Indicative Fire Resistance Test Furnace ISO 834-1,EN 1363-1Advanced heat insulation test furnace for fireproof coatings

The Fireproof Coating Test Furnace evaluates thermal insulation and fire resistance of steel-structure coatings, complying with GB 14907-2018. It features automatic fire-curve tracking, stable pressure control, precise temperature measurement, and an intelligent platform, offering a reliable, highly automated testing environment for labs, inspection centers, manufacturers, and certifiers.

Application

This test furnace is suitable for determining:

1. Thermal insulation efficiency of steel structure fireproof coatings

2. Fire resistance limit of coated steel components

3. Back-surface temperature rise under standard fire exposure

4. Heating and furnace-pressure stability during fire resistance tests

It is widely used in:

5. Fire protection coating manufacturers

6. Building material testing laboratories

7. National and third-party inspection institutes

8. Research universities and engineering research centers

9. Fireproof material certification and quality evaluation agencies

Standards

This instrument is developed and manufactured in accordance with the following standards:

Primary Standards

GB 14907-2018 – Fire-Resistant Coatings for Steel Structures

GB/T 9978-2008 – Fire-Resistance Tests for Building Construction Elements

International Standards

Although the furnace is primarily based on Chinese national requirements, its fire-curve control and measurement systems align with major global fire-test methodologies, including:

ISO 834 – Standard Fire Resistance Test Curve

EN 13381 Series – Test methods for determining the contribution of fire protection materials to structural elements

ASTM E119 – Standard Test Methods for Fire Tests of Building Construction and Materials

BS 476 (Part 20–24) – Fire tests on building materials and structures

This compatibility allows the furnace to support laboratories that reference or compare international fire-test systems.

Features

The furnace incorporates advanced design and control technology to ensure stable, accurate, and repeatable testing.

Control System

Touchscreen and PC dual-control interface

Wireless connection supported; one PC can manage multiple furnaces

Automatic elimination of faulty thermocouples to maintain curve accuracy

Testing Performance

Full-automatic testing process from ignition to cooling

Real-time tracking of temperature and pressure curves

Automatic re-ignition if the flame is extinguished during testing

Automatic stop when reaching preset temperature or test duration

Safety and Reliability

Anti-power-off protection mode to avoid damage caused by sudden shutdown

Automatic cooling and exhaust system at the end of the test

Temperature deviation consistently lower than the limits required by GB standards

Data Management

Storage capacity for more than 100 sets of test data

Curve display for furnace temperature, back-surface temperature, and pressure

User-friendly interface for on-site operation or remote control

Parameters

Item	Specification
Working Voltage	AC 220V ± 10%, 50 Hz
Power Consumption	3 kW
Furnace Pressure Range	0–100 Pa
Pressure Control Accuracy	20 ± 3 Pa
Airflow Range	0–50 m³/min
Airflow Accuracy	≤ ±0.5 m³/min
Fuel Type	0# or −10# diesel
Standard Fire-Curve Temperature Program	60 min: RT–925°C; 120 min: RT–1050°C; 180 min: RT–1115°C; 240 min: RT–1150°C; 300 min: RT–1180°C; 360 min: RT–1210°C
Furnace Temperature Sensors	4 pcs K-type armored thermocouples
Back-Surface Temperature Sensors	2 pcs, accuracy ±4°C
Temperature Control Mode	Average or independent control
Heating Mode	Fully automatic diesel spray burner
Cooling Mode	Automatic exhaust and cooling
Timing Range	0–360 min
Data Storage Capacity	≥100 sets
Sample Size	500 × 500 × 6 mm
Overall Dimensions	1.6 m × 1.6 m × 1.6 m

Test Procedures

1. Cut the sample using a 250mm × 90mm template. If the sample is a melt-shrinkable product, use a 250mm × 180mm template.

2. Clamp the sample in a 250mm × 90mm sample holder, tighten the wing nut, and secure the sample. The sample holder size for melt-shrinkable products is 250mm × 180mm. At this point, do not yet mount the sample holder onto the horizontal rod.

3. Turn on the power switch and set the ignition time to a slightly longer duration, such as 5 minutes. Select the appropriate positioning device according to the ignition method. After pressing "Start Test" and the burner stops at the 45° position, insert one end of the positioning device into the burner. Now mount the sample holder onto the horizontal rod and adjust the sample holder's up, down, left, and right positions to meet the test requirements. Remove the positioning device. Press the return key. After the burner resets, press "Test Reset".

4. Press and hold the ignition button, and simultaneously adjust the flame adjustment valve on the instrument panel. After igniting the gas, adjust the flame height to 20 ± 1mm. When adjusting the flame from large to small, it is easier to first tighten the flame adjustment knob on the panel. The height gauge should be at 20mm. Close the front door.

5. Place two pieces of filter paper in the collection tray and then place it under the sample.

6. Set the ignition time, press "Start Test," and the burner will automatically rotate to the 45° position and remain there for the set ignition time, then reset. The afterglow time starts counting simultaneously. If the sample stops afterglow before reaching the marked line, press "Stop Afterglow." If the sample afterglow reaches the marked line, immediately press "Stop Afterglow." Record the burning time.

7. Press "Test Reset" to stop the test. To continue the test, repeat the above steps; otherwise, turn off the power. Provided by Shandong Provincial Textile Science Research Institute.

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