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Fire Retardant Coatings Tester, ASTM E84 Tunnel Test Equipment

Get a quote:

Whats/App: +86 156 1874 6768

Web: standard-groups.com

E-mail:info@standard-groups。com

Technical parameters

ItemDescription
Burner Top Diameter 20mm
Burner Height Approximately 200mm
Burner Blue Flame Temperature (900±20)°C
Combustible Gas Source Natural gas, liquefied petroleum gas, or city gas
Thermocouple Armored thermocouple with precision of work grade, K type, outer diameter not greater than 3mm
Electronic Potentiometer Error less than ±0.5% of the measured temperature
Ignition System High voltage electronic ignition system

Test Procedures

Equipment Composition: The tunnel method tester consists of a main control box and a combustion chamber. The combustion chamber is a tunnel furnace welded from a metal steel frame, equipped with natural ventilation ports, gas supply ports, and a graduated observation window. The control box is equipped with a digital display temperature control system, a gas flow rate adjustment device, and a combustion temperature recorder.

Test Conditions: The test uses a standard flame of 900±20℃. Temperature monitoring is achieved through thermocouples and an electronic potentiometer. Environmental conditions must meet the requirements of a temperature of 5–35℃ and a relative humidity of ≤85%.

Test Procedure: Under laboratory conditions, the flame propagation characteristics are tested using the tunnel method tester to evaluate the protective effect of the fire-retardant coating on the substrate and the quality of its flame propagation performance.

Results Analysis: Through quantitative analysis, the performance of the fire-retardant coating is evaluated, providing an objective basis for the use and selection of fire-retardant coatings.

The tunnel method test provides objective experimental evidence for the performance evaluation of fire-retardant coatings and is suitable for quantitatively testing the flame retardant performance of fire-retardant coatings applied to the surface of substrates under laboratory conditions.


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