Complaint
MU3074 cable or optical cable combustion smoke density testing machine
Comply with Part 1 "Test Equipment" and Part 2 "Test Procedures and Requirements" of GB/T17651.1-2 and IEC61034-1-2 "Measurement of Smoke Density of Electric or Optical Cables Burning under Specific Conditions". The measurement of smoke density is an important aspect of evaluating the combustion characteristics of cables or optical cables, which is related to the evacuation of personnel and the determination of whether to approach and extinguish fires. This instrument is mainly used to measure the smoke concentration released by cables and optical cables during combustion under specific conditions, and to verify the smoke density generated. Under flame or flameless combustion conditions, transmittance is used as a judgment method to compare different cables or optical cables under specific conditions.
This instrument involves professional knowledge in mechanical, optical, and electronic fields. It is an electromechanical integrated product with advantages such as reasonable structure, stable performance, and easy operation; Windows XP operating interface, LabVIEW style, and comprehensive security mechanism. During the testing period, real-time display of measurement results and dynamic drawing of perfect curves (displaying transmittance vs. time curves) can be performed. The data can be permanently saved, accessed, and printed out, and reports can be directly printed.
Measurement software: It operates on the Windows XP+VB6.0 operating interface and can test the main data such as smoke optical density, specific optical density, smoke generation rate, maximum smoke generation rate, average smoke density, etc. It also has operation interfaces such as calibration, editing, testing, and parameter adjustment. The program adopts computer automatic control, collection, recording, and result settlement.The smoke density optical measurement system for burning cables or optical cables under specific conditions consists of a light source, a silicon photocell, a light source receiver, and a computer system. The light generated by the light source passes through 3m × 3m × A 3m smoke density laboratory forms a uniform beam with a diameter of 1.5m ± 0.1m on the wall opposite the light source, and a photocell installed at the center of the beam detects the beam intensity from the light source. When a large amount of smoke is generated in the combustion chamber due to the burning of cables or optical cables, the smoke absorbs a part of the photoelectricity, and the beam intensity of the silicon photocell is weakened. By processing the data through a computer system, the linear response transmittance It can be calculated relative to the initial 100%.
The entire instrument consists of a sealed test chamber, a photometer measurement system, an alcohol tray, a combustion system, an igniter, a test box, a cable support, a temperature measuring instrument, and smoke density testing software; The circuit is developed using a microcontroller, with high technical content and stable performance. This instrument is suitable for all cables and is widely used by production factories and research and testing units in the wire and cable industry. The test chamber is a test cube with a volume of 27m3.
1. Combustion chamber: Internal size: 3M × 3M × 3M has a total of 27 cubic meters. It can be a brick wall structure or a steel plate structure, chosen by the customer.
2. Optical measuring device:
A. Imported quartz halogen light source: nominal power 100W, nominal voltage 12V, nominal light return: 2000-3000Lm.
B. Receiver: It is a silicon photocell, with a transmittance of 0% indicating no light passing through, and a transmittance of 100% indicating complete light passing through without obstruction.
3. Standard ignition source:
A. The ignition source is 1.0L alcohol.
B. Alcohol tray: stainless steel with a bottom surface of 210 × 110mm, top surface 240 × 140mm, height 80mm.
4. Smoke mixing: Use a desktop fan to evenly distribute smoke in the combustion chamber.
5. Blank test: burn the Alcohol burner to make the temperature of the combustion chamber reach 25 ± 5 ºC.
6. Temperature measuring device: A temperature sensor is installed at a height of 1.5M from the ground and 0.5M from the wall on the inside of the door.
7. Including a set of transmittance measurement software that can output curves and reports.
8. Including one computer (provided by the printer).
9. Power: 220V, 4KW. (Should indicate the total power of the device).
10. (Smoke density) 0-924 6-speed automatic shift.
11. Measurement range: 0.0001-100%;
12. Measurement accuracy: ± 3%;
13. Working voltage: 200-240V 50Hz;
14. Environmental temperature: room temperature -40 ºC.
15. Relative temperature: ≤ 85%;
16. Working environment: When the instrument is running, it should avoid direct sunlight and there should be no forced air flow.
5. Other parameters and introduction
1. The front door is equipped with a window and an opaque sunshade that can block inspection activities.
2. The bottom of the square box is equipped with an automatic ignition device, and the top is equipped with an internal pressure regulating device.
3. Light source: 12V incandescent lamp with a wavelength of 400-750nm.
4. Receiver: It is a silicon photocell, with a transmittance of 0% indicating no light passing through, and a transmittance of 100% indicating complete light passing through without obstruction.
5. Combustion system: composed of a regulator valve, filter, regulating valve flow meter, and burner.
6. Burner: composed of an igniter and an alcohol disk, placed in the center of the sample.
6. Main configuration
1. Desktop computer (including display screen) 1 unit
2. Opaque template 1 piece
3. Spare light bulb 2 pieces
4. instruction 1 copy
5. Certificate of conformity 1 sheet
6. Calibration lenses 2 pieces
7. Printer 1 unit
8. Analysis software 1 set
9. Active shutter 1 piece
