EN 50305 Toxicity Index (CIT) Tester

Product Introduce

Introducing our state-of-the-art CIT Toxicity Testing Instrument, designed to meet the stringent requirements of EN 50305:2020 for railway vehicle cables. This advanced system accurately measures the toxicity index (CIT) of cable insulation and sheath materials under thermal decomposition and combustion conditions. Equipped with a precision horizontal tube furnace and a high-sensitivity FTIR analyzer, it quantifies critical toxic gases such as CO, CO₂, HCN, and halogens at 800°C, ensuring compliance with no-halogen standards. Ideal for testing EN 50264, EN 50306, and EN 50382 series cables, our instrument guarantees reliable, repeatable results for enhanced safety in railway applications. Elevate your testing capabilities with unparalleled accuracy and efficiency.

Standard

1 Complies with Appendix C "Toxicity Index Test Method" of GB/T19666-2019 "General Rules for Flame Retardant and Fire Resistant Wires, Cables or Optical Cables".
2 Complies with EN 50305:2020 "Railway Facilities. Test Methods for Railway Locomotive Cables with Special Flame Resistant Properties";

Test product scope

Covering halogen-free railway vehicle cables and their insulation/sheath materials in the EN 50264, EN 50306, and EN 50382 series.
The testing content includes toxic gas emissions, CIT value calculation, halogen-free characteristic verification, and other fire performance tests.
Suitable for cable applications in the railway industry that require high safety and low toxicity requirements.

Prameter

1 Tube furnace: This furnace has the characteristics of balanced temperature field, low surface temperature and fast temperature rise and fall rate;

1.1 Effective length and diameter of heating chamber 600×ф42mm;

1.2 Tube furnace: operating temperature (800±10)°C; test time 40min.

1.3 P.I.D temperature control system is adopted;

1.4 Electric heating system is adopted. Heating power: 220V/10KW;

1.5 Needle valve is used to adjust flow rate: flow rate is 0.33m/s;

1.6 Air source is air compressor, 160L/h;

2 Combustion tube:

2.1 Material: refractory tube made of silicon dioxide, resistant to corrosive gas.

2.2 Specifications: inner diameter 40mm, the length extending from the inlet side of the tubular furnace is 60~200mm, and the length extending from the outlet side is 60~100mm, leaving a gap for thermal expansion.

3 Combustion boat:

1 Material: fused quartz tube.

2 Specifications: 100mm long, 25mm wide, 10mm deep.

3 Combustion boat delivery method: bar magnet and platinum wire pulling method.

4Gas collection: 3 selection bottles and 2 air bags.

5 Gas supply system:

5.1 Air flow meter: 16L~160L adjustable

5.2 Compressor (provided by your company)

6 Sampling part:

6.1 Bubbling device, quartz wool, cooling pump, filter, etc.;

6.2 Sampling: 500mg~1000mg, equipped with analytical balance with an accuracy of 1mg;