SUNS DV-FTM Series Waterproof & Breathable Membrane Comprehensive Tester
| Brand | SUNS |
|---|---|
| Origin | Shenzhen, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | DV-FTM Series |
| Pricing | Available Upon Request |
| Flow Rate Ranges | 0.1–100 mL/min |
| Pressure Ranges | 3–100 kPa |
| Pressure Resolution | 1 Pa |
| Flow Resolution | 0.1 mL/min |
| Pressure Accuracy | ±0.2% FS |
| Test Units | kPa, mL/min |
| Channel Configuration | Single-channel base unit (multi-channel expansion supported) |
| Data Export | USB storage interface |
| Communication Interfaces | RS232 / RS485 (selectable), RJ45 Ethernet |
| Analog Input | 24-bit ADC |
| Display | 7-inch capacitive LCD touchscreen |
| Power Supply | AC 110–240 V, 50/60 Hz |
| Pressure Source Requirement | Clean, dry compressed air at 0.4–0.8 MPa |
| Operating Environment | 5–45 °C, ≤80% RH (non-condensing) |
| Net Weight | 19.8–20.0 kg |
| Dimensions (W×D×H) | 550 × 450 × 640 mm |
Overview
The SUNS DV-FTM Series Waterproof & Breathable Membrane Comprehensive Tester is an engineered platform designed for the quantitative evaluation of functional barrier properties in microporous polymer membranes, laminates, and coated textiles used in medical packaging, protective apparel, outdoor gear, and filtration applications. It operates on the principle of controlled differential pressure-driven gas permeation, enabling simultaneous or sequential measurement of hydrostatic resistance (water intrusion pressure) and air permeability (volumetric flow rate under defined pressure differentials). The system adheres to core physical test paradigms outlined in ISO 811 (determination of resistance to water penetration), ISO 9237 (air permeability of fabrics), ASTM F1670/F1671 (synthetic blood and viral penetration resistance), and GB/T 32610 (daily protective masks). Its modular architecture supports both single-point validation and high-throughput batch testing across diverse material formats — from flat sheet specimens to pre-cut gaskets and seam-sealed assemblies.
Key Features
- Multi-range, high-dynamic-flow pneumatic measurement module with eight selectable flow spans (0.1–50,000 mL/min), ensuring optimal resolution across low-permeability surgical barriers and high-flow architectural membranes.
- Triple-pressure-range capability (3–100 kPa, 3–200 kPa, 5–500 kPa) with 1 Pa pressure resolution and ±0.2% full-scale accuracy, calibrated traceably to NIST-traceable standards.
- Integrated clean-dry air supply interface (0.4–0.8 MPa input) with internal pressure regulation, eliminating dependency on external compressors with oil or moisture contamination risk.
- 7-inch industrial-grade capacitive touchscreen HMI with intuitive, icon-driven workflow navigation — supporting multi-language UI (English, Chinese, Spanish) and real-time graphing of pressure vs. flow curves.
- Modular channel design: base configuration is single-channel; optional hardware expansion enables up to four independent test stations synchronized via master controller for parallel throughput.
- 24-bit analog-to-digital conversion ensures high-fidelity signal acquisition from pressure transducers and mass flow sensors, minimizing quantization error during low-flow regime measurements.
Sample Compatibility & Compliance
The DV-FTM accommodates standard circular test specimens (diameter 100 mm per ISO 9237; optional 38 mm fixtures available) and custom clamping fixtures for irregular geometries including seams, zippers, and welded edges. Specimen mounting complies with ISO 22867 (test specimen preparation for breathable films) and ASTM D737 (air permeability of textile fabrics). All pressure and flow calibrations are performed using certified reference standards traceable to national metrology institutes. The system supports audit-ready documentation required under GLP environments and aligns with data integrity expectations of FDA 21 CFR Part 11 when paired with SUNS’ optional compliant software package (DV-FTM-GLP v3.2), which includes electronic signatures, user role-based access control, and immutable audit trails.
Software & Data Management
Built-in firmware enables local data storage on USB flash drives in CSV and PDF report formats, including raw time-series datasets, statistical summaries (mean, SD, CV%), and pass/fail status against user-defined specification limits. Optional PC-based software (DV-FTM Control Suite) provides advanced analysis tools: comparative overlay of multiple test curves, regression modeling of pressure–flow relationships, automated compliance flagging per ISO/ASTM thresholds, and direct export to LIMS via ODBC or HL7 interfaces. All communication protocols — RS232, RS485, and TCP/IP over RJ45 — support integration into centralized lab automation networks and MES platforms.
Applications
- Quality control of ePTFE, PU-coated, and electrospun nanofiber membranes for surgical gowns and drapes.
- Development validation of waterproof-breathable laminates in outdoor apparel (e.g., Gore-Tex®, Sympatex®).
- Regulatory submission testing for N95 respirators and KN95 face masks per GB 2626–2019 and EN 149:2001+A1:2009.
- In-process monitoring of membrane lamination uniformity and defect detection via flow variance mapping.
- Accelerated aging studies correlating hydrostatic head retention with thermal/humidity exposure cycles.
FAQ
What standards does the DV-FTM Series support out-of-the-box?
Preconfigured test methods include ISO 811, ISO 9237, ASTM F1670, ASTM F1671, GB/T 32610, and GB/T 20944. Custom method templates can be imported via XML schema.
Can the system perform simultaneous water intrusion and air permeability tests?
No — the DV-FTM executes these as discrete, sequentially triggered procedures due to fundamental differences in fluid-phase physics and sensor calibration domains. However, automated test sequencing minimizes operator intervention between modes.
Is external calibration certification included with purchase?
A factory calibration certificate (traceable to CNAS-accredited labs) is supplied. On-site recalibration services and ISO/IEC 17025-compliant certificates are available upon request.
What maintenance is required for long-term stability?
Quarterly verification of pressure transducer zero drift and annual full-system calibration are recommended. Filter elements in the air supply line should be replaced every 6 months under continuous operation.
