LS-921 ASTM D2843 Smoke Density Tester For Building Materials

1. 1. Scope of application:

Touch-screen computer dual control smoke density tester for building materials was developed according to the technical conditions stipulated in GB/ t8627-2007 “test methods for smoke density of burning or decomposition of building materials”, which is applicable to the measurement of static smoke production from burning of building materials, products and other materials.

2. Cechy produktu
3. Dual control mode, can control the operation on the touch screen, can also be controlled on the computer, the operation mode can be arbitrarily switched!
4. A device can operate several computers at the same time, several computers can be online at the same time, and LAN sharing can be realized!
5. The main and auxiliary burners can rotate automatically and locate accurately.
6. Independently developed the control program, which can meet all kinds of operations, records, real-time curves and results calculation in the test.
7. Relevant technical parameters
8. For the maximum smoke density (MSD) and smoke density grade (SDR) of the specimen: 0-100% continuously measurable and automatically calculated;
9. Calibration error with standard filter shall not be more than 3%;Each device is equipped with three standard filters, which are representative of the data of light source calibration
10. Working pressure of Bunsen burner (210 + 5) KPa;
11. The Bunsen burner applied flame to the sample for 4min;
12. Burning lamp: in the Bunsen burner and a length of 260 mm, the nozzle diameter of 0.13 mm, with smoke box into a 45 ° Angle;
13. Photoelectric system: the light source is a bulb with 15W power and 6V working voltage;
14. Exhaust air system: this machine is equipped with powerful exhaust fan, which can discharge exhaust gas out of the outdoor after the test;
15. Smoke density measurement range: 0~100%;
16. Smoke density measurement accuracy: ±3%;
17. Receiver: silicon photocell, light transmittance 0% is no light, light transmittance 100% is no shade completely through;
18. Working pressure of main burner: 276KPa (nastawny);
19. Automatic timing, automatic ignition, automatic smoke extraction;Optical flux can be divided into stages for linear correction test dataA more accurate;

13. Touch the screen:
14. Rozmiar: 5 “effective display size 11cm long and 6.28cm wide;
15. Rozkład: 800*480
16. Interfejs komunikacyjny RS232, 3.3v CMOS lub TTL, tryb portu szeregowego
17. Pojemność przechowywania :1G
18. Czysty sprzętowy wyświetlacz napędu FPGA, “zero” czas uruchamiania, moc może działać
19. Przyjęto architekturę M3 + FPGA. M3 odpowiada za analizę instrukcji, a FPGA koncentruje się na wyświetlaczu TFT
20. Główny kontroler przyjmuje energooszczędny procesor i automatycznie przechodzi w tryb oszczędzania energii
21. Źródło gazu: 95% propane gas, or gas of the same purity (customer provided);
22. Długość * szerokość * wysokość 740 *500* wysokość 900 (mm)

4. Warunki pracy:
5. Temperatura otoczenia: 0 ℃ and 40 ℃;
6. Wilgotność względna: mniej niż 85%
7. Napięcie zasilania i moc: 220V + / – 10%, 50HZ, 100W.;
8. Gas pressure: 0-0.3mpa (nastawny);
9. Environment and test requirements: avoid direct irradiation or reflection of strong light on the instrument during operation;After the test for 90min, the gas source should be turned off to cool the instrument for 15min.
10. Ambient air flow: there is no forced air flow phenomenon when working;
11. The instrument should be placed in the fume hood for testing;
12. Instrument structure:

Divided into smoke box and control two parts;

Smoke box: on the left and right sides of the smoke box panel, there are power switch, safety sign switch (back light switch), gas regulator, in addition to the control exhaust fan switch (fan switch).

Vi. Norma projektowa: GB/ t8627-2007 smoke density test method for combustion or decomposition of building materials

Standard: GB/T8627 ASTM D2843