TESTech TTech-GBT7633 Fire Resistance Testing Furnace for Doors and Roller Shutters (Compliant with GB/T 7633–2008, ISO 3008:2007, and GB/T 9978.1–2008)
| Brand | TESTech |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | OEM Manufacturer |
| Product Category | Domestic |
| Model | TTech-GBT7633 |
| Supply Voltage | AC 380 V ±10%, 50 Hz |
| Power Consumption | 6 kW |
| Furnace Pressure Range | 0–100 Pa |
| Pressure Measurement Accuracy | ≤ ±3 Pa |
| Airflow Range | 0–50 m³/min |
| Airflow Accuracy | ≤ ±0.5 m³/min |
| Fuel Source | Propane or Liquefied Petroleum Gas (LPG) |
| Gas Cylinder Capacity | 50 kg × 6 |
| Backside Radiant Heat Flux Range | 0–10 W/cm² |
| Target Furnace Pressure | 15 Pa ±5 Pa |
| Temperature Ramp Profile | 15 min → 718 °C, 30 min → 821 °C, 60 min → 925 °C, 90 min → 986 °C, 120 min → 1029 °C, 180 min → 1115 °C, 240 min → 1150 °C |
| Furnace Temperature Uniformity | ±15 °C |
| Internal Specimen Temperature Tolerance | ±10 °C |
| Backside Surface Temperature Tolerance | ±4 °C |
| Thermocouples | 9× K-type (NiCr-NiSi), ASTM E230/IEC 60584 Class II, 2.0 mm sheath, 25 mm exposed tip (furnace) |
| Timing Range | 0–240 min |
| Timing Accuracy | < ±1 s |
| External Dimensions (L×W×H) | 3.8 m × 2.4 m × 4.5 m |
| Net Weight | 4500 kg |
| Vaporization System Capacity (optional) | 150 kg/h |
| Furnace Cavity Dimensions | 3.0 m (L) × 3.0 m (H) × 1.25 m (D) |
| Refractory Lining Thickness | 65 mm |
| Max Operating Temperature | 1250 °C |
| Structural Frame | Steel framework with high-density refractory brick (ρ > 1000 kg/m³) and high-temp insulation |
| exterior cladding | color-coated steel |
Overview
The TESTech TTech-GBT7633 Fire Resistance Testing Furnace is a fully integrated, standards-compliant thermal testing system engineered for evaluating the fire resistance performance of non-loadbearing doors and roller shutters installed in vertical separating elements. Designed in strict accordance with GB/T 7633–2008 “Fire Resistance Test Methods for Doors and Roller Shutters”, it also satisfies ISO 3008:2007 “Fire-resistance tests — Door and shutter assemblies”, ISO 3008 “Fire-resistance tests — Complete door and shutter assemblies”, and GB/T 9978.1–2008 “Fire-resistance tests — Elements of building construction — Part 1: General requirements”. The furnace employs a controlled propane or LPG-fueled combustion system with precision air-fuel ratio regulation, enabling reproducible, programmable temperature-time curves up to 1150 °C over durations up to 240 minutes. Its structural design incorporates a dual-layer refractory architecture—steel frame, high-density firebrick lining (>1000 kg/m³), and high-temperature ceramic insulation—ensuring thermal stability, mechanical integrity, and long-term calibration retention under cyclic thermal loading.
Key Features
- Eight high-velocity embedded burners (four per side) ensure uniform heat distribution across the test cavity (3.0 m × 3.0 m × 1.25 m) and precise adherence to ISO/GT-defined heating curves.
- Dual-stage pressure control system with T-shaped differential pressure probe (±2 Pa accuracy) maintains furnace overpressure at 15 Pa ±5 Pa, critical for simulating real-world compartment fire dynamics per ISO 3008 and GB/T 7633.
- Comprehensive thermocouple array: nine K-type (Class II, 2.0 mm sheathed, 25 mm exposed tip) for furnace average/max temperature monitoring; twenty-nine backside surface thermocouples mounted on 12 mm copper discs with asbestos backing (30 mm × 30 mm × 2 mm), conforming to GB/T 16839.1; plus ambient and internal specimen sensors.
- Integrated MCGS-based HMI with PLC logic control delivers synchronized data acquisition across furnace temperature, backside surface temperature, pressure, airflow, and timing—each logged with timestamped metadata for audit readiness.
- Modular disassembly design enables factory pre-assembly, full functional validation, and transport via standard trailer; field reassembly supported by detailed mechanical and piping schematics.
- Robust loading trolley system (4.3 m height, 3.5 m width, rail-guided mobility) with electric hoist interface (customer-supplied) ensures safe, repeatable positioning of large-format specimens (up to 3.5 m × 3.5 m platform).
Sample Compatibility & Compliance
The TTech-GBT7633 accommodates a broad spectrum of door and shutter configurations—including hinged, pivoted, horizontal/vertical sliding (including linked and sectional types), roller shutters, folding, flap, and wall-integrated movable panels—as defined in Clause 4 of GB/T 7633–2008. All test specimens are evaluated under non-loadbearing conditions, consistent with the scope of ISO 3008 and GB/T 9978.1. The furnace’s physical envelope and instrumentation layout comply with dimensional, sensor placement, and exposure geometry requirements specified in Annex A of GB/T 7633–2008 and Clause 6 of ISO 3008:2007. Pressure, temperature, and timing tolerances meet or exceed the metrological criteria outlined in GB/T 9978.1–2008 Section 7.2 (temperature uniformity), Section 7.3 (pressure control), and Section 7.4 (timing resolution). The system supports GLP-aligned documentation workflows and is compatible with 21 CFR Part 11-compliant electronic signature and audit trail extensions when integrated with validated laboratory information management systems (LIMS).
Software & Data Management
The embedded industrial PC runs MCGS configuration software interfaced with a deterministic PLC controller, providing five dedicated operational screens: main control dashboard, furnace temperature curve monitor, backside surface temperature matrix view, historical data archive, and parameter configuration panel. All measured variables—including 38+ thermocouple channels, differential pressure, airflow, gas flow rate, and elapsed time—are sampled at 1 Hz and stored in binary-encoded, tamper-evident files with SHA-256 checksums. Export formats include CSV (ISO 8601 timestamps, SI units) and PDF test reports compliant with ISO/IEC 17025 clause 7.8.2. Raw data files retain full traceability to sensor ID, calibration certificate number, and operator login session. Optional integration with third-party LIMS or ELN platforms is supported via OPC UA or Modbus TCP protocols.
Applications
This furnace serves as a primary qualification tool for manufacturers, certification bodies (e.g., CNAS-accredited labs), and regulatory authorities conducting type-approval testing of fire-rated door and shutter assemblies for commercial, residential, and industrial buildings. It supports R&D validation of intumescent seals, fire-resistant glazing, core materials (e.g., mineral wool, vermiculite boards), and structural framing alloys under standardized thermal exposure. Applications extend to comparative studies of firestop systems, smoke barrier integrity assessments, and verification of passive fire protection (PFP) system compatibility with dynamic opening mechanisms. In academic research, the system enables investigation of charring kinetics, thermal lag effects in multi-layer composites, and convective-radiative heat transfer coefficients at elevated temperatures.
FAQ
What standards does the TTech-GBT7633 furnace explicitly support?
It is designed and verified for GB/T 7633–2008, ISO 3008:2007, ISO 3008 (all editions), and GB/T 9978.1–2008.
Is the furnace suitable for loadbearing door assemblies?
No—it is configured exclusively for non-loadbearing applications as defined in the referenced standards.
Can the system be upgraded for 21 CFR Part 11 compliance?
Yes; optional audit trail logging, electronic signatures, and user role-based access control modules are available upon request and require IQ/OQ validation support.
What is the maximum specimen size accommodated?
The loading trolley platform measures 3.5 m × 3.5 m, and the furnace aperture allows installation of specimens up to 3.0 m high × 1.25 m deep × unrestricted width (subject to trolley clearance).
Does TESTech provide installation and commissioning support?
Yes—on-site mechanical and pneumatic commissioning, thermocouple calibration verification, and operator training are included in the standard delivery package.
Are spare parts and calibration services available post-warranty?
Yes; TESTech maintains a global spares inventory and offers certified recalibration services traceable to NIM (China National Institute of Metrology) standards.
