Single Burning Item SBI

  • EN 13501
  • , EN 13823
The Single Burning Item (SBI), is a method of test for determining the reaction to fire behavior of building products (excluding floorings) when exposed to the thermal attack by a single burning item (a sand-box burner supplied with propane. The specimen is mounted on a trolley that is positioned in a frame beneath an exhaust system. The reaction of the specimen to the burner is monitored instrumentally and visually. Heat and smoke release rates are measured instrumentally and physical characteristics are assessed by observation.
Most building sold in Europe and China will need to be tested and classified using this test method.


  • The Single Burning Item (SBI) consists of a trolley, a fixed frame, a gas collecting hood, collector, J type exhaust pipe, centrifugal fan, wind speed control device, the comprehensive measurement section, gas analysis cabinet, data acquisition system;
  • ​The trolley can be installed with two vertical sample specimens. The bottom of the vertical angle is a sand box burner. The surface ignition method is adopted, and the flame detection system is equipped as a flameout protection device;
  • ​The fixed frame supports the gas collecting hood. The frame is fixed with an auxiliary burner and equipped with a flame detecting system as a flameout protection device;
  • ​Stainless steel gas collector, located at the top of the fixed frame, used to collect combustion gases;
  • ​Stainless steel J type smoke exhaust pipe, the inner diameter is (315 + 5) mm with 50mm high temperature resistant mineral cotton insulation;
  • ​The smoke exhaust system shall continuously exhaust smoke at the speed of 0.50m3/s-0.65 m3/s, and be regulated by frequency conversion;
  • ​Mass flow controller, measuring range of 0g/s-2.5g/s, reading accuracy of better than 1.5%;
  • ​Gas supply can be automatically controlled to flow rate of 647mg/s and 2000mg/s, the gas control system can guarantee the speed of gas supply in the process of test changes should not exceed 5mg/s, to ensure the heat output of 30.7 + 2kW;
  • ​The flue gas sampling system consists of an ash filter, a cold trap, two drying columns, a sampling pump and a peristaltic pump, so as to effectively make sample gas clean and dry;
  • ​Paramagnetic oxygen analyzer, measuring range of 0-25%, measuring oxygen concentration in the gas, and the delay time T90<12 seconds;
  • Non dispersive infrared CO2 analyzer, measuring range of 0-10%;
  • ​A pipeline with a length of 2155mm, equipped with a pressure probe, three thermocouples, a gas sampling probe, and a white light system;
  • ​The light system is incandescent type, with (2900±100) K lamp, and the flexible joint is installed on the side of the exhaust pipe;
  • Silicon photodiode detector, with 0.1% linear stability;
  • Simple-to- use software, provides calibration, operation, review and output functions


  • Model No.: SBI
  • Dimensions: Approx. 3000mm(W) × 4500mm(H) × 3000mm(D)
  • Weight: Approx. 650kg
  • Voltage: AC 220V 50Hz 16A & AC 380V 50Hz 16A or customized
  • User Manual: Available.
  • Gas Supply: Propane, purity not less than 95%
  • Others: Compressed Air (6bar).

Download PDF Datasheet

Download PDF