ISO 9239 Radiant Panel Flooring Tester For Critical Radiant Flux And Flame Spread Testing

ISO 9239 Radiant Panel Flooring Tester 

Product Introduce

The ISO 9239-1 Radiant Panel Flooring Tester is a precision instrument designed to evaluate the fire performance of flooring materials per ISO 9239-1:2010 and EN ISO 9239-1 standards. It measures critical radiant flux, flame spead, and smoke production for a wide range of floorings, including carpets, wood, PVC, rubber, and cork, as well as coated and composite floors. Compliant with EN 13501-1 for fire classification (A2fl, Bfl, Cfl, Dfl), this tester ensures reliable results for manufacturers and labs meeting global fire safety regulations.

Standard

ISO 9239-1

Full name: Reaction to fire tests for floorings — Part 1: Determination of the burning behaviour using a radiant heat source

Purpose: To evaluate the combustion performance of flooring materials under heat radiation and ignition conditions, measure critical radiant flux (Critical Radiant Flux, CRF), flame propagation distance and smoke production, and use it for fire protection level classification.

ISO 9239-2

Full name: Reaction to fire tests for floorings — Part 2: Determination of flame spread at a heat flux level of 25 kW/m²

Purpose: To evaluate the flame spread of flooring materials at a fixed heat flux of 25 kW/m², suitable for high fire protection requirements (such as escape routes)

EN 13501-1:2018

Full name: Fire classification of construction products and building elements — Part 1: Classification using data from reaction to fire tests

Purpose: To provide fire performance classification for building products (including flooring materials) (Euroclass system: A1fl, A2fl, Bfl, Cfl, Dfl, Efl, Ffl, and smoke generation levels s1, s2).

Role of ISO 9239 in EN 13501-1:

ISO 9239-1: Core test method, measuring critical radiant flux and smoke production, for A2fl, Bfl, Cfl, Dfl classification.

ISO 9239-2: Auxiliary test, evaluating flame propagation at 25 kW/m² heat flux, suitable for A2fl, Bfl high fire protection requirements.

Classification requirements (floor coverings):

A1fl: ISO 9239 test is not required, but EN ISO 1182 (non-flammability, temperature rise ≤ 30°C, mass loss ≤ 50%) and EN ISO 1716 (heat of combustion ≤ 2.0

MJ/kg) must be passed.

Class A2fl: Critical Radiant Flux (CRF) ≥ 8.0 kW/m² (ISO 9239-1) in combination with EN ISO 1182 (temperature rise ≤ 50°C, mass loss ≤ 50%) or EN ISO 1716 (heat of combustion ≤ 3.0 MJ/kg); ISO 9239-2 test flame propagation rate (if applicable).

Class Bfl: CRF ≥ 8.0 kW/m² (ISO 9239-1) in combination with EN ISO 11925-2 (flame height ≤ 150 mm in 30 seconds).

Class Cfl: CRF ≥ 4.5 kW/m² (ISO 9239-1) in combination with EN ISO 11925-2.

Dfl class: CRF ≥ 3.0 kW/m² (ISO 9239-1), combined with EN ISO 11925-2.

Efl class: No ISO 9239 test required, only EN ISO 11925-2 (flame height ≤ 150 mm).

Ffl class: Not tested or not meeting Efl class requirements.

Smoke generation level (based on ISO 9239-1):

s1: Total smoke ≤ 750 %·min, low light transmittance attenuation.

s2: Total smoke ≤ 1800 %·min, other cases.

scope of the tested product

Applicable Products: All floor coverings, including:

Textile carpeting (plush, nylon, blends)

Cork flooring

Wood flooring (solid, laminate, laminate)

Rubber flooring

Plastic flooring (PVC, vinyl)

Coated flooring

Cellulose insulation for attic floors (reference ASTM E970)

Feature

1 The control part adopts computer, high-precision board and module control. The signal collection and processing adopts 16-bit high-precision board, the accuracy level can reach one percent, stable performance and good repeatability.

2 The instrument has good accuracy, high precision, stable and reliable.

3 The instrument has a long service life and low operating cost.

4 The instrument is equipped with corresponding auxiliary equipment and consumables to ensure the normal operation of the equipment.

5 Computer control interface: It adopts high-end equipment and instrument professional development software (Labview), with rigorous interface and high degree of automation. All cumbersome procedures and calculations have been integrated into the computer, with very fast response speed and easy operation.

6 Operating software: Windows xp operating interface, Labview style, perfect safety mechanism.

Main parameter

1. Composition of the whole machine: The equipment mainly consists of test equipment, smoke density measuring device, radiation value calibration system, gas control system and data acquisition system. It complies with the provisions of GB/T11785-2005 standard.

2. Test chamber:

2.1 Structure: It is composed of calcium silicate board with thickness (13±1) mm and nominal density 650kg/m3 and fireproof glass with size (110±10) mmx(1100±100) mm. The fireproof glass is quartz high-temperature glass, which is installed in front of the box so that the progress of the entire test piece and the combustion situation can be observed through the observation window during the test; a metal protective layer is installed on the outside of the test chamber, and a tightly closed door is installed below the observation window, so that the test piece platform can be moved in or out; the panel is made of high-quality stainless steel with a thickness of 1.2 mm.

2.2 The bottom of the test box is composed of a sliding platform, which can strictly ensure that the specimen fixture is in a fixed horizontal position. The total air circulation area between the test box and the specimen fixture is (0.23±0.03) m2, and is evenly distributed on both sides of the long side of the specimen.

3 Radiant heat source: It is a fine-pored ceramic heat radiator installed in a metal frame. The outer frame of the radiation plate is made of stainless steel (2.5±0.2) mm, and the radiation plate is made of porous refractory material. The radiation area size is (300±10) mmx(450±10) mm. The radiation plate can withstand a high temperature of 900℃, and the air-gas mixing system uses an appropriate device to ensure the stability and repeatability of the test. The radiation heating plate is installed above the specimen fixture, and the angle between its long side and the horizontal direction is (30±1)℃.

radiant heat source

4 Specimen fixture (specimen holder): Made of fire-resistant L-shaped stainless steel material with a thickness of (2.0±0.1) mm. The exposed surface size of the specimen is (200±3) mmx (1015±10) mm. The specimen fixture is fixed to the sliding steel platform with two screws at both ends. The specimen is fixed on the specimen fixture. The total thickness of the fixture is (22±2) mm. There are scale marking lines on the surface of the specimen holder for easy observation.

Test fixture

5 Ignitor (burning torch):

5.1 Made of stainless steel, with an inner diameter of 6mm and an outer diameter of 10mm. There are two rows of holes on the ignitor, with 19 radial holes with a diameter of 0.7mm evenly distributed on the center line, and 16 radial holes with a diameter of 0.7mm evenly distributed on the line 60° below the center line.

5.2 During the test, the propane gas flow rate was controlled at (0.026±0.002)L/S. The placement of the ignitor ensures that the flame rising from the lower row of holes can contact the specimen at (10±2)mm before the zero point of the specimen. When the ignitor is in the ignition position, it should be 3mm above the edge of the specimen fixture. When the specimen does not need to be ignited, the ignitor is moved 60mm away from the zero point of the specimen and automatically controlled using pneumatic components.

ignite

5.3 Gas: Commercial propane gas with a calorific value of 83MJ/M3 is used as the test gas.

5.4 Flame height: When the propane gas flow is adjusted normally and the igniter is in the test position, the ignition flame height is (60~120) mm. Adjustable

5.5 The gas system is equipped with a low-pressure protection device and a Venturi mixer device;

6 Smoke exhaust system:

6.1 Composition: It is used to extract the combustion smoke and is not directly connected to the box. When the radiation plate is closed and the simulated sample is in the specified position and the sample entrance and exit door is closed, the gas flow rate in the box flue is (2.5±0.2) M/S.

6.2 Smoke exhaust capacity: The smoke exhaust capacity of the smoke exhaust system is (39-85) m3/min, at a temperature of 25℃.

6.3 Measurement of the flow rate of the smoke exhaust channel and the installation position. The flow rate is measured by a digital anemometer. The accuracy is ±0.1m/s. Installed on the flue of the box, the measuring point is just on the center line (250±10)mm above the lower edge of the flue of the box.

6.4 Anemometer: Range 0-10 m/s, exhaust speed (2.5±0.2) m/s.

7 Radiation pyrometer:

7.1 Control the heat output of the radiation board.

7.2 Use high-precision digital display radiation pyrometer.

7.3 Measuring range: (480-530)℃ black body temperature;

7.4 Measurement accuracy: ±0.3℃;

7.5 Sensitivity: Constant within the wavelength range of 1um to 9um;

7.6 Installation position: About 1.4M away from the radiation board, it can sense the temperature of a circular surface with a diameter of 250mm on the radiation.

High-precision radiation pyrometer

7.7 Radiant panel gas flow: flow meter is used to adjust the flow, the range is 1.5~15L/min

7.8 Radiant panel air flow: flow meter is used to adjust the flow, the range is 60~600L/min

8 Temperature measurement

8.1 Measurement of radiation test chamber temperature: 3.2mm diameter stainless steel armored thermocouple of OMEGA Company of the United States is used. The thermocouple has an insulated and non-grounded hot contact and is installed 25mm below the top plate of the box, 100mm behind the inner wall of the box flue, and on the longitudinal center line behind the test chamber.

8.2 Measurement of box flue temperature: 3.2mm K-type stainless steel armored thermocouple is used. The thermocouple is inserted in the middle of the box flue, and is (150±2)mm away from the top of the box flue.

9 Measurement of radiation flux:

9.1 Heat flux meter measurement (customer-provided): heat flux meter, range: (0-50) kw/m2, circular foil heat flux meter with a measuring end diameter of 25 mm, the radiation flux during calibration is (10-15) kW/m2.

9.2 Accuracy of heat flux meter: ±0.2KW/m2;

9.3 Total values and errors of radiation flux:

Radiation flux calibration device

Radiation flux calibration curve graph

9 Standard calibration plate (porous calibration plate): Made of uncoated calcium silicate plate with a thickness of (20±1) mm and a density of (850±100) kg/m3, the dimensions are (1050±20) mm in length and (250±10) mm in width. Along the center line, starting from the zero point of the specimen, 9 circular holes with a diameter of (26±1) mm are opened at 110 mm, 210 mm, and up to 910 mm.

10 Measurement of smoke density:

10.1 Composition: It consists of a light source (incandescent lamp), a lens, a light hole, a silicon photocell (silicon photodiode) and a measurement system;

10.2 Light source: incandescent lamp, color temperature (2900±100) K. The light source is powered by a stable DC power supply with a fluctuation range of ±0.5%.

10.3 Optical receiver: Using imported silicon photocells from Hamamatsu, Japan, the board amplifies the signal and outputs current through the I/O board. The dispersed spectral response of the photocell is consistent with the CIE photoelectric curve, with an accuracy of at least ±5%. The noise and drift of the optical amplifier system are both less than 0.5% of the initial value.

10.4 Installation of the optical measurement system: Placed on the longitudinal axis of the box flue; the optical receiver and light source are placed on an independent frame outside the smoke exhaust system, which is only connected to the smoke exhaust system; the measured value responds linearly to the light flux output signal, and the measurement accuracy is at least ±1.5%.

10.5 Using optical measurement elements, the measurement range is 400-750nm visible light range, the transmittance range: 0%~100%, the transmittance accuracy is 0.01%; the optical density (OD) range is 0~4.0, and the smoke density accuracy is ±1%.

10.6 Calibration of optical measurement system: Use filters with transmittance of 0%, 25%, 50%, 75%, and 100% for calibration, and provide filter slots for calibration.

Smoke density measuring device

11 Timer: accuracy <1s/h.

12 Data acquisition system

12.1 Includes industrial module, control system, computer.

12.2 Analog acquisition module: 12 inputs, acquisition rate is 10 times/second, acquisition bit number is 16 bits;

12.3 Switch input and output module: 5 optically isolated passive switch inputs, 5 relay normally open outputs;

13 Control system and operation interface:

13.1 The instrument equipment special development software LabeView and data acquisition control card are used to display the radiation flux calibration curve, light transmittance curve, box temperature, etc., and the ASTM E648 test calibration curve is also included.

13.2 Control method: The board module I/O board and PID + SSR control method are used. The acquisition system can collect and record the CHF value, HF-10 value, HF-20 value, HF-30 value of the radiation flux curve, as well as the flame extinction time and flame propagation distance.

13.3 Test software: Contains the following functions;

13.3.1 Standard test procedure for radiation flux curve.

13.3.2 Smoke detection system calibration procedure, including optical system zeroing and range, and automatic calculation of optical system drift;

13.3.3 Record, test and calibration report printing;

13.3.4 Output and printing of test reports.

13.3.5 One computer