ISO11925 flammability test furnace for Building materials

Key attributes

Industry-specific attributes

Power： Electronic

Other attributes

Customized support： OEM

Place of Origin ：China

Brand Name ：XSZRAY

Model Number： ZR-JCK-3

Ambient temperature： 15 ° C ~ 25 ° C

Relative humidity：≤85%

Supply voltage and power：220V 50HZ 100W

Gas source：liquefied petroleum gas

Combustible gas source ：propane with purity over 95%

I. Scope of Application

This touch‑screen controlled building material combustibility test furnace is an upgraded model featuring a stainless‑steel cabinet, touch‑screen control, controllable automatic specimen lifting, and forward‑backward adjustable Bunsen burner. It is a high‑configuration instrument for building‑material combustion‑grade testing manufactured in strict accordance with GB/T 8626.

Under normal combustion conditions, a small flame directly impinges on the vertically mounted specimen to determine the combustibility of building products. Based on the German Kleinbrenner principle, the apparatus assesses the combustion performance of Class B building materials under direct vertical impingement of a small flame (for classification of combustion‑performance / flame‑retardant Class B of building materials).

II. Product Features

1. Ergonomic operation design. All test operations are completed via the touch screen with high‑level automation. Historical test results can be stored and retrieved.

2. Servo‑motor driven specimen holder with controllable automatic lifting function.

3. Forward‑backward adjustable Bunsen burner.

4. Cabinet constructed from 1.5 mm stainless‑steel plate.

5. Two tempered heat‑resistant glass doors for dual‑angle observation of tests; both doors are lockable for convenient practical use.

6. Automatic high‑voltage ignition for stable and durable combustion.

7. Ignition source can automatically tilt to 45°.

8. Flame height adjusted by precision regulating valve.

9. Specimen holder adjustable vertically and horizontally (forward‑backward).

10. Equipped with two types of specimen clamps.

11. Graduated scale for flame‑height measurement.

12. High degree of automation, accurate test data and user‑friendly operation.

13. Cabinet dimensions: Width 835 mm × Depth 400 mm × Height 815 mm.

14. Material: 1.5 mm stainless steel.

15. Horizontal natural ventilation openings at cabinet bottom, composed of 2.5 cm × 2.55 cm grid vents (genuine 1.5 mm thick steel‑plate vents, height 50 mm) to ensure uniform airflow passage.

16. Fine craftsmanship with genuine weld‑free construction.

17. Touch‑screen display: a. Size: 7‑inch; effective display area: 15.5 cm (length) × 8.6 cm (width). b. Resolution: 800 × 480. c. Communication interface: RS232, 3.3 V CMOS / TTL, serial‑port mode. d. Storage capacity: 1 G. e. Pure hardware FPGA‑driven display; zero start‑up time, ready‑to‑run upon power‑on. f. M3 + FPGA architecture: M3 for instruction parsing; FPGA dedicated to TFT display. g. Low‑power processors for main controller; automatic energy‑saving mode.

18. Optional accessory: Air‑velocity device as specified in Clause 4.2 of GB 8626‑2026. This item is frequently required for third‑party laboratory acceptance inspections. Not supplied with standard delivery, available as a later add‑on.

19. Optional accessory: Loose‑specimen clamp complying with Clause 4.5b of GB 8626‑2026. Not supplied with standard delivery, available as a later add‑on.

III. Technical Specifications

1. Ambient temperature: 15 ℃ ~ 25 ℃.

2. Relative humidity: ≤ 85 %.

3. Power supply: 220 V, 50 Hz, 100 W.

4. Gas source: Commercial propane with purity ≥ 95 %; liquefied petroleum gas may be used for routine tests as an alternative.

5. Flame application duration from Bunsen burner to specimen: 15 s.

6. Single‑chip‑microcomputer control with digital readout.

7. Burner orifice diameter Φ0.17 mm; Bunsen‑burner flame length 20 mm ± 1 mm; burner capable of 45° tilting.

8. Adjustable flame‑application time: 1 s‑99 s, tolerance ± 0.5 s; adjustment accuracy ± 0.2 s.

9. Combustible gas source: Propane with purity ≥ 95 %. (Note: Gas cylinder and connecting fittings shall be provided by the user.)

IV. Applicable Standards

• Applicable standard: ISO 11925‑2:2002 E Reaction‑to‑fire tests — Ignitability of building products subjected to direct impingement of flame — Part 2: Single‑flame source test

• Design standard: GB/T 8626‑2026 Test method for combustibility of building materials