A lightweight, compact, and robust absorption measurement system, intended for research and quality control of road surface through absorption, reflection, and impedance measurements.
TYPE 9740
Type 9740 is a state-of-the-art normal incidence absorption measurement system for non-destructive, in situ quality assurance measurements of the acoustic properties of ISO 10844 regulated test track asphalt according to the ISO 13472-2 test procedure.
Affixed directly to the surface of an ISO 10844 regulated test track, Type 9740 is used to measure the absorption coefficient of the asphalt without drilling a core sample according to ISO 13472-2. The system is based on a two-microphone, transfer-function test method, where the test system makes simultaneous measurements at all frequencies of interest while taking only a fraction of the time required by traditional, standing-wave ratio systems.
The system has all the benefits of the PULSE platform, including advanced features for calibration, measurement, display and reporting, and a task-oriented user-interface. It also contains all the functionality of the standard material testing software, which is a complete and fully integrated system for making acoustic measurements in the frequency range 220 Hz to 1.8 kHz with narrow-band analysis, and 250 Hz to 1.6 kHz with 1/3-octave band analysis.
This system comprises:
Product Information - Road Surface Absorption Measurement System Type 9740 | Data Sheets | English |
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, MicroStrain and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.