Room Corner Tester

TESTech Instrument (Suzhou) Technologies is one of the leading manufacturers and suppliers of room corner tester 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.

According to the relevant fire performance standards for building materials in ISO 9705, the TTech room corner tester provides an independent gas analysis control platform, including heat release rate and related testing instruments such as a paramagnetic oxygen sensor, CO2 and CO analyzers, and an incandescent-light smoke density system.

The room corner tester, together with the cone calorimeter and the SBI test method based on the oxygen consumption principle, is one of the core fire performance test methods for building and decorative materials.

This method simulates a room-corner fire scenario as the standard test condition and requires the test specimen to be installed exactly according to its actual application. The test results are therefore only applicable to the specific installation method of the sample.

Because of the relatively complex requirements for sample quantity and test conditions, this method is commonly used for fire science research and for evaluating materials whose burning characteristics cannot be properly assessed by small-scale tests.

In the room corner fire test, the specimen is installed on the interior walls of the room, without installation on the ceiling, and a propane burner is used as the radiation source. Parameters measured include heat release rate, temperature, heat release, flashover time, CO2, and CO, among which heat release rate and flashover time are the most important.

• The interior of the test room is constructed from refractory material with density of 700 kg/m3 and fire performance conforming to Class A1 fireproof materials.
• Internal room dimensions: 3.6 m x 2.4 m x 2.4 m.
• Fire-resistant room construction; stainless steel ladder installed outside the room for convenient maintenance of the smoke duct test system.
• The door is located in the centre of one 2.4 m x 2.4 m wall. Other walls, floor, and ceiling have no ventilation openings. Door size: 0.8 m (W) x 2.0 m (H).
• The system provides automatic ignition and automatic recording of relevant test data.
• 10 kV spark generator with safety shut-off device; ignition timer supports segmented timing, display resolution 1 s, and timing error less than 1 s/h; calibration burner flow meter accuracy within +/- 2% of reading.
• Stainless steel propane sandbox burner filled with porous inert material; gas flow controlled by imported mass flow meter with accuracy less than 2%.
• Automatic ignition, automatic timing, and automatic gas shut-off flameout.
• Fire extinguishing and drainage system design. Bipolar gas flow valve control system avoids gas leakage caused by solenoid valve failure and reduces explosion risk.
• Standard 304 stainless steel sandbox propane burner, resistant to high-temperature oxidation and corrosion.
• Stainless steel smoke collection hood and exhaust duct, attractive and corrosion-resistant.
• Variable-frequency fan plus imported inverter for precise wind speed control; exhaust capacity not less than 3.5 m3/s.
• Wind speed probe made of 316 stainless steel, length 32 mm, inner diameter phi14 mm.
• Stainless steel smoke collection hood 3 m x 3 m to ensure no smoke leakage.
• Adjustable-speed exhaust fan to ensure the hood can collect all smoke.
• Taiwan Delta inverter plus variable-frequency fan controlling exhaust rate at (0.6 +/- 0.05) m3/s, with step response time less than 1 s.

• High-precision patented sampling system ensures stable sampling gas entering the gas analyzer without impurity interference, improving analysis accuracy.
• Sampling probe made of inert material with dense fine holes for detecting oxygen concentration and CO and CO2 concentrations; over-compressed gas can automatically purge the sampling probe.
• Includes particle filter and three-stage filtration system with filtration precision of 0.3 um.
• Cold trap uses compressor-based refrigeration system, controlling gas sampling temperature at 0 to 5 degrees C to protect analyzer stability and service life.
• German imported suction pump provides gas sampling power, flow rate 30 L/min.
• Drying cylinder separately dries and removes impurities from oxygen and nitrogen dioxide analysis gas paths.
• Exhaust hood made of stainless steel, stainless steel duct diameter 400 mm, customizable according to customer requirements.
• High-precision ball valve for opening and shutting the gas path, with automatic gas cut-off.

• Imported-brand paramagnetic oxygen analyzer not lower than imported brand standard; O2 measurement range 0 to 25%, linear deviation less than 0.5% FS, repeatability less than 50 ppm O2, analyzer response time T90 less than 3.5 s.
• Imported-brand infrared CO2 analyzer not lower than imported brand standard; CO2 measurement range 0 to 10%, linear deviation less than or equal to 1% FS, repeatability less than or equal to 0.5% FS, analyzer response time T90 less than 2.5 s.
• Imported-brand infrared CO analyzer not lower than imported brand standard; CO measurement range 0 to 1%, linear deviation less than or equal to 1% FS, repeatability less than or equal to 0.5% FS, analyzer response time T90 less than 2.5 s.
• USA imported photoelectric receiver: wavelength range 350 to 1100 nm, peak response 0.65 A/W, gain adjustment 70 dB.
• Transmittance calibration mode provides one-key five-level automatic calibration with imported optical filters, without manual filter replacement.
• Lens focuses light into a 20 mm parallel beam; d/f less than 0.04; chromatic standard function accuracy +/- 5%; output linearity within 3% of transmittance or within 1% of absolute transmittance.
• The response time for 90% system output is not more than 3 s; system time recording accuracy is 0.1 s; recording interval can be set, with minimum 1 s.
• USA imported Omega thermocouple, accuracy 0.1 degrees C, fast temperature collection, long service life.
• USA imported micro differential pressure sensor, range 0 to 2000 Pa, accuracy +/- 1% FS, hysteresis +/- 0.1% FS, maximum linear pressure 69 kPa, resolution 1 Pa, and response time for 90% output up to 1 s.
• USA imported Metherm thermopile heat flux meter for setting the radiation level on the sample surface, equipped with water cooling system; design range 0 to 100 kW/m2, accuracy +/- 3%, repeatability +/- 0.5%.
• Burner calibration system uses propane with purity above 95% to calibrate the heat release rate measured by the instrument. Imported propane mass flow meter precisely controls propane flow for burner heat output calibration.
• Water cooling system provided for cooling the imported heat flux meter during operation.
• Imported mass flow meter controls gas flow with accuracy 2%; heat output is 100 kW for the first 10 minutes, and if flashover does not occur, burner heat output becomes 300 kW after 10 minutes.

• Large-scale heat release test calibration system using a propane calibration system, capable of calibrating up to 5 MW heat release.
• One-key five-level optical system calibration at 0%, 25%, 50%, 75%, and 100%.
• Wind speed calibration system provided.

• Labview control system dedicated to laboratory instruments, with user-friendly interface, easy operation, and accurate control.
• Functions include displaying instrument status, calibrating the instrument and storing calibration results, collecting test data, calculating required parameters, displaying results according to standard requirements, and averaging multiple test values.
• The host computer communicates with the PLC through an RS485 interface communication module for data transmission and motion control.
• Accurate and reliable test results, good repeatability, and error not more than +/- 2%.
• Signal acquisition processing module is linked with the air volume circuit control module; PLC logic output intelligently adjusts preset wind speed; mechanical rotation module is linked to PLC I/O ports to control the closing state of the rotation mechanism.
• Labview operation software provides strong data interaction functions and is more suitable for scientific research analysis.
• Software modules can independently analyze process curves of different test data.
• By revising raw data through parameter settings, differences in test results for the same specimen can be compared to help analyze test influencing factors.
• Test report supports switching analysis between full-size charts and thumbnail charts.
• Independent delay correction can be applied to O2, CO, and CO2 for deeper analysis of test results.
• Freely selectable output curves: O2, CO2, CO, Heatflux, MFM, DPT, PD.
• Time delay influence analysis on test results.
• Monitoring data are displayed in real-time digital and curve form, including temperature, humidity, flow, pressure, transmittance, and O2/CO2 concentration.
• Real-time calculation, analysis, and display of process parameters such as heat release rate, smoke production rate, oxygen consumption, CO2 generation, CO generation, mass loss, radiant heat, wind speed, and total heat release.
• Optical system calibration uses one-key five-level automatic calibration at 0%, 25%, 50%, 79%, and 100%, with automatic calibration report generation.
• The test report module supports preview, editing, and report generation.

• Floor centre heat flux versus time curve.
• Volume flow in the exhaust duct versus time curve.
• Heat release rate versus time curve.
• CO production versus time curve.
• CO2 production versus time curve.
• Smoke concentration generation versus time curve.
• Video monitoring of fire development condition.
• Calibration results.
• Whether flashover occurs and flashover time.

• Specimen surface temperature versus time curve.
• Vertical temperature distribution at the doorway versus time curve.
• Mass flow at the doorway versus time curve.
• Convective heat flux at the doorway versus time curve.
• Hydrocarbon generation versus time curve.
• Nitrogen oxide generation versus time curve.
• Cyanide generation versus time curve.

• Imported infrared thermal imaging system; real-time display of flame temperature distribution in the room on the computer screen.

• CO (0.8%) / CO2 (8%), compressed gas, vacuum cleaner, computer, propane gas, heptane gas, and nitrogen gas.

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