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UL94 Horizontal and Vertical Flame Tester

Description designed according to UL94, IEC60695-11-4 and IEC60695-11-3 Model HVR-4

UL94 Horizontal and Vertical Flame Test Apparatus

1. Introduction

Horizontal and vertical flame test apparatus is applied to simulate the fire at the early stage surround the electric and electronics appliance, and then evaluate the degree of fire hazard. It is designed according to UL94, IEC60695-11-4, IEC60695-11-3, IEC60950, IEC707, IEC60695-2-2, ISO1210 and etc.. The flammability test uses a bunsen burner of a specified size and specified gas source (methane or natural gas) to ignite the horizontal or vertical specimen for several times in a certain flame height and a certain flame angle, the fire hazard is evaluated by burning rate, after glow time, after flame time and damage length of the specimen.

Horizontal and vertical flame test apparatus is applied to 50W vertical flame test includes V-0, V-1, V-2, horizontal flame tester HB, and 500W vertical flame test includes 5VA, 5VB, HF-1, HF-2 and HBF. It is widely used in the R&D department, QC department and production department of lighting equipment, low-voltage apparatus, household appliance, motor and etc.. And also can be used in the industries of insulation material, plastic, non-metalic material, foam with a density of not less than 250kg/m' and other solid combustible material.

The horizontal and vertical flame test apparatus is controlled by single chip and push button. The test apparatus is built-in air exhaust, the exhaust system can be preset to delay 1-3mins after power off. The front panel is made by military-grade explosion-proof glass and transparent for easy observation of the experimental process, and the shell is made by coated hardness steel. Fully independent electrical circuit and gas circuit design for safer use.

2. Parameter

Control units

single chip and push button


Φ9.5mm ± 0.3mm, 100mm length bunsen burner, source: 50W and 500W

Dip angle

00, 200, 450 (manual adjustment)

Flame height

20mm ± 2mm to 175mm±1mm (adjustable), record by height gauge

Flame time

0-999.9s±0.1s (adjustable)

After flame time

0-999.9s±0.1s (auto record, manual pause)

After glow time

0-999.9s±0.1s (auto record, manual pause)

Number of flame

0~9999 times (presettable)

Fuel gas

98% methane or 37MJ/m3±1MJ/M3 natural gas

Flow and pressure record

Double flowmeters and manometer

Gas Pressure


Gas Flow

50W:105±5ml/min or 18±1 mm,   500W:965±30ml/min or 117±3 mm

Flame calibrations

1). Flame temperature required: heat up from 1000C±50C to 7000C±30C within the time of 44s±2s (50W) and 54s±2s (500W)

2). Flame height: 50W: 20±2mm (50W)   500W: 40±2mm (inner), 125±10mm (outer)

3). Thermocouple: Φ0.5mm K type thermocouple (The insulating sleeve heat resist to 1250 ℃), 2 pieces to detect the temperature

4). Temperature measuring copper blocks

Test background


Volume of chamber

0.75 CBM, exhaust hole: Φ70mm

Thermal radiation baffle

Automatic masking

Safe operation interface

automatically power off upon open the glass window


Pick-up tray, sample clamp, wrapping tissue 12g/m2 ~30g/m2, steel wire mesh, height gauge, Cotton and etc.

Dimension of apparatus

1100mm(W)*700mm(D)*1300mm (H)

Power supply

AC220V, 50Hz, ≤500W

Contact us


ADDRESS: No. 429, Yichun South Road ( Happiness Park),   Yuanzhou District, Yichun, Jiangxi, 336000, China



TEL: 86-(0)795-3560528   FAX: 4008266163 ext. 29929

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