YT9402 Flame Resistance Tester for Eyewear Frames
| Origin | Taiwan |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Regional Classification | China-sourced |
| Model | YT9402 |
| Pricing | Available Upon Request |
Overview
The YT9402 Flame Resistance Tester is a precision-engineered benchtop instrument designed specifically for evaluating the flammability performance of eyewear frame materials in accordance with internationally recognized safety standards. It operates on the principle of controlled flame exposure—applying a standardized Bunsen burner flame (with defined gas flow rate, flame height, and contact duration) to a vertically mounted specimen under regulated ambient conditions. The device measures critical response parameters including after-flame time, after-glow time, and whether flaming or glowing combustion propagates beyond a specified reference mark. This methodology aligns directly with the fundamental test logic of ISO/FDIS 12870 (Ophthalmic optics — Spectacle frames — Requirements and test methods) and GB/T 14214–2003 (Eyeglass Frames — Technical Requirements and Test Methods), both of which mandate strict pass/fail criteria for frame ignition resistance to prevent fire hazard during incidental thermal exposure (e.g., proximity to candles, lighters, or electrical sources).
Key Features
- Calibrated propane or butane gas delivery system with integrated pressure regulator and needle valve for precise flame height control (typically 25 mm ± 2 mm as required by ISO/FDIS 12870)
- Vertically adjustable specimen holder with locking mechanism ensuring consistent 45° tilt angle and repeatable positioning relative to flame axis
- Digital timer with millisecond resolution for accurate measurement of after-flame and after-glow durations
- Integrated flame shield and draft-free test chamber (optional enclosure available) to minimize environmental interference and ensure test reproducibility
- Compliance-ready design featuring traceable calibration documentation and user-accessible verification procedures per ISO/IEC 17025 guidelines
- Ergonomic front-panel layout with tactile controls and LED status indicators for unambiguous operational feedback
Sample Compatibility & Compliance
The YT9402 accommodates standard eyewear frame specimens—including acetate, nylon, TR-90, stainless steel, titanium, and composite laminates—with specimen lengths up to 120 mm and cross-sections compatible with ISO-defined clamping fixtures. Each test cycle uses a new, unused segment of material to eliminate thermal history effects. The instrument satisfies the physical configuration, procedural sequence, and reporting requirements of ISO/FDIS 12870:2023 Clause 6.3 (Flame Resistance) and GB/T 14214–2003 Section 5.6. It supports full audit readiness for quality management systems operating under ISO 9001, ISO 13485 (for medical-grade frames), and regulatory submissions requiring documented conformance to national and international optical product safety mandates.
Software & Data Management
While the base YT9402 operates as a standalone hardware platform, optional PC-based software (YT-DataLink v2.1) enables automated test logging, timestamped event capture, and configurable report generation in PDF and CSV formats. All data entries include operator ID, calibration certificate number, ambient temperature/humidity metadata, and pass/fail flagging per test criterion. The software complies with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available) and supports electronic signature functionality aligned with FDA 21 CFR Part 11 requirements when deployed in regulated manufacturing environments. Audit trails are immutable and exportable for internal QA review or third-party certification body inspection.
Applications
- Final product validation of ophthalmic frames prior to market release in EU, North America, and APAC regions
- Routine incoming inspection of raw polymer pellets and extruded frame stock at Tier-1 component suppliers
- Material development support for R&D labs optimizing flame-retardant additives in thermoplastic elastomers
- Contract testing services offered by accredited laboratories seeking CNAS, UKAS, or A2LA recognition for spectacle frame safety testing
- Root cause analysis of field-reported ignition incidents through comparative testing of failed vs. compliant batches
FAQ
What flame fuel is recommended for ISO/FDIS 12870 compliance?
Propane is specified in ISO/FDIS 12870 Annex B; butane may be used only if validated equivalency is demonstrated and documented.
Does the YT9402 require annual recalibration?
Yes—calibration of flame height, gas pressure, and timer accuracy must be performed annually or after any mechanical maintenance affecting measurement integrity, per ISO/IEC 17025 Clause 6.5.
Can the instrument test temples (earpieces) separately from front frames?
Yes—specimens are tested individually per ISO/FDIS 12870 Section 6.3.2; both front and temple segments must meet pass criteria independently.
Is draft compensation built into the standard configuration?
The base unit includes a removable acrylic draft shield; for GLP-compliant labs, an optional ventilated test hood with laminar airflow control is available.
How is compliance with GB/T 14214–2003 verified during installation qualification?
IQ protocol includes verification of flame geometry, specimen tilt angle, and timing accuracy using NIST-traceable tools and reference standards supplied with the system.
