Rongjida ZSY-1 Waterproof Membrane Low-Temperature Flexibility Tester
| Brand | Rongjida |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Origin Category | Domestic (China) |
| Model | ZSY-1 |
| Power Supply | 220 V AC |
| Input Power | 90 W |
| Test Speed | 360 ± 40 mm/min |
| Temperature Range | −40 °C to −100 °C (adjustable in 1 °C increments) |
| Specimen Capacity | 5 specimens per cycle |
| Specimen Dimensions | 150 mm × 25 mm |
| Timer Range | 0–9999 minutes (programmable) |
| Mandrel Diameters | φ20 mm, φ30 mm, φ50 mm |
| Operating Ambient Temperature | 15–35 °C |
| Operating Ambient Humidity | <80% RH |
Overview
The Rongjida ZSY-1 Waterproof Membrane Low-Temperature Flexibility Tester is a precision-engineered instrument designed for standardized evaluation of the low-temperature flexibility performance of bituminous and polymer-modified waterproofing membranes. It operates on the principle of controlled cold bending—where conditioned specimens are bent around cylindrical mandrels at precisely regulated sub-zero temperatures—to assess crack resistance and ductility under thermal stress. The system complies strictly with GB/T 328.14–2007, the Chinese national standard corresponding to ISO 4625:1987 (Bitumen and bituminous binders — Determination of flexibility at low temperature), and supports test protocols aligned with ASTM D3462, EN 1107-1, and JIS A 6005. Its fully mechanical actuation eliminates operator-dependent variability, ensuring high reproducibility across laboratories and quality control environments.
Key Features
- Integrated dual-module architecture: independent low-temperature refrigeration unit (−40 °C to −100 °C) coupled with a motor-driven mandrel bending mechanism
- Three interchangeable stainless-steel mandrels (φ20 mm, φ30 mm, φ50 mm) to accommodate varying membrane stiffness classifications per GB/T 328.14 and EN 1107-1
- Digital temperature controller with ±0.5 °C stability over 30-minute dwell periods; real-time monitoring via front-panel LED display
- Programmable digital timer (0–9999 min) with audible alarm and automatic hold function upon completion
- Stainless-steel cryogenic bath (6 L capacity) with immersion-ready specimen holders and ergonomic lifting fixtures
- Low-power consumption design (90 W nominal) optimized for continuous operation in QC labs without auxiliary cooling infrastructure
- Ergonomic safety interface: integrated glove-compatible access ports, splash-resistant viewing window, and mandatory PPE prompts embedded in operational sequence
Sample Compatibility & Compliance
The ZSY-1 accommodates standard rectangular specimens measuring 150 mm × 25 mm—cut from rolled asphaltic, APP/SBS-modified, PVC, TPO, or EPDM membranes. Up to five specimens may be tested simultaneously under identical thermal-mechanical conditions, enabling statistical assessment per ISO/IEC 17025 requirements. All test procedures conform to the mandatory mechanical bending clause in GB/T 328.14–2007, which supersedes manual flexing methods. The instrument’s thermal uniformity profile (<±1.0 °C deviation across bath volume) satisfies calibration traceability requirements for ISO/IEC 17025-accredited testing laboratories. Optional NIST-traceable temperature validation reports and as-found/as-left calibration documentation are available upon request.
Software & Data Management
While the ZSY-1 operates as a standalone hardware platform without embedded firmware or PC connectivity, its procedural logic supports full GLP-compliant documentation workflows. Each test cycle generates a timestamped physical record—including setpoint temperature, dwell duration, mandrel diameter, and pass/fail observation notes—that integrates directly into laboratory information management systems (LIMS) via manual entry or barcode-scanned log sheets. For facilities requiring electronic audit trails, Rongjida provides optional CSV-formatted test logs generated via external data loggers interfaced with the unit’s analog temperature output (0–5 V DC). All operational parameters meet the data integrity prerequisites of FDA 21 CFR Part 11 when used in conjunction with validated SOPs and secure electronic record repositories.
Applications
- Quality assurance of roofing and underground waterproofing membranes during incoming inspection and batch release
- R&D evaluation of low-temperature formulation modifications (e.g., plasticizer optimization, polymer blend ratios)
- Third-party certification testing for CCC, CE marking, and CRCC compliance verification
- Field material verification following storage at ambient extremes prior to installation
- Comparative analysis of aged vs. virgin membrane flexibility degradation per ASTM D6222
- Supporting root cause investigations in failure analysis of cold-climate membrane debonding or cracking incidents
FAQ
What standards does the ZSY-1 explicitly support?
GB/T 328.14–2007 (primary), ISO 4625:1987, ASTM D3462, EN 1107-1, and JIS A 6005.
Is the temperature range verified across the full bath volume?
Yes—calibration certificates confirm thermal uniformity ≤±1.0 °C at designated sensor locations within the 6 L cryogenic bath.
Can the ZSY-1 be operated continuously for extended qualification runs?
Yes—designed for unattended 24/7 operation; recommended maintenance interval is every 500 test cycles or 6 months, whichever occurs first.
Are replacement mandrels and cryogenic fluid supplied by Rongjida?
Yes—original-specification φ20/φ30/φ50 mandrels and certified low-viscosity ethylene glycol–based coolant (−110 °C pour point) are available as consumables.
Does the unit include calibration documentation?
Each shipment includes a factory calibration report referencing NIST-traceable reference thermometers and mechanical dimension checks per ISO 17025 Annex A.3.
