Internal laboratory dimensions: L (3.6 ± 0.2m) × W (2.4 ± 0.2m) × H (2.4 ± 0.1m); constructed from brick-concrete, steel structures, or other Class A1/A2 building materials; door dimensions: 0.8m × 2.0m.
The laboratory roof features load-bearing capacity, allowing for the safe installation of exhaust ducts and fans, as well as providing space for personnel to perform operations and maintenance; includes guardrails, stairs, and a fan mounting platform.
Equipped with a square igniter (250mm ± 10mm × 250mm ± 10mm) made of stainless steel tubing to serve as the ignition source.
Uses a silicon nitride igniter for automatic, stable, and reliable ignition.
High-precision Mass Flow Controller (MFC) regulates gas flow; the safety piping system includes check valves, solenoid valves, and ball valves to prevent flashback and enable manual emergency shut-off, ensuring safety.
Stainless steel smoke collection hood (3m × 3m) installed above the laboratory doorway; stainless steel exhaust duct (400mm diameter) features flow straighteners at both the inlet and outlet to ensure uniform gas flow.
Equipped with a high-temperature resistant fan capable of an exhaust rate of at least 3.5 m³/s; the fan speed is adjustable to ensure the collection hood captures all smoke; the flue gas flow meter features an accuracy of ±5% or better and a response time of no more than 1 second.
Equipped with four imported thermocouples for monitoring temperature within the exhaust duct, with a measurement accuracy of ±0.1°C.
Thermocouples are connected to the duct via compression fittings, facilitating easy installation, removal, and maintenance.
Equipped with a stainless steel bidirectional probe to measure wind pressure within the duct; the probe ends face the upstream and downstream sides of the airflow, respectively.
Equipped with an imported micro-differential pressure transmitter to convert and output pressure signals.
Equipped with an imported light source (2900K color temperature), a lens assembly, and a focal length adjustment mechanism to convert the light source into a parallel beam passing through the duct.
Utilizes an imported silicon photodetector to convert optical signal variations into electrical signals for output, ensuring stable and accurate data.
Equipped with standard optical filters for calibrating the optical path system.
Features a built-in stainless steel sampling probe within the sampling duct, secured and sealed via a flange or threaded connection; a row of small sampling holes is arranged along the center of one side of the probe, facing away from the airflow direction to prevent clogging by combustion dust.
The sampling probe connects via PP tubing to a sampling pump, which draws sample gas and delivers it to the gas pretreatment system; the pump operates at a flow rate of 36 L/min, a working pressure of 0.7 MPa (7 kgf/cm²), and a working vacuum of -93.1 kPa.
The gas pretreatmentsystem comprises filtration, cooling, dehumidification/drying, and gas regulation subsystems.
Equipped with a three-stage filtration system: the first stage uses a cylindrical coarse filter to remove large particles and prevent clogging at pipes and joints (replaceable filter element); the second stage uses a cup-style protective filter to remove particles larger than 0.5 μm (replaceable filter element); the third stage uses a membrane filter to remove particles larger than 0.2 μm.
The cooling system utilizes a condenser and a peristaltic pump to remove moisture via condensation. The condenser features dual-circuit cooling; the dew point remains stable at approximately 0.1°C, and the outlet gas temperature is around 5°C. The peristaltic pump outlet is equipped with a condensate collection box containing an internal sponge.
The dehumidification and drying system utilizes an air filtration tube packed with DRIERITE-brand anhydrous calcium sulfate to remove moisture from the sample gas, ensuring the gas entering the analyzer is dry. The anhydrous calcium sulfate changes color upon absorbing moisture, making it easy to monitor and replace.
Analysis/Calibration Switching Unit: The analyzer cabinet panel features quick-connect ports for sample gas and calibration gas inlets. It employs highly reliable ball valves and three-way switching valves to facilitate on-site calibration and maintenance.
Rapid Bypass: A Dwyer rotameter is included for sample gas bypass and venting. The panel-mounted flow meter ensures a sample gas flow rate of 3.5 L/min into the analyzer.
Pressure Regulation Device: A pressure-reducing valve is used for regulation, with an adjustable pressure range of 0–0.4 MPa.
Professional HRR (Heat Release Rate) gas analyzer, covering O2, CO2, and CO:
Supports multiple transmission methods, including analog output and Modbus RTU.
Controlled by a PC with professional software to guide the test process; user-friendly, safe, and reliable.
Automatically measures and calculates material combustion parameters, including Heat Release Rate (HRR), Smoke Production Rate (SPR), oxygen consumption, and O2/CO2 generation; supports comprehensive data acquisition and storage, as well as real-time visual monitoring and test data archiving.
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