GB/T 20284-2026/GB 8624-2025 Single Burning Item Test Apparatus (SBI) for Building Materials

Description

JCDT SBI Single Burning Item Test Chamber | GB/T 20284 GB 8624 Building Material Fire Reaction Tester

1. Product Overview

The JCDT Single Burning Item (SBI) Test Apparatus is a domestically developed full-automatic fire test chamber designed strictly to GB/T 20284-2026 and GB 8624-2025 standards. It simulates single burning fire scenarios to evaluate the reaction-to-fire performance of all building and decorative construction products.

Optimized from mature imported equipment designs, this integrated unit features a compact modular split structure, premium exterior finish and stable long-run operation. Equipped with a comprehensive computer data acquisition system, it automatically captures all combustion parameters and computes core fire grading indicators including heat release rate (HRR), total heat release over 600s (THR600s), fire growth rate index (FIGRA), smoke growth rate index (SMOGRA) and smoke production rate. It serves as cost-effective replacement for expensive imported SBI furnaces, widely adopted by fire certification labs, construction inspection institutions and building material manufacturers worldwide.

2. Applicable Standards

GB/T 20284-2026 Single burning item test for building materials or products
GB 8624-2025 Classification for burning behavior of building materials and products

3. Core Technical Specifications

3.1 Environmental & Power Parameters

Smoke exhaust flow: Auto adjustable range 0.5 ~ 0.65 m³/s
Power supply: AC 380V, 50Hz; Max total power: 9 kW
Timing system precision: 0.1s; Data sampling interval: 3s

3.2 High-Precision Detection Sensors

Ambient temp probe: 1mm diameter K-type sheathed thermocouple
Exhaust duct temp probe: Imported 0.5mm K-type sheathed thermocouple
Temperature measurement accuracy: ±0.5℃
Exhaust pressure sensor: 0~200Pa range, precision ±2Pa

3.3 Equipment Dimensions

Overall unit size (chamber + exhaust hood): 5500 × 3150 × 4500 mm (L×W×H)
Internal combustion chamber dimension: 3150 × 3150 × 2500 mm (L×W×H)

3.4 Structural & Control Configuration

Detachable assembled cabinet frame for easy transport and on-site assembly
Double-layer insulated exhaust duct, collection hood and collector to eliminate heat loss and guarantee stable test data
Dedicated industrial solenoid valves for precise propane fuel combustion control
All-in-one PC data acquisition system synchronously records data from mass flow controller, pressure sensor, thermocouples, gas analyzer and white-light smoke meter; auto calculates key fire grading indicators

4. Main Product Features

Fully compliant with national SBI fire grading standards

All chamber geometry, airflow, temperature and pressure parameters fully match GB/T 20284 and GB 8624 standards, test reports are valid for official building material fire performance certification.
Fully automatic PC intelligent testing workflow

One-click start of full test cycle; the system auto collects all sensor signals and calculates FIGRA, SMOGRA, HRR, THR600s without manual calculation, drastically boosting lab daily throughput.
Imported high-precision multi-sensor detection suite

Dual-spec K-type thermocouples + ±2Pa precision pressure sensor deliver temperature accuracy within ±0.5℃, paired with high-resolution 0.1s timing system for highly repeatable test results.
Double-layer heat insulation exhaust system

Insulated duct and smoke hood minimize heat leakage, stabilize exhaust airflow throughout testing; exhaust volume adjusts automatically to maintain standard flow rate of 0.5–0.65 m³/s.
Modular detachable combustion chamber design

Split cabinet frame allows disassembly into separate modules, lowering transportation costs and simplifying on-site installation compared with monolithic imported SBI equipment.
Stable dedicated gas combustion control unit

Specialized solenoid valves precisely regulate propane supply, maintaining consistent flame intensity without gas flow fluctuation during long-duration standard tests.
Complete integrated smoke & flue gas monitoring system

Built-in white-light smoke measuring device and gas analyzer simultaneously capture smoke output and flue gas composition for comprehensive fire hazard assessment of construction products.
Cost-effective alternative to imported SBI equipment

Equal test performance to overseas SBI test furnaces at a far lower price, with local fast after-sales support and spare parts supply, widely promoted among global fire testing laboratories.

5. Application & Target Customers

Decorative panel, insulation board and building material manufacturers
Third-party fire safety certification and inspection laboratories
Construction engineering quality supervision testing centers
University fire safety & building material research institutes
Flame retardant composite and coating R&D enterprises

6. Why Choose JCDT SBI Single Burning Item Tester

✅ Strictly conforms to GB/T 20284 & GB 8624 for building material reaction-to-fire classification
✅ Fully automatic PC system auto computes FIGRA, SMOGRA, HRR, THR600s and smoke parameters
✅ Imported precision thermocouples and pressure sensor, ±0.5℃ temperature measurement accuracy
✅ Double-layer insulated exhaust hood and duct to stabilize standard exhaust airflow
✅ Detachable modular combustion chamber for easy transport and field assembly
✅ Dedicated solenoid valve gas control for stable consistent test flame
✅ Integrated white-light smoke meter and gas analyzer for full fire hazard evaluation
✅ Budget-friendly domestic replacement for high-cost imported SBI testing equipment