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Microphones  MP205 is 1/2" prepolarized free-field measurement microphone. It is ideal to be used in IEC61672 Class 2 Sound Level Meters and other noise measurements where Class 2 accuracy is required. The design of the MP205 is based on the technology and structure of the MP201. The microphone diaphragm is made from nickel using BSWA diaphragm coating technology with housing made stainless steel. It is high quality Class 2 microphone. The temperature, pressure, and humidity coefficients are better than IEC 61672 Class 2 requirements. The microphone protection grid is redesigned to distinguish MP201 and MP205. The free-field correction and polar pattern of MP205 were measured in the anechoic chamber. Each MP205 is individually calibrated using the electrostatic actuator and piston phone. All microphones are environmentally aged for long term stability. Product Specifications in pdf. for Download:MP205 Type II -- MP206 Microphone IEC 61672 Class 2  MP205 is 1/2" prepolarized free-field measurement microphone. It is ideal to be used in IEC61672 Class 2 Sound Level Meters and other noise measurements where Class 2 accuracy is required. The MP206 has unique design features to ensure the quality. Specially designed protection grids reduce the directivity factors in high frequencies. The microphone diaphragm is made from polymer with housing made copper. The frequency response extended to 10 kHz. Due to the material selections, the MP206 is suitable for indoor and controlled environmental uses. The temperature and pressure coefficients are not complied with the Class 2. Product Specifications in pdf. for Download:MP206 Type II -- MP 408 1/4''Microphone IEC 61672 Class 2  MP 408 is a 1/4" free-field prepolarized microphone and an ideal choice for array applications. The MP408 was developed based on BSWA's Type 1 microphone technologies. Its frequency response meets IEC61672 Class 2 requirements. Each microphone is individually calibrated and aged at 80 ??C for long-term stability and reliability. Product Specifications in pdf. for Download:MP408 Top Page Preamplifers MA211 1/2'' ICP Preamplifier  The ICP Preamplifier Type MA211 is specially developed for 1/2" prepolarized microphones. It is a high-performance preamplifier with low inherent noise and high input impedance. The excellent frequency response ensures that the microphone with MA211 complies with IEC 651 Type I requirements. MA211 preamplifier can be directly connected to any ICP inputs. MA211 is used for general purposes of sound measurements. Comparing with traditional microphones preamplifiers, the advantages of the ICP type are low cost, easy to use and long cable option. The dynamic range can be achieved with MP201 from 15 dBA to 130 dBA. (The low sensitivity microphone is required for noise level exceeded 130dBA) Product Specifications in pdf. for Download:MA211&MA408 MA408 1/4'' ICP Preamplifier  The ICP Preamplifier Type MA408 is designed to be used with 1/4" prepolarized microphones. The circuit designed is copied from MA211 with special consideration for its size. The MA408 uses SMB connector for output and the thread for the microphones is complied with IEC1094-4 WSF3 standard. It can fit with standard 1/4" microphones. Product Specifications in pdf. for Download:MA211&MA408 Top Page ICP Microphones & Array Microphones MPA201/205/206 1/2'' ICP Microphone MPA201/205/206  The ICP microphones, MPA201/205/206, utilize the outstanding performance of BSWA's MA211 ICP preamplifier coupled with the high quality line of 1/2" prepolarized microphones. Using ICP microphones have many advantages over traditional 200V polarized microphones. MPA201 offers BSWA's top of the line choice and is suitable for all acoustical measurements requiring Class 1 accuracy. The MPA201 is extremely stable environmentally. It is widely used in multi-channel sound measurements including acoustic arrays due to its excellent phase-matching and sensitivity characteristics. MPA205 provides excellent value, with good environmental stability and phase-matching ability. It is the best choice where a large number of microphones require Class 2 accuracy. MPA206 is BSWA's extremely low cost solution while still delivering accurate acoustic measurements. The MPA206 is recommended for indoor uses, where temperature and humidity are relatively stable over the measurement time period. Product Specifications in pdf. for Download:MPA201/205/206 MPA416 1/4'' Array Microphone MPA416 MPA416 is a 1/4” prepolarized free-field measurement microphone. It is an ideal choice for array applications where a large number of microphones are required. MPA416 has the following main features: MPA416 consists of an electret condenser microphone cartridge and ICP preamplifier (irremovable); the latter amplifies the input signal with flat frequency response. BSWA has a strict manufacturing process to produce MPA416 microphones. Before the factory release, all the microphones are going through solid environmental testing, which includes high temperature ageing and high humidity ageing. It is stable microphone for accuracy acoustical measurements. Top Page Sound Intensity Probe SI502 Sound Intensity Probe SI502 SI502 Sound Intensity Probe is built using ICP type preamplifiers. It complies with IEC 1043 Class 2 Standard. Based on the technique of simultaneous determination of sound pressure and particle velocity by two closely spaced microphones, SI502 can be directly connected to ICP inputs to perform sound intensity measurements. SI502 has the following main features: Top Page USB Soundcard-ICP Input MC3022 MC 3022 USB Sound Card  MC3022 is a USB powered Plug-N-Play measurement soundcard with two ICP input channels and one output source channel. Based on 24 bit A/D converters with two channel simultaneous sample frequency of 44.1 kHz, it is simple, powerful, and yet very easy to use. It's the perfect start to building your own two-channel sound and vibration measurement system. Product Specifications in pdf. for Download:MC3022 Top Page ICP Power Supply MC102 Current Drive Microphone Preamplifier with Current Source - MC102  MC102 is a 2-channel ICP power supply that provides a constant 4.0 mA current to ICP microphones and other ICP sensors. The output signals from the MC102 can be connected directly to other equipment or data acquisition systems via BNC connectors. To reduce line noise and increase portability, the MC102 is battery powered and includes a built-in low battery indicator. Product Specifications in pdf. for Download:MC102&CA106 Top Page Sound Calibrator (Type II) CA106 IEC60942 Class 2 SOUND CALIBRATOR  The CA106 Sound Level Calibrator is a pocket-sized, battery operated sound source for quick and direct calibration of sound level meters and other sound measuring systems. The CA106 satisfies the IEC60942 Class 2 standard and fits all 1/2" and 1" diameter microphones. The CA106 provides a continuous sound pressure level of 94.0 dB at 1 kHz allowing the same calibration value to be used for all weightings. After one minute running, the CA106 automatically turns off conserving battery power. Product Specifications in pdf. for Download:MC102&CA106 Top Page Impedance Tube SW002 IMPEDANCE TUBE SW002  SW002 Impedance Tube can accurately measure sound absorption coefficients and material impedance values according to standards described in ISO10534-2 (1998). The SW002 is based on the Transfer Function Method, which is much faster than the commonly used Standing Wave Ratio Method. The Transfer Function Method separates the incident and reflected energy from the measured transfer function, and then estimates the acoustic properties of the test sample that is located at the end of the tube. The SW002 is specially designed to work with not only separate test samples, but also for direct use in the field. Its small size and durable aluminum construction make it easy to transport and be used for estimating the properties of walls, ceilings, installed building materials, road surfaces, different ground surfaces, interiors of vehicles, etc. The SW002 covers a broad frequency range from 125 Hz to 3200 Hz. It has two locations for1/4"microphones needed for measuring the acoustic pressures. The SW002 makes it easy to use your own microphones and acquisition software and hardware. Any1/4"microphones may be used along with any software supporting the Transfer Function Method. For a fully equipped and ready to go package, BSWA offers optional items. Product Specifications in pdf. for Download:SW002 Top Page Tapping Machine TM002 Tapping Machine TM002  TM002 Tapping Machine is a rugged, self-contained sound source for making footfall noise measurements to the latest international standards (ISO140, EN 20140, ASTM E492, GB J75-84, etc.) The main features include: Product Specifications in pdf. for Download:OS002 Top Page |
