ISO 11925-2 Building Material Flammability Tester

Combustion chamber

1). Completed designed according to ISO11925-2 figure 1

2). Material: made of stainless steel sheet with thickness 1.5mm

3). the heat-resistance glazed doors are installed on front and right-side panels

4). Outer dimension: W1000mm*D400mm*H810mm

5). Ventilation of the enclosure shall be free through the square box section base in the bottom of the chamber, the air vents consist of 5cm*5cm open squares (made of 1.5mm thickness stainless steel and 50cm in height)  to keep the air flowing smoothly.

Ignition source

1). The burner is completed designed according to ISO11925-2 figure 2

2). The burner shall be mounted onto a horizontal plate so that it moves smoothly forwards and backwards in a horizontal plate along the centreline of the combustion chamber

3). The burner can be used vertically or be tilted at 45° with respect to the vertical axis

Fuel

Commercial propane of 95% minimum purity, the gas pressure shall be between 10kPa and 50kPa (prepare by user)

Specimen holder

1). The specimen holder is completed designed according to ISO11925-2 figure 3, and vertical installed as per figure 4

2). consisted by 2 stainless steel U-sharped frames, the frame has a thickness of 5±1mm，the two halves of the specimen holder shall be held together by screws or clamps to prevent the specimen warping。

Flame height gauge

Completed designed according ISO11925-2 figure 8

Burner positioner

Completed designed according ISO11925-2 figure 9, edge flame impingement*1, surface flame impingement*1

ignition

High pressure automatic ignition, durable combustion

Test flame height

20±1mm (the flame height is adjusted by flowmeter, and measured by flame height gauge)

Flame application time

0-999.9s (presettable)

Test time

0-999.9s (presettable)

Anemometer

hot wire, with an accuracy of ±0.1m/s, for measuring the airflow velocity in the upper outlet of the combustion chamber

Input power supply

AC 220V/50Hz

Working condition

15℃~35℃ (ambient temperature), ≤85% (R.H.)