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■ 4206A type impedance pipe kit (100Hz to 3.2kHz) The 4206a type is composed of the following: ・ Pipe with an inner diameter of 100 mm (tube) ・ Inner diameter 63.5 mm tube (medium tube) ・ Sample holder (inner diameter 63.5 mm) ・ Two extension tubes (inner diameter 63.5 mm) The 4206A type was specially designed to cover the frequency range from 100 Hz to 3.2 kHz. This allows you to compare the data measured by the ASTMC423-99A reverberation room and the data measured by this tube. The middle tube is mounted on the opening of the thick pipe (with a loud speaker) and a sample holder for the middle tube. By attaching one or two extension pipes, and changing the position of the slide piston of the sample holder, you can change the effective length in each setting. The interior of the pipe is attached to the 4206A type, and is performed at the 4187 type 1/4 inch condenser samicrophone, which is specially designed to exclude sound pressure leak errors at high frequencies. The middle tube has three couples for flash mounts inside the tube. The flash mount combines the microphone and the sound field in the jurisdiction to prevent a leak that causes a measurement error. ■ Applications The 4206 and 4206A type can be used to measure the sound characteristics of a small test sample, including composite materials (eg, ceiling tiles) and implicit materials (eg, cracked acoustic tiles). The piston back plate attaches a test sample inside the sample holder, but you can pull it out and provide an air layer behind the test sample. As a result, for example, you can simulate the hanging ceiling. In addition, the 4206 type can be placed vertically to measure the directional sample (eg, granular materials) that must be horizontally.
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Assembly setup TL tube length
Assembly setup length
Assembly setup overall height
Frequency range
Inner diameter of extension pipe/maximum sample length (mm) (in)
Measured pipe inner diameter/maximum sample length (mm) (in)
Overall width of the assembly setup
Sample holder inner diameter/maximum sample length (mm) (in)
TL sample holder inner diameter/maximum sample length (mm) (in)
TL tube inner diameter/maximum sample length (mm) (in)
Zero sound absorption (calculated with 1/3 octava band)
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4206AHandling Company
Hottinger Brüel & KjærCategories
| Image | Price (excluding tax) | Assembly setup length | Assembly setup overall height | Frequency range | Measured pipe inner diameter/maximum sample length (mm) (in) | Overall width of the assembly setup | Sample holder inner diameter/maximum sample length (mm) (in) | Zero sound absorption (calculated with 1/3 octava band) |
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Available upon quote | Taipei: 700 mm (27.7 ″), Central tube: 910 mm (36 ") | 240 mm (9.5 ") | Taipei: 50 Hz ~ 1.6 kHz, Central tube: 100 Hz ~ 3.2 kHz | Taipei: 100 (3.9) /440 (17.4), Central tube: 63.5 (2.5) /200 (7.9) | 140 mm (5.5 ") | Large: 100 (3.9) /200 (7.9), medium size: 63.5 (2.5) /200 (7.9) | 50 Hz ~ 4 kHz: <4%, 5 kHz ~ 6.3 kHz: <10% |
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