UL94 Horizontal Vertical Flame Chamber

The Horizontal and Vertical Flammability Tester is a laboratory instrument specifically designed to evaluate the burning performance of plastics and non-metallic materials under a 50 W flame condition.

By simulating the burning behavior of materials in horizontal or vertical flame orientations, the tester assesses their flammability characteristics.

It is suitable for flammability testing of various plastics, rubber materials, electronic components, and electrical equipment, and is widely used by research institutes, manufacturers, and quality inspection organizations.

Application

The tester is suitable for flammability performance testing in the following fields:

Plastic Materials:Including plastic products, plastic packaging, and plastic films.

Rubber Materials:Such as rubber products, rubber coatings, and rubber laminates.

Electronic and Electrical Components:Including cables, wires, and electronic components.

Automotive and Transportation Materials:Such as automotive interior materials, seat materials, lamp covers, and exterior automotive coatings.

Building Materials:Including wall decoration materials and thermal insulation materials.

Non-metallic Materials:Such as artificial leather, textiles, and wooden materials.

Home Appliances and Office Equipment:Including electrical enclosures, furniture, and household products.

Standard

ANSI/UL 94: Standard for Safety of Flammability of Plastic Materials for Parts in Devices and Appliances

GJB 360B-2009: Test Methods for Electronic and Electrical Components (Military Standard)

GB/T 5169.16-2008: Fire Hazard Testing – Part 16: Correlation of Thermal and Mechanical Surface Flammability

IEC 60950-1: Safety of Information Technology Equipment

ISO 13943: Fire Safety – Vocabulary (Referenced for Flammability Testing)

Advantages

Dual-Mode Testing: Supports horizontal/vertical combustion analysis (0°, 20°, 45° angles).

Full Automation: PLC + touchscreen control for ignition, timing, data logging, and burner retraction.

Precision Control: Adjustable flame height (20–130 mm), temperature (100–1000°C), and gas flow (0–1000 ml/min).

Safety Compliance: Auto-gas shutoff, silent exhaust system, and optional gas alarm reduce operational risks.

Data-Driven: Auto-calculates linear combustion rate (V) and stores results for regulatory compliance.

Flexible Sample Handling: Adjustable clamps accommodate diverse material sizes and thicknesses.

Features

Touchscreen Interface: Programmable controller with one-touch operation for ignition, timing, and data storage.

Automatic Burner System: Retracts post-test; optional gas shutoff prevents residual flames.

Flame Calibration: Optional thermocouple (K-type) and copper block ensure precise temperature control (100–700°C in ≤44s).

Multi-Angle Testing: Adjustable sample holder for horizontal (0°), 20°, or 45° vertical combustion.

High-Capacity Chamber: >0.5 m³ stainless steel box (non-calibrated options: 0.75 m³/1 m³) with black background (<20 Lux).

Exhaust System: Silent anti-backflow device removes combustion smoke post-test.

Technical Parameters

Accessories

Test Principle

The Horizontal and Vertical Flammability Tester evaluates the burning behavior of specimens under flame conditions.

By adjusting flame height and gas flow rate of the Bunsen burner, the tester simulates burning under different conditions.

The instrument measures and records ignition time, afterflame time, and afterglow time, and calculates linear burning rate.

During testing, a PLC system automatically controls flame application time, afterflame duration, and gas flow rate to ensure test accuracy and repeatability.

Test Procedure

Prepare specimens according to specified dimensions and standards.

Set flame height, flame temperature, and gas flow rate according to test requirements.

Start the test and observe the effect of the flame on the specimen while recording data.

Analyze test results and evaluate the flammability performance of the specimen.

FAQ

1. What is the main function of the Horizontal and Vertical Flammability Tester?

The tester is used to evaluate the flammability performance of plastics, rubber, and non-metallic materials by measuring burning behavior under horizontal and vertical flame exposure conditions.

2. Which test methods can be performed with this instrument?

The instrument supports both horizontal and vertical burning test methods, including those required by GB/T 2408 and UL 94 standards, allowing evaluation of ignition, burning rate, afterflame time, and afterglow time.

3. What parameters are automatically controlled during the test?

Flame application time, gas flow rate, ignition, timing of burning, afterflame, and afterglow are automatically controlled and recorded by the PLC-based control system.

4. What types of gas can be used as the flame source?

Liquefied petroleum gas is used as the standard gas source. Industrial methane gas can also be used as an optional alternative.

5. How is test safety ensured during operation?

The instrument is equipped with automatic ignition control, optional gas leakage alarm, and an exhaust system to remove combustion gases. Proper ventilation and safety procedures further ensure safe operation.