Whether at home, at work, or during leisure, our lives are constantly exposed to an increasing number of noise sources. Televisions, kitchen appliances, neighbors, traffic, factories - all of these can contribute to noise pollution. One way to reduce noise pollution is to lower the level of noise sources, but in architectural acoustics, the approach is to block the propagation of sound from the source. Brüel & Kjær offers a complete range of applications used for compliance checks with building regulations and identifying sound insulation deficiencies. For more details, please contact us.

• Other network tools
• Other information systems

Indoor acoustics deals with the generation, propagation, perception, measurement, and modeling of sound within indoor spaces. The spaces of interest include homes, offices, workshops, factories, lecture halls, theaters, concert halls, and terminal stations. The most important parameter for expressing the acoustic characteristics of a room is the reverberation time, but other parameters that indicate the quality of music and the intelligibility of conversation are also important. Measurements of indoor acoustics are conducted, for example, to verify the performance of new buildings or to troubleshoot existing buildings. Additionally, modeling of indoor acoustics is performed when planning new buildings or considering renovations of existing ones. For more details, please contact us.

• Other network tools
• Other information systems

Environmental noise and vibration are unwanted sounds and vibrations generated from various sources such as factories, roads, railways, construction sites, and aircraft. In addition to the above, noise also comes from numerous sources such as sports facilities, shooting ranges, and amusement parks. Since these sources have different characteristics, experts face individual issues when evaluating them. The handling of such problems varies significantly by country and is heavily dependent on culture, economy, and politics. Brüel & Kjær provides solutions for all requirements, from checking noise and vibration levels to detailed analysis, from measurement to prediction, and from post-processing to report preparation. Please contact us for more details.

• Other network tools
• Other information systems

Due to production and assembly tolerances, wear and load variation, the moving parts in any rotating machine will sooner or later cause annoying vibrations that eventually lead to breakdowns. Machine Diagnostics is the PULSE configuration containing the basic tools addressing vibration problems in rotating machines. For more details, please contact us.

• Other network tools
• Other information systems

As noise control issues and sound quality have become important aspects of product design, acoustic material testing has become increasingly relevant for engineers, designers, and manufacturers across various industries. Acoustic material testing is conducted to measure the acoustic properties of materials (such as absorption coefficient, reflection coefficient, impedance, and admittance). There are various methods for measuring the acoustic properties of materials. It is necessary to place the material in a known sound field and measure the impact of the material on that sound field. There are a series of standards (such as JIS A1405-2 (ISO 10534-2), ASTM E1050-08, ASTM E2611-09, etc.) that clearly define special equipment to ensure acoustic conditions, accuracy, and reproducibility for material testing. For more details, please contact us.

• Other network tools
• Other information systems

To determine the optimal design changes for efficiently reducing the noise radiated from the product, it is necessary to clarify characteristics such as the frequency components, the positions of sound sources with significant impact, and the relative contributions of each sound source. Sound source exploration is equipped with various tools for conducting such characteristic analysis. For more details, please contact us.

• Other network tools
• Other information systems

Conventional field pass-by measurement is still the only method for certifying exterior radiation noise during driving, but indoor pass-by testing is a highly effective method that allows for reproducible troubleshooting of exterior noise in a controlled environment, such as a semi-anechoic chamber. For more details, please contact us.

• Other network tools
• Other information systems

The term "quality" is generally associated with expensive and high-end products. Today, the quality of products has become a cornerstone for suppliers and sub-suppliers. Customers have demands and expectations. In manufacturing, a great deal of effort is devoted to optimizing design and manufacturing methods to achieve quality. However, various mistakes that occur during assembly can manifest as unacceptable noise and vibration levels in the finished product. To prevent such situations, the only solution is to verify whether the product meets the requirements at the final stage of the manufacturing line. This is what is known as manufacturing line testing, where all units are inspected during the manufacturing process. For more details, please contact us.

• Other network tools
• Other information systems

This is an introduction to PULSE applications such as acoustic applications, machine diagnostics, electroacoustics, structural analysis, environmental noise and vibration, experiment/data management, and the PULSE platform. For more details, please contact us.

• Other network tools
• Other information systems

Currently, there are many analytical tools used for research and development that focus on conducting single tests, and they are designed to be suitable for such applications. However, there are also many programs in various industries that conduct repeated tests on subjects with various configurations and modifications over a large number of iterations. This is known as repeated testing. The test content is generally standardized and is often conducted in dedicated testing facilities. For more details, please contact us.

• Other network tools
• Other information systems

Radiated noise from machines and devices is increasingly recognized as a factor that enhances marketability. Reducing the noise emitted from products directly correlates with a decrease in the noise exposure for users and those nearby. Retail customers, whether individuals or businesses, highly value this connection, and as a result, they have become more aware of the labeling of radiated noise when purchasing products. For more details, please contact us.

• Other network tools
• Other information systems

The importance of evaluating the sound quality of noise generated during the comprehensive quality assessment of products has never been higher. In various products ranging from automobiles to manual tools, not only the level of noise emitted by the product but also its sound quality influences purchasing intentions. A suitable sound can even lead to increased sales. Many factors are beginning to affect the sound quality evaluation process. Traditional objective measurements and analyses, such as A-weighted sound pressure levels and FFT analysis, are not sufficient for analyzing product sound. Ultimately, it is the human ear that determines the quality of sound, making customer surveys and sensory evaluation tests important for establishing acceptable ranges of sound quality. For more details, please contact us.

• Other network tools
• Other information systems

Structural analysis is a field of engineering that deals with the behavior of structures subjected to dynamic loads (vibrations). While it is possible to accurately predict the behavior of structures under static loads, dynamic loads require parameters that are difficult to model, such as structural damping. Therefore, to accurately determine the response of structures to dynamic loads, it is necessary to conduct some form of structural analysis test, such as a modal test. Modal testing allows for the experimental determination of the modal parameters of a structure. Modal parameters include resonance frequency, damping, and mode shapes. The resonance frequency is the frequency at which the response is amplified significantly beyond the applied excitation force. When the excitation force is close to the structure's resonance frequency, it often leads to adverse effects, making it important to know the resonance frequency. Excessive vibrations caused by resonance can lead to fatigue failure, damage to delicate parts of the structure, and in extreme cases, structural collapse. For more details, please contact us.

• Other network tools
• Other information systems

Vibration testing is a test that evaluates how well components and assemblies can withstand real environmental conditions by applying vibrations and shocks. Vibration tests are conducted across a wide range of applications, from circuit boards and aircraft to automobiles and home appliances. When conducting vibration tests in the field or laboratory, equipment such as data analyzers, climate chambers, control devices, measuring instruments, and vibration exciters are required. Brüel & Kjær offers all the necessary equipment for excitation and measurement to ensure high-quality measurements that comply with domestic and international standards (DIN, ISO, BS, MIL, IEC, ASTM, etc.). For more details, please contact us.

• Other network tools
• Other information systems

The product design policy of simplicity, reliability, and ingenuity for the 2270/2250 models has been realized in the FFT analysis software, which offers a user-friendly color display, ultra-high resolution with up to 6400 line analysis, and a wide dynamic range, along with important display and measurement settings through tap-and-drag operations. With the FFT analysis software and FFT-based tone assessment software, it is easy to conduct objective and subjective tone assessments using the graphic user interface of the 2270/2250 models. ● For more details, please download the catalog or contact us.

• Analytical Equipment and Devices
• Other measurement, recording and measuring instruments
• others

Noise Source Identification (NSI) is useful for optimizing the radiated sound of a wide range of products, from automobiles, home appliances, and power tools to large machinery and components such as engines, tires, gearboxes, and exhaust systems. By using methods based on microphone arrays, high-quality results can be obtained in a short measurement time. Additionally, by combining acoustic holography and beamforming techniques, accurate and high-resolution mapping across the entire audible frequency range is possible. ● For more details, please download the catalog or contact us.

• others

By attenuating noise signals in the front-end part of the measurement device system, it is possible to increase the gain at the input of the analyzer, avoid overload, and improve the signal-to-noise ratio (SN ratio). The low output impedance allows for the extension of cables for use. The Model 2699 can be used in a wide range of environmental conditions due to its robust design. ● For more details, please download the catalog or contact us.

• Other measurement, recording and measuring instruments

The concept of NEXUS(TM) is very flexible. It allows for the combination of multiple input/output modules based on a single mainframe, enabling the configuration of conditioning amplifiers according to customer preferences. A single device can be configured with independent acoustic and vibration measurement channels ranging from 1ch to 4ch. NEXUS can be reconfigured as needed. For example, a 1-channel charge amplifier can be upgraded to a 2-channel charge/2-channel microphone conditioning amplifier. With the ability to add A, B, C, D characteristic filters and integration filters, as well as hardware/software updates, NEXUS becomes a more flexible conditioning amplifier. ● For more details, please download the catalog or contact us.

• Other measurement, recording and measuring instruments

The 3053 model, which has 12 channels of input in the world's smallest class, can be used as a standalone module or by combining multiple modules. Furthermore, since the front panel is interchangeable, it can accommodate various transducers, making it suitable for a wide range of applications. The 3053 model LAN-XI 12-channel module, the world's smallest 12-channel acoustic and vibration analysis hardware, achieves both a 12-channel standalone system and a system combined with over 60 channels. The module features a highly robust industrial design, making it ideal for field use. Additionally, plug-and-play functionality allows for easy configuration changes, providing maximum flexibility and cost-effectiveness. ● For more details, please download the catalog or contact us.

• others

The concept of NEXUS is very flexible. It allows for the combination of multiple input/output modules based on a single mainframe, enabling the configuration of conditioning amplifiers according to customer preferences. It can configure independent acoustic and vibration measurement channels ranging from 1ch to 4ch in a single device. NEXUS can be reconfigured as needed. For example, a 1-channel charge amplifier can be upgraded to a 2-channel charge/2-channel microphone conditioning amplifier. With the ability to add hardware/software updates such as A, B, C, D characteristic filters and integration filters, NEXUS becomes a more flexible conditioning amplifier. A microprocessor is used for control, display, and interface, while the signal is kept in analog form to achieve the optimal S/N ratio and minimize distortion as much as possible. NEXUS is compatible with transducers that have TEDS (Transducer Electronic Data Sheet) according to IEEE1451.4. For more details, please contact us.

• Amplifier

This impact hammer series is designed for excitation of small to medium structures, such as engine blocks, vehicle frames, and automotive components. Acceleration pickups (or laser velocimeters, etc.) are used to measure the response to excitation. A multi-channel FFT analyzer, such as the PULSE(TM) system, can be used to obtain the frequency response function and mode shapes of the test object. Unlike electrodynamic exciters, impact hammers do not add mass to the test object and are also portable. ● For more details, please download the catalog or contact us.

• hammer

Noise Source Identification (NSI) is useful for optimizing the radiated sound of a wide range of products, from automobiles, home appliances, and power tools to components such as engines, tires, gearboxes, and exhaust systems. The goal of NSI is to identify the location, frequency components, and acoustic power of the sound source that contributes the most to the object in question. By ranking the contributions of each sound source, it is possible to determine where design changes would most effectively improve the overall radiated sound. Using methods based on microphone arrays allows for high-quality results to be obtained with short measurement times. Additionally, by combining acoustic holography and beamforming techniques, accurate and high-resolution mapping across the entire audible frequency range is achievable. Time-domain methods can be applied to gain detailed insights into transient phenomena such as impacts and rotational rises, or steady sound sources (for example, radiated sound at different crank angles of an engine). For large steady sound sources, automatic measurements can be conducted using a microphone positioning system (robot). For more details, please contact us or download the catalog.

• Voice Recognition Software
• Software (middle, driver, security, etc.)

BK Connect(TM) and PULSE(TM) data collection hardware 'LAN-XI' is a modular, multifunctional system that can be used in a frame as shown above. Individual modules can be used standalone or as part of a distributed system. LAN-XI is compatible with traditional IDA-e hardware and can be used with both PULSE and Test for I-deas. The modules feature a highly robust industrial design, making them ideal for field use. Additionally, they support plug-and-play functionality, allowing for easy configuration changes. LAN-XI can use AC, DC, or Power over Ethernet (PoE) as power sources, and the front panel is replaceable, providing a very flexible system. It allows for unlimited data transfer from 2 channels to over 1000 channels within a frequency range of 51.2 kHz. For more details, please contact us or download the catalog.

• Other embedded systems (software and hardware)

Bruel & Kjaer offers a full range of impedance tubes for measuring acoustic material properties such as absorption coefficient, reflection coefficient, acoustic impedance, acoustic admittance, and transmission loss. - Measurements based on the two-microphone transfer function method according to ISO 10534-2 and ASTM E1050-98 - Measurement of directional (granular) materials in horizontal installation: simulation measurements of suspended ceilings - Wall-mountable structure - Part of the Bruel & Kjaer PULSE system for acoustic material testing - Calculation of noise reduction coefficient (NRC, ASTM C423-99a) from absorption coefficients at 250, 500, 1000, and 2000 Hz (Model 4206A) For more details, please download the catalog or contact us.

• others

The "Vibration Calibration Exciter Model 4294" is equipped with a built-in electromagnetic exciter and operates at a frequency of 159.15 Hz (1000 rad s-1) using a quartz oscillator. A small acceleration pickup is mounted on the bottom surface of the vibration plane, and feedback control is employed to maintain a constant and precise vibration level, regardless of the mass of the transducer being calibrated (up to 70 grams for Model 4294 and up to 200 grams for Model 4294-002). If a transducer exceeding the specified mass is attached to the vibration table, the power supply of the calibrator will automatically be cut off to avoid overload. The usage is very simple. First, attach the target transducer to the vibration plane of the calibrator using a steel stud (YQ 2963) with a 10-32 UNF thread. Additionally, by using the included 10-gram mounting adapter (DB 2996), transducers manufactured with a mounting screw diameter of 3 mm can be easily attached, or they can be mounted with the included magnet UA 0642. This mounting adapter is also convenient for securing transducers with bead wax or instant adhesive.

• Vibration Testing
• Other inspection equipment and devices

The 4517 model and the 4517-002 model are piezoelectric shear-type acceleration pickups with side connectors. Due to their lightweight design, they are ideal for measuring precision structures and small structures. The sensor is connected to a low-noise cable via a compact 3–56UNF connector, allowing for easy attachment and detachment. The other end of the low-noise cable features a 10–32 UNF female connector. Installation is done using adhesive, and removal can be easily accomplished with the included wrench. ● For more details, please contact us or download the catalog.

• Other measurement, recording and measuring instruments

The output of the piezoelectric accelerometer pickup is in charge, and its sensitivity is expressed as the amount of charge per unit acceleration, pC/ms² (pC/g). It has a shear structure, and like the DeltaShearR design, the piezo elements undergo shear deformation. Two slices of piezoelectric materials are mounted on either side of the center post. This design offers high linearity and low base strain sensitivity, with low susceptibility to temperature changes. The material of the case for models 4517-C and 4517-C-001 is titanium, while 4517-C-003 is made of anodized aluminum. ● For more details, please contact us or download the catalog.

• Other measurement, recording and measuring instruments

The 7799 PULSE(TM) Acoustic Power is a software package that measures the acoustic power and sound energy of machines, devices, and instruments. It supports the execution of sound pressure method measurements and acoustic intensity method measurements in accordance with current international standards under various environmental conditions. The software operates PULSE with a guide displayed in the window according to the selected measurement method. Once the measurement is complete, it performs calculations and automatically saves the measurement results to a Microsoft(R) Excel file. For more details, please contact us or download the catalog.

• Acoustic Analysis
• Voice Recognition Software

The 4948 type surface microphone is a robust and stable measurement microphone designed for applications such as in-flight testing and wind tunnel testing, specifically for measuring on the surface of aircraft. By making the entire microphone housing and diaphragm-backplate structure out of titanium, it boasts excellent corrosion resistance. The 4948 type surface microphone is equipped with a built-in DeltaTron preamplifier for connection to CCLD (Constant Current Line Drive) input. ● For more details, please download the catalog or contact us.

• others

The 4524 and 4524B models are lightweight, triaxial piezoelectric OrthoShear(R) accelerometers. They have three independent signal outputs to simultaneously measure three orthogonal directions. The connectors for the 4524 and 4524B models are 4-pin. Out of the six faces of the accelerometer, five can be mounted using clips. This allows for flexible and quick installation on structures, making them suitable for structural testing and modal testing. The lightweight, compact design is based on an improved design derived from the OrthoShear patent. ● For more details, please contact us or download the catalog.

• Other measurement, recording and measuring instruments

The 4520 model is a lightweight, triaxial piezoelectric accelerometer. Excluding the Microtech-compatible 4-pin connector mounted on the side, its dimensions are approximately 9.1 mm square. It has three independent signal outputs to simultaneously measure three orthogonal directions. Due to its adhesive mounting and lightweight design, it is suitable for modal testing. The 4520 model features a sealed structure. It has a shared structure, and the piezo elements undergo shear deformation. Two slices of piezoelectric material are mounted on either side of the central post. This design offers high linearity and low base strain sensitivity, with minimal influence from temperature changes. The case material is titanium. ● For more details, please contact us or download the catalog.

• Other measurement, recording and measuring instruments

The 4949 type surface microphone is optimized for true surface sound pressure measurement, particularly for automotive applications. This microphone is suitable for direct attachment to the surface of vehicles during wind tunnel testing, or for easy measurement in confined spaces such as vehicle dash insulators or undersides. The optional mount pad can be very easily attached to the curved surfaces of automobiles. Despite its small size, the 4949 type is a robust and stable measurement microphone. By making the entire microphone housing and diaphragm-backplate structure from titanium, it offers excellent corrosion resistance. ● For more details, please download the catalog or contact us.

• others

The 4952 and 4952-A outdoor microphones are suitable for long-term unattended use outdoors. The exterior components of the 4952 and 4952-A outdoor microphones are made of a highly corrosion-resistant polymer material. Due to the use of this polymer material and the excellent long-term stability of the microphone, it can operate unattended outdoors for at least one year without significant changes in sensitivity. The frequency characteristics are controlled by linearization technology and meet the requirements of IEC 61672 Class 1. The upper windscreen and bird spike can be removed in seconds, allowing for easy acoustic calibration of the microphone. Additionally, it is lightweight, making it suitable for portable use. ● For more details, please download the catalog or contact us.

• others

Noise Source Identification (NSI) is a useful technique for optimizing the radiated sound of a wide range of products, from automobiles, home appliances, and power tools to large machinery and components such as engines, tires, gearboxes, and exhaust systems. The goal of NSI is to identify the parts of the object that contribute most significantly to the sound, in terms of location, frequency, and acoustic power. By ranking the contributions of each sound source, it is possible to determine where design changes would most effectively improve the overall radiated sound. Array-based methods allow for the acquisition of very high-quality results in a short measurement process. Additionally, by combining acoustic holography and beamforming techniques, accurate and high-resolution mapping across the entire audible frequency range is achievable. Time-domain methods can be applied to investigate transient phenomena such as shocks and rotational increases, or to gain detailed insights into steady sound sources (e.g., radiated sound at each crank angle of an engine). For large steady sound sources, automated measurements can be conducted using an automated microphone positioning system (robot). For more details, please contact us or download the catalog.

• Software (middle, driver, security, etc.)

1-inch and 1/2-inch microphones adequately cover many noise measurements based on IEC, ISO, and ANSI standards, but there is a growing demand for noise measurements at levels lower than these noise floors. In such cases, Brüel & Kjær's Type 4955 is the optimal choice. It combines a total titanium laser-welded diaphragm and a 1/2" microphone cartridge with optimized self-noise, along with a low-noise preamplifier with a gain of 20dB. As a result, this system is highly sensitive, with excellent long-term stability and outstanding corrosion resistance. The 4955 TEDS microphone has a representative noise level of 5.5dB A-weighted sound pressure level, allowing it to adequately measure up to 10dB A-weighted sound pressure levels. ● For more details, please download the catalog or contact us.

• others

The PULSE™ In-Tube Acoustic Material Testing Software is designed to measure the properties of acoustic materials used for noise reduction by absorbing or blocking airborne sound (absorption rate, transmission loss). This software is used in combination with the impedance tube basic configuration kits, including the 4206 type, 4206-A type middle tube kit, 4206-T type transmission loss tube kit, and other custom measurement tubes. For more details, please download the catalog or contact us.

• others

PULSE(TM) Electroacoustics is a general-purpose platform for evaluating electroacoustic transducers. It is equipped with many of the latest analysis features required by audio engineers engaged in research and development in acoustic design. PULSE Electroacoustics can measure various important characteristics of electroacoustic transducers, including output characteristics, frequency response, harmonic distortion, intermodulation distortion, directivity, and loudness ratings. By combining PULSE Electroacoustics with high-quality PULSE front-end hardware, it becomes an ideal audio analyzer. Furthermore, this platform can be expanded with software packages for vibration analysis, sound quality evaluation, data management, and advanced time data recording and analysis. For more details, please contact us or download the catalog.

• Acoustic Analysis
• Noise Inspection