TESTech TTech-GBT17650 Halogen Acid Gas Evolution Tester for Wires and Cables (IEC 60754-1 & -2, GB/T 17650 Compliant)
| Brand | TESTech |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Direct Manufacturer |
| Model | TTech-GBT17650 |
| Power Supply | AC 220 V, 50/60 Hz, 15 A |
| Dimensions | 1500(W) × 500(D) × 600(H) mm |
| Weight | 60 kg |
| Tube Furnace Effective Length | 500–600 mm |
| Tube Inner Diameter | 40–60 mm |
| Combustion Boat Dimensions | 45–100 × 12–30 × 5–10 mm |
| Conductivity Range | 0.01–100 µS/mm |
| Sample Chamber Volume | 1 L |
| Temperature Control | Electronic PID with Thermocouple (Imported U.S. Type K) |
| Dual Test Mode Switching | IEC 60754-1 (pH & Conductivity) / IEC 60754-2 (Acid Gas Volume) |
Overview
The TESTech TTech-GBT17650 Halogen Acid Gas Evolution Tester is a precision-engineered combustion analysis system designed to quantify the acidity of gases evolved during the controlled thermal decomposition of wire and cable insulation and sheathing materials. It operates in strict accordance with the internationally harmonized test protocols defined in IEC 60754-1 (determination of pH and conductivity of aqueous extracts) and IEC 60754-2 (quantification of halogen acid gas volume), as well as the Chinese national standard GB/T 17650. The instrument employs a calibrated horizontal tube furnace—constructed from high-purity Pyrex® glass—to thermally decompose standardized specimens under inert or oxidative atmospheres. Evolved combustion gases are swept through a precisely metered airflow into two serially connected absorption bottles containing deionized water. Subsequent analysis of the aqueous extract yields quantitative data on hydrogen halide (e.g., HCl, HBr) release via simultaneous measurement of solution pH and electrical conductivity—both critical parameters for assessing corrosivity potential in fire scenarios.
Key Features
- Fully integrated dual-mode operation: hardware and control logic support seamless switching between IEC 60754-1 (acid gas solubility assessment) and IEC 60754-2 (volumetric halogen gas quantification) without manual reconfiguration.
- Pyrex® tubular furnace assembly with 500–600 mm effective heating zone and 40–60 mm internal diameter, engineered for uniform thermal profiles and resistance to halogen-induced corrosion.
- Motor-driven combustion boat transport mechanism ensures reproducible specimen positioning and eliminates operator-induced variability in thermal exposure timing.
- Stainless steel construction throughout all wetted and structural components—including sample chamber (1 L volume), gas manifolds, and absorption bottle holders—for long-term chemical resistance and mechanical stability.
- High-accuracy temperature control system featuring imported U.S.-sourced Type K thermocouples and digital PID regulation, with over-temperature cut-off protection and real-time core-zone temperature display.
- Dual-channel analytical instrumentation: integrated benchtop pH meter and conductivity meter with digital readouts, calibrated electrodes, and auto-ranging capability (0.01–100 µS/mm).
- Comprehensive air purification train comprising activated carbon filters (for hydrocarbon and organic vapor removal) and silica gel desiccant (for moisture control), ensuring baseline purity of carrier gas.
- Permanently mounted magnetic stirrer within the first absorption bottle ensures homogeneous dissolution and rapid equilibration of acidic gases in deionized water.
- Dedicated accessory drawer with labeled compartments for storage of electrodes, calibration buffers, combustion boats, and spare tubing—supporting GLP-aligned lab organization.
Sample Compatibility & Compliance
The TTech-GBT17650 accommodates solid polymeric specimens—including PVC, LSZH (Low Smoke Zero Halogen), cross-linked polyethylene (XLPE), and fluoropolymer-based insulations—cut to standardized dimensions per IEC 60754 and GB/T 17650. Specimens are loaded into reusable stainless steel combustion boats (45–100 × 12–30 × 5–10 mm) and introduced into the Pyrex® furnace tube under controlled nitrogen or air flow. The system meets full functional compliance with IEC 60754-1 Ed. 2.0 (1994), IEC 60754-2 Ed. 1.0 (1991), and GB/T 17650.1–17650.2. All critical subsystems—including gas flow meters, temperature sensors, and analytical transducers—are traceable to national metrological standards. The design supports audit readiness for ISO/IEC 17025-accredited laboratories and aligns with quality management requirements under ISO 9001 and IATF 16949 frameworks.
Software & Data Management
While the TTech-GBT17650 operates as a stand-alone benchtop instrument with analog/digital hybrid controls, it is fully compatible with external laboratory information management systems (LIMS) via RS-232 or USB-to-serial interface. All measured values—including furnace temperature profile, gas flow rate, pH, conductivity, and test duration—are timestamped and exportable in CSV format. The built-in digital timer conforms to the fixed 20-minute (IEC 60754-1) or 10-minute (IEC 60754-2) exposure durations specified in the standards, with audible and visual end-of-test alerts. For regulated environments, optional firmware upgrade enables 21 CFR Part 11-compliant electronic signatures, audit trail logging, and user access level management—supporting GMP/GLP documentation integrity.
Applications
This tester is routinely deployed in cable manufacturing QA/QC labs, third-party certification bodies (e.g., UL, TÜV, SGS), and national metrology institutes for material qualification against fire safety regulations including EN 50575 (CPR), BS 6724, and NF C 32-070. It provides essential input for halogen-free material development, regulatory dossier compilation (e.g., CE marking technical files), and failure analysis of field-failed cables exhibiting post-fire corrosion damage. Data generated directly inform risk assessments related to toxic gas emission, equipment corrosion in confined spaces (e.g., data centers, rail tunnels), and compliance with green building standards such as LEED v4.1 MR Credit 2 (Building Product Disclosure and Optimization – Material Ingredients).
FAQ
What standards does the TTech-GBT17650 fully support?
It is validated for IEC 60754-1, IEC 60754-2, and GB/T 17650.1–17650.2, with documented uncertainty budgets for pH and conductivity measurements.
Is the furnace tube replaceable, and what is its expected service life?
Yes—the Pyrex® tube is a consumable component; typical service life exceeds 500 test cycles when operated within specified temperature limits (≤900 °C) and protected by proper air filtration.
Can the system be used for non-cable polymeric materials like gaskets or connectors?
Yes—provided specimens meet dimensional and mass criteria defined in Clause 6 of IEC 60754-1 and are physically compatible with the combustion boat geometry.
Does the instrument include calibration certificates for the pH and conductivity meters?
Factory calibration certificates are supplied with each unit; users must perform periodic in-house verification using NIST-traceable buffer solutions (pH 4.01, 7.00, 10.01) and KCl conductivity standards (1413 µS/cm).
Is remote monitoring or network connectivity available?
Standard configuration includes local digital displays only; Ethernet or Wi-Fi modules are available as configurable options for centralized lab monitoring infrastructure integration.
