Single Burning Item

TESTech Instrument (Suzhou) Technologies is one of the leading manufacturers and suppliers of single burning item in China. Welcome to wholesale premium test equipment at competitive price from our factory. If you have any enquiry about quotation, please feel free to email us.

The Single Burning Item (SBI) test apparatus is used to determine the reaction-to-fire performance of construction materials and products, excluding flooring materials, under single burning thermal attack.

The sample is placed on a movable trolley under the exhaust system and exposed to flames from a methane sandbox burner. The combustion reaction can be displayed automatically and observed visually.

The combustion characteristics are evaluated by calculating the heat release rate (H.R.R.) and smoke release rate (S.R.R.), while other physical characteristics are assessed by visual observation.

Representative measurement factors include the Fire Growth Rate Index (FIGRA), oxygen consumption, CO and CO2 generation, and the Smoke Growth Rate Index (SMOGRA). The maximum heat release rate reaches 1 MW.

• The structure and control design integrate ergonomic considerations.
• The equipment consists of a combustion chamber, movable trolley, smoke exhaust duct, gas supply system, control system, and data processing system.
• Combustion chamber dimensions: 3 m x 3 m x 2.4 m. The room uses solid brick walls and reinforced concrete, with gray fireproof coating inside and outside, a fireproof door, and a tempered glass window.
• The internal fixtures are made of stainless steel for good appearance and corrosion resistance.
• The J-shaped smoke exhaust duct is a stainless steel round pipe with an inner diameter of 315 mm +/- 5 mm.
• The trolley is equipped with a main burner and an auxiliary burner. The burner size is an isosceles triangle with a side length of 250 mm.
• The trolley backboard uses calcium silicate board with a density of 800 +/- 150 kg/m3 and a thickness of 12 +/- 3 mm.
• Smoke exhaust capacity: 0.50 m3/s to 0.65 m3/s.
• Imported pressure sensor range: 0 to 100 Pa; accuracy: +/- 2 Pa; response time for 90% output: up to 1 s.

1. 10 kV spark igniter equipped with a safety flameout device. The igniter is automatically positioned through a lever connected to the closing mechanism.
2. Japan-imported mass flow meter controls the input flow, with a range of 0 g/s to 2.3 g/s and reading accuracy of 1%.
3. Bipolar gas flow valve control system helps avoid gas leakage caused by solenoid valve failure and reduces explosion risk.
4. Two stainless steel sandbox burners manufactured according to the standard, with a plate thickness of 1.5 mm.
5. Rectangular shield plate: width (370 +/- 5) mm, height 550 +/- 5 mm, made of calcium silicate board.
6. Imported mass flow controller with a range of 0 g/s to 2.3 g/s and reading accuracy of 1% within 0.6 g/s to 2.3 g/s.
7. The gas supply switch automatically changes the combustion status of the main burner and auxiliary burner.
8. Taiwan Delta inverter and inverter fan provide an automatic closed-loop wind speed control system to control the exhaust rate at (0.6 +/- 0.05) m3/s.
9. Flame detection function automatically cuts off the gas after flameout to protect operation and equipment safety.

• High-precision patented sampling system ensures stable sampling gas entering the gas analyzer without impurity interference for more accurate analysis results.
• Includes a particulate filter and a three-stage filtration system with filtration accuracy of 0.5 um.
• Cold trap uses a compressor-based refrigeration system. Gas sampling temperature is controlled at 0 to 5 degrees C to protect analyzer stability and service life.
• Germany-imported suction pump with flow rate of 33 L/min, vacuum of 700 mmHg, and pressure of 2.5 bar.
• Drying cylinder performs drying and impurity removal treatment for the oxygen and nitrogen dioxide analysis gas paths.
• High-precision ball valve is used for opening and shutting the gas path.
• Japan-imported flow controller.

1. Oxygen concentration analysis uses an imported-brand paramagnetic oxygen analyzer. O2 measurement range: 0 to 25%; linear deviation: less than 0.5% of full scale; repeatability: less than 50 ppm O2; analyzer response time (T90): less than 3.5 s.
2. Imported-brand CO2 analysis uses an infrared CO2 analyzer. CO2 measurement range: 0 to 10%; linear deviation: less than or equal to 1% of full scale; repeatability: less than or equal to 0.5% of full scale; analyzer response time (T90): less than 2.5 s.
3. Smoke density analysis uses an incandescent light system with color temperature of 2900 +/- 100 K; current fluctuation range of +/- 0.5%; linear smoke density output; time compensation function; and imported photocell module for smoke density measurement.
4. Transmittance calibration mode provides one-key five-level automatic calibration and is equipped with imported optical filters, without manual filter replacement.
5. The detector has spectral response matching CIE, chromatic standard function accuracy of +/- 5%, and output linearity within 3% of transmittance or within 1% of absolute transmittance.
6. The response time for 90% system output is not more than 3 s.
7. Three K-type armored thermocouples imported from the United States, diameter 0.5 mm, temperature accuracy 0.5 degrees C.
8. Pressure sensor imported from the United States, range 0 to 100 Pa, accuracy +/- 2 Pa, and response time for 90% output up to 1 s.
9. Smoke exhaust capacity: 0 to 0.65 m3/s.
10. Other general thermocouples: 2 mm K-type armored thermocouples.
11. Ambient pressure accuracy: +/- 200 Pa.
12. Minimum system recording time: 3 s.
13. System time recording accuracy: 0.1 s.

• Standard control cabinet with computer and Labview intelligent control system.
• Modular system design with modules for system configuration, calibration, testing, diagnosis, and reporting.
• Control parameter setting and display, together with test status and fault display and query.
• Data parameters are displayed in both digital and curve formats for observation and trend judgment.
• Data detection and acquisition, screen monitoring, real-time temperature curve display, real-time CO2/O2 curve display, and historical curve and data query.
• Raw data and test results are stored in Excel format.
• The report module provides data preview, query, correction, and report export functions.
• The machine can be operated independently to complete the test. The computer control system uses Labview experimental control software from the United States.
• Sound alarm and alarm event display functions.
• USB/RS232 serial port on the control cabinet for external desktop or laptop operation.
• Programmable logic controller (PLC) control system with automatic ignition and ignition failure detection protection.
• Automatic control and display of propane gas flow.
• PLC and inverter provide automatic control and display of exhaust gas flow.
• Automatic measurement and calculation of combustion data, including heat release rate (H.R.R.), smoke growth index (SPR), oxygen consumption (O2), and generated CO2.
• An independent acquisition box module collects test-section data and communicates with the main control cabinet through Modbus to ensure accurate signal transmission.
• The test report supports switching analysis between full-size charts and thumbnail charts.
• Freely selectable display curves for O2, CO2, temperature, wind speed, and other data.
• The signal acquisition processing module is linked with the air volume circuit control module. The programmable controller performs logical calculation and intelligently adjusts the preset wind speed. The mechanical rotation module is linked with the controller I/O port to control the closing state of the rotating mechanism.
• Labview operating software provides a user-friendly interface and strong data interaction functions for scientific research analysis.
• The software adopts modular functional design and can independently analyze process curves for each test data set.
• By setting parameters and revising raw data during testing, the system can compare differences in test results for the same sample and help customers analyze influencing factors.
• Real-time calculation, analysis, and display of process parameters, including heat release rate (H.R.R.), smoke growth index (SPR), oxygen consumption (O2), CO2 generation, mass loss, radiant heat, wind speed, and total heat release.
• The optical system calibration uses one-key five-level automatic calibration at 0%, 25%, 50%, 79%, and 100%, and automatically generates a calibration report.