F100/F50 Square Impedance Tube System – Reshaping Efficiency in Acoustic Material Testing
2026-05-12Key Specifications at a Glance - 4 Performance Metrics
| Specification | Value |
|---|---|
| Frequency Coverage (Combined) | 45 Hz – 3.45 kHz |
| Efficiency Improvement | >50% vs. standing wave method |
| Sample Installation Time | 30 seconds (tool-free) |
| Sealing Performance | 40% improvement (12-process structure) |
Product Overview - ISO/ASTM/GB Compliant Square Impedance Tubes
The BSWA F100/F50 Square Impedance Tube System is a high-efficiency acoustic material testing platform that measures normal incident sound absorption coefficient, specific acoustic impedance, and transmission loss in full compliance with ISO 10534-2, ASTM E1050, and GB/T 18696.2 standards[1]. Using the dual/quad-microphone transfer function method, the F-Series replaces the traditional standing wave ratio method, improving testing efficiency by more than 50% while delivering higher data stability and repeatability.
The system employs a dual-model design with 102 mm and 50 mm square cross-sections to achieve broad frequency coverage from 45 Hz to 3.45 kHz. Featuring a separable sample tube for tool-free 30-second installation, upgraded 12-process sealing structure, and lightweight aluminum construction, the F-Series provides a portable yet laboratory-grade solution for material R&D, simulation validation, and quality control in automotive, construction, and aerospace acoustics[2].
Key Advantages - 4 Core Strengths
Transfer Function Method: Standard-Compliant Core Principle
The F-Series uses the dual/quad-microphone transfer function method to replace the traditional standing wave ratio method, achieving over 50% improvement in testing efficiency with higher data stability[1]. This method complies with GB/T 18696.2, ISO 10534-2, and ASTM E1050 for absorption and transmission loss testing, ensuring measurement results are internationally recognized and directly comparable across laboratories.
Wide Frequency Coverage: 45 Hz – 3.45 kHz (Dual-Model)
Two complementary square cross-sections cover low and high frequencies seamlessly: the F100 (102 mm) extends down to 45 Hz for low-frequency absorption testing, while the F50 (50 mm) reaches up to 3.45 kHz for high-frequency insulation testing[2]. Combined use supports comprehensive testing of automotive interior materials, building acoustic materials, and aerospace sound insulation products across the full frequency range relevant to regulatory requirements.
Separable Design: Tool-Free 30-Second Installation
The separable sample tube design enables tool-free sample installation completed in just 30 seconds, dramatically reducing setup time between measurements[2]. One-test full-frequency data acquisition eliminates repeated adjustment, providing full-range parameters in a single run. This streamlined workflow is critical for production environments requiring rapid batch testing and high throughput.
Upgraded Sealing & Lightweight Construction
The 12-process improved sealing structure delivers 40% better sound insulation performance, achieving zero leakage error for reliable calibration-grade measurements[2]. Lightweight aluminum construction keeps the F100 at just 5.8 kg and the F50 at 3.2 kg, making both units portable for field use while maintaining the structural rigidity required for laboratory-grade accuracy.
Model Comparison - F100 vs. F50
The dual-model configuration allows users to select the optimal cross-section based on the target frequency range and material application[1]. The following comparison details the specifications and typical applications for each model.
| Model | Cross-Section | Frequency Range | Weight | Typical Application |
|---|---|---|---|---|
| F100 | 102 mm | 45 Hz – 1.6 kHz | 5.8 kg | Low-frequency absorption testing |
| F50 | 50 mm | 800 Hz – 3.45 kHz | 3.2 kg | High-frequency insulation testing |
F-Series vs. Traditional Standing Wave Method - 5 Criteria Compared
The transfer function method used by the F-Series offers fundamental advantages over the traditional standing wave ratio method in efficiency, accuracy, and workflow automation[1]. The following comparison illustrates why modern laboratories and quality control environments favor impedance tube systems.
| Comparison Item | F-Series (Transfer Function) | Traditional Standing Wave Method |
|---|---|---|
| Testing Efficiency | Over 50% faster | Slow, manual probe traversal required |
| Sample Installation | Tool-free, 30 seconds | Complex setup, multiple adjustments |
| Sealing Performance | 12-process structure, zero leakage | Basic sealing, prone to leakage error |
| Standard Compliance | ISO 10534-2, ASTM E1050, GB/T 18696.2 | ISO 10534-1 only (legacy) |
| Portability | Lightweight aluminum (3.2–5.8 kg) | Heavy, fixed laboratory installation |
Core Applications - 4 Professional Scenarios
1. Acoustic Material Performance Testing
For acoustic foam, composites, panels, and sound insulation cotton development, the F-Series provides precise absorption coefficient and transmission loss data to guide material formulation and structural optimization[2]. Researchers can rapidly iterate on material designs with immediate, standards-compliant feedback on acoustic performance changes.
2. Simulation Input for FEA Platforms
The F-Series generates reliable empirical data to validate acoustic simulation models built in COMSOL, ANSYS, and other finite element platforms[2]. Measured impedance and absorption data serve as boundary condition inputs and verification benchmarks, ensuring simulation accuracy matches real-world material behavior.
3. Automotive NVH, Building Acoustics & Aerospace R&D
The dual-model frequency coverage addresses noise, vibration, and harshness testing in automotive engineering, sound insulation verification in building acoustics, and high-performance material characterization in aerospace R&D[2]. Compliance with international standards ensures results are accepted across all three industries for formal certification and regulatory purposes.
4. Production Line Quality Control
For production environments requiring rapid batch testing and screening, the F-Series enables efficient throughput with tool-free 30-second sample changes and one-click measurement[2]. Manufacturers can verify incoming material batches meet acoustic specifications before integration into final products, reducing reject rates and ensuring consistent output quality.
Supporting Software: MCR-IMP
The dedicated MCR-IMP software provides complete workflow support with two specialized modules fully compatible with F100/F50 systems[2]. MCR-IMPS handles sound absorption coefficient testing while MCR-IMPT manages transmission loss testing. Features include one-click transfer function measurement, real-time signal quality monitoring, and automatic standard report generation, eliminating manual calculation errors and reducing operator training requirements.
User Core Benefits - 3 Pillars
Accurate & Standards-Compliant
Full compliance with ISO 10534-2, ASTM E1050, and GB/T 18696.2 ensures measurement results are internationally recognized, directly comparable, and suitable for formal reporting and certification[1]. The 12-process sealing structure with zero leakage error guarantees reliable, traceable data across all testing conditions.
Efficient & Portable
Over 50% efficiency improvement compared with traditional methods, combined with tool-free 30-second sample installation, means faster project turnaround and higher laboratory throughput. Lightweight aluminum construction (3.2–5.8 kg) enables portable field measurements without sacrificing measurement accuracy.
Versatile & Expandable
The dual-model design covers 45 Hz to 3.45 kHz, addressing automotive NVH, building acoustics, aerospace R&D, and production quality control in a single system. MCR-IMP software and modular architecture allow easy integration into existing laboratory infrastructure.
FAQ
What standards does the F-Series comply with? The F-Series fully complies with GB/T 18696.2, ISO 10534-2, and ASTM E1050, covering both sound absorption coefficient and transmission loss measurement with internationally recognized transfer function methodology.
How much efficiency is improved over traditional methods? Over 50% compared with the traditional standing wave ratio method. The dual/quad-microphone transfer function method eliminates manual probe traversal and enables one-click automated measurement with immediate full-frequency results.
How fast is sample installation? The separable sample tube design enables tool-free installation completed in just 30 seconds. No special tools or complex alignment procedures are required, making it ideal for rapid batch testing in production environments.
What parameters are measured? The F-Series measures normal incident sound absorption coefficient, specific acoustic impedance, and transmission loss, providing complete characterization of acoustic material performance in accordance with international standards.
Is the F-Series portable? Yes. Lightweight aluminum construction keeps the F100 at 5.8 kg and the F50 at 3.2 kg, making both units suitable for field testing while maintaining laboratory-grade measurement accuracy.
What is the frequency range of each model? The F100 (102 mm cross-section) covers 45 Hz to 1.6 kHz for low-frequency absorption testing. The F50 (50 mm cross-section) covers 800 Hz to 3.45 kHz for high-frequency insulation testing. Combined use provides broad-band coverage.
References
[1] International Organization for Standardization, "ISO 10534-2 -- Acoustics -- Determination of sound absorption coefficient and impedance in impedance tubes -- Part 2: Transfer-function method." https://www.iso.org/standard/22851.html
[2] BSWA Technology, "F100/F50 Square Impedance Tube System." Product page. https://www.bswa-tech.com
[3] ASTM International, "ASTM E1050 -- Standard Test Method for Impedance and Absorption of Acoustical Materials Using a Tube." https://www.astm.org/e1050-19.html
