50Hz Flammability Testing Equipment UL910/Nfpa 262 Steiner Horizontal Tunnel Furnace

UL910/NFPA 262 Steiner horizontal tunnel furnace
Standards:UL910,NFPA262
Installation requirements

Suspension Hardware
1.Two station lift at the same time. Computer control ensures smooth lifting.
2.Suspension Hardware can be moved up and down,left and right which is convenient for sample installation and commissioning.
3.Equipped with safety protection platform, convenient for sample installation and commissioning.

Combustion system
1.The 10KV spark igniter is equipped with a safety cease-fire device.The igniter is automatically positioned through the lever connected to the closing mechanism.
2.The combustion heat of the burner is automatically controlled by the gas flow system. The reading accuracy is 1%.
3.The heat output of the burner can be automatically controlled by computer. Equipped with Japanese mass flow controller.
4.Gas flow valve control system to avoid leakage caused by electromagnetic valve failure, resulting in explosion risk.
5.Frequency fan automatically controls wind speed inside the flue, fan power 3KW, voltage 380V
6.Gas pressure gauge and pressure regulating valve to control gas pressure accurately.
7.Imported gas flow control valve to control gas flow accurately

Test System
1.Smoke Density Test:smoke density is measured by incandescent light system.Color temperature 2900±100K;The current fluctuation range is + 0.5%;Linear output of smoke density value;With time compensation function.
2.The lens converts light into 20mm parallel beams; d/f < 0.04.
3.Detector:The spectral distribution corresponds to CIE;The accuracy of the chromatic standard function is + 5%;Thelinearity of output is less than 3% of transmittance or 1% of absolute transmittance.;The response time of system 90% is no more than 3S
4.The thermocouple is K type armored thermocouple, 0.5mm diameter; the temperature accuracy is 0.5 degrees.
5.Pressure sensor range 0~100pa; accuracy is + 2pad;The response time of pressure sensor 90% is 1s.
6.Environmental pressure accuracy of + 200Pa
7.System record time is at least 3S
8.System time recording accuracy 0.1s
9.Computer real-time display of smoke density generation curve
10.Option:The system is equipped with a camera system to observe the experimental process and record the characteristics of the burner residue after the implementation and combustion of the sample.

Smoke Density Test System
1.Light source: 0.5W helium neon laser imported from the USA
2.Photoelectric receiver imported from the USA:wavelength range 350-1100nm;Peak value corresponding: 0.65A/W;Maximum output current: 100mA;Gain control 70dB.
3.The Thorlabs filters (imported from the USA) to make smoke density testing more accurate.
4.Steiner Tunnel Combustion Chamber is equipped with compensation photoelectric detection system, effectively preventing light source fluctuation interference.

Wind speed control system
Pipe exhaust capacity:
1.Delta inverter accurately controls flue gas velocity.
2.Smoke exhausting ability: Measurement of wind pressure and wind speed with pitot tube and imported micro pressure transmitter.
3.Differential pressure transmitter:Measurement range 0~2000pa; accuracy: + 1%FS;Hysteresis + 0.1%FS; maximum linear pressure 69Kpa;The response time of pressure sensor 90% is 1S.
4.Smoke exhaust capacity: 8000m³/H
5.The wind speed signal is automatically fed back to achieve automatic wind speed closed-loop control, with more stable wind speed and strong anti-interference ability.
Wind speed test of combustion chamber
1.Set the speed of the Steiner Tunnel Combustion Chamber in the computer system, and monitor the wind speed in real time, then output the wind speed curve.
2.The speed range of the combustion chamber is 0~8m/s, and the wind speed measurement resolution is 0.001m/s
3.The detection range is 0 ~ 250Pa, the accuracy is ± 0.5Pa, and the system indication pressure test accuracy is ± 2Pa.
Temperature control collection
1.Steiner Tunnel Furnace Chamber Apparatus is equipped with 3 OMEGA K armored thermocouples to monitor the temperature change of the exhaust pipe, the accuracy is 0.1 C.
2.The parameters of the thermocouple:Less than 0.25mm wire diameter; temperature accuracy 0.1 degrees.
3.The temperature test range is 0 C ~1300 C.
Data acquisition and control system
1.Labview control system which is stable and reliable system;
2.Standard control cabinet, equipped with Dell computer, 19 "LCD display;
3.The system has 16 bits high precision data acquisition module.
4.System time recording accuracy 0.1s
5.Achieve real-time data monitoring and accurate recording;
6.Real time display of system operation status; sound and light alarm under fault condition;
7.Control cabinet can connect printer and print report.
8.With Sound alarm and alarm display function.
9.The control cabinet can be connected with computer.
10.PLC control system with functions of automatic ignition, ignition failure dete
11.The software interface and control panel interact to control the operation.

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