Impedance Tube Testing Systems
ระบบทดสอบท่อค่าอิมพีแดนซ์ มาตรฐาน ISO 10534-2 และ ASTM E2611
Professional acoustic material characterization using the two-microphone transfer function method. Complete turnkey solutions with local support and calibration services in Thailand.
Standards & Applications
มาตรฐานและการประยุกต์ใช้งาน
Compliance Standards
ISO 10534-2:1998
Acoustics - Determination of sound absorption coefficient and impedance using standing wave tubes - Part 2: Transfer-function method
ASTM E2611-19
Standard Test Method for Normal Incidence Determination of Porous Material Acoustical Properties Based on the Transfer Matrix Method
ISO 10534-1:1996
Standing wave ratio method (reference for historical comparisons)
Key Applications
Acoustic Material R&D
Development and characterization of sound absorbers, porous materials, perforated panels
Quality Control Testing
Production verification, batch testing, material consistency checks
Building Material Certification
Third-party testing labs, acoustic product certification, performance validation
Why Choose ISO 10534-2 Method?
เหตุผลในการเลือกวิธี ISO 10534-2
Fast & Accurate
Digital signal processing enables rapid measurements with excellent repeatability and low uncertainty (typically ±0.02 for absorption coefficient)
Broad Frequency Range
Dual-tube systems cover 50 Hz to 6400 Hz, capturing full acoustic performance of materials from low to high frequencies
Internationally Recognized
Harmonized ISO/ASTM standards ensure global acceptance of test results for certification and research publications
Impedance Tube Solutions
Complete systems including tubes, microphones, software, and calibration
NOR1527
Norsonic Nor1527 Impedance Tube, 50-6400 Hz
The Norsonic Nor1527 impedance tube measures acoustic impedance, sound absorption coefficient and sound transmission loss from 50 Hz to 6400 Hz under room temperature and pressure. Two tubes are supplied: 100 mm for the 50-1600 Hz range and 30 mm for the 200-6400 Hz range. The system complies with ISO 10534-2 (transfer function method), ASTM E1050 and ASTM E2611 (four-pole transfer matrix method). It includes a 102.4 kS/s analyser with 100 dB dynamic range, GRAS measurement microphones (10 Hz to 20 kHz, 33-142 dB), a built-in 20 W power amplifier and a full-range 4 ohm loudspeaker. The software supports Johnson-Champoux-Allard-Lafarge material modelling, random-incidence absorption estimation, removal of tube attenuation, and export of poro-elastic material definitions to MSC Actran. The Nor1256 sound calibrator is available as an option. Placid Asia is the authorized Norsonic distributor for Thailand and ASEAN.
IMPEDANCE-TUBE
Impedance Tube (Kundt's Tube) ISO 10534-2
Impedance tube systems, also called Kundt's tubes, measure the normal-incidence sound absorption coefficient and the transmission loss of acoustic materials to ISO 10534-2 and ASTM E1050. Placid Asia supplies the PLACID Instruments tube set: PI8810, 100 mm, 50-1600 Hz; PI8803, 30 mm, 800-6400 Hz; and PI88016, 16 mm, 2500-10000 Hz, each with 1/4-inch measurement microphones, loudspeaker, signal generator, amplifier and a 4-channel DAQ. Laboratories that also need the four-pole transfer matrix method to ASTM E2611 can use the Norsonic Nor1527. Authorized distributor for Thailand and ASEAN.
Ready to Get Started?
Contact our acoustic testing specialists for expert consultation on impedance tube systems. We provide complete turnkey solutions with installation, training, and local calibration support in Thailand.