Automated testing ensures there are no user related variables.
The sample is inserted into the slot, and the lever is pulled forward.
This clamps the sample and begins the testing automatically. The
method of measurement is based on two, long-life approved speakers.
The speaker in the lower enclosure generates an oscillating air-column
which displaces air through the test sample. A second speaker in the
upper enclosure works as a sensor and measures the amount of air that
passes through the clamped sample. The measurement is completed in
about 3 seconds, and results are shown immediately on the integrated
digital display. An RS-232 interface is able to send the test data
directly to a PC.

AKUSTRON software is included and automatically displays the test
data into an already opened spreadsheet. The data can also be
downloaded directly to a company’s existing quality control program.

Technical specifications

• Measurement range, Air permeability between :
  – 4 to 400 cfm (cb.ft/sq.ft min) at rp = 0.5 inch
  – H2O = 127 Pascal
  – 3 to 3000 l/m2 s at rp = 200 Pascal
  – 3 to 3000 mm/s at rp = 200 Pascal
• Power requirements:
  220 V, 50 Hz
• Power usage:
  30 V/A
• Dimensions:
  16 x 27 x 20 cm (W x L x H)
• Net Weight:
  5 kg
• Sample dimensions:
  – Size: 5 x 12 cm minimum
  – Thickness: 3 mm maximum

Standards

• DIN 53887
• DIN 53120
• ISO 9237