• Model NO.：DR251XL
• Testing Standard：En 1822 En 149 En 14683 Niosh 42 CFR Part 84
• Working Station：One Station
• Testing Method：Photometric Method
• Efficiency Detection：Tsi High-Precision Photometer
• Testing Material：Oil and Salt
• Aerosol Generation：1
• Resistance Detection：Yes
• Test Flow Range：15L,Min ~ 100L,Min, Accuracy 2%
• Airflow Cross-Sectional Area：100cm²
• Resistance Test Range：0 ~ 1000PA, Resolution 0.1PA
• Filter Efficiency Test Range：0 ~ 99.999%, Resolution 0.001%
• Test Particle Size：0.3μm
• Fog Dust Source：Nac1, Paraffin or Corn Oil
• Fog Gas Source：Dry and Stable Compressed Air
• Transport Package：Carton
• Specification：1000mm× 600mm× 1600mm
• Trademark：Darong
• Origin：China
• HS Code：9024800000
• Production Capacity：2000PCS

Basic Info.

Model NO. DR251XL Testing Standard En 1822 En 149 En 14683 Niosh 42 CFR Part 84 Working Station One Station Testing Method Photometric Method Efficiency Detection Tsi High-Precision Photometer Testing Material Oil and Salt Aerosol Generation 1 Resistance Detection Yes Test Flow Range 15L/Min ~ 100L/Min, Accuracy 2% Airflow Cross-Sectional Area 100cm² Resistance Test Range 0 ~ 1000PA, Resolution 0.1PA Filter Efficiency Test Range 0 ~ 99.999%, Resolution 0.001% Test Particle Size 0.3μm Fog Dust Source Nac1, Paraffin or Corn Oil Fog Gas Source Dry and Stable Compressed Air Transport Package Carton Specification 1000mm× 600mm× 1600mm Trademark Darong Origin China HS Code 9024800000 Production Capacity 2000PCS

Product Description

DR251XL Particles Filtration Efficiency Tester
(Photometric method)

[Scope of application] It is suitable for rapid, accurate and stable testing of the particulate filtering efficiency of various medical and daily protective masks and respirators.
[Relevant standards]
Technical requirements for medical protective masks 5.4 Filtration efficiency
Medical surgical masks 5.6.2 Particle filtration efficiency
GB/T 32610-2016 Technical specification for respirators for daily use Appendix A Test method for filtration efficiency
GB 2626-2019 Respiratory protection Self-priming filter anti-particulate respirator 6.3 filtration efficiency
Technical requirements for medical disposable protective clothing 5.7 Filtration efficiency
EN 1822-3:2012 EN 149-2001 IESTs-RP-CC021.1 NIOSH 42 CFR Part 84, etc
[Instrument characteristics]
1. Efficiency detection: the USE of American TSI high-precision photometer, detection of upstream and downstream particle concentration, to ensure the accuracy and stability of sampling;
2. Flow detection: The system test flow is mainly provided by dry and clean compressed air externally. Internal installation of stable pressure and flow device, to ensure the stability of flow detection, and the use of automatic control system is simple, fast and stable;
3. Aerosol generation: Using Collision multi-nozzle design, salt and oil test can be carried out on the same instrument, to ensure the fog concentration adjustment fast and stable
(it is not recommended to frequently replace the fog particles, in order to obtain a longer maintenance cycle);
4. Test results; Equipped with 7-inch touch screen, detection results are directly displayed on the interface, and users can choose to directly print or save data;
5. Data port: external memory card, can export data, don't worry about data loss;
6. Resistance detection: the resistance pressure difference of filter material will be obtained by the static pressure ring of its upstream and downstream test bin, and the use of high precision imported brand pressure transmitter, to ensure the accuracy and stability of pressure difference;
7. Simple operation: users only need to place the sample in the fixture, press the button, adjust the test flow after the system will automatically test resistance and efficiency through the controller, the whole process is simple, fast and efficient.
[Technical parameters]
1. The test flow range :15L/min ~ 100L/min, accuracy 2%
2. Cross sectional area of air flow is 100cm² (optional KN95 mask fixture)
3. Resistance test range :(0 ~ 1000)Pa, accuracy up to 0.1pa
4. Filter efficiency test range :(0 ~ 99.999)%, resolution 0.001%
5. Test quality median particle size :0.3um
6. Aerosol: sodium chloride (recommended), concentration: salt 10mg/m3 ~ 35mg/m3; DOP, PSL, DEHS[counting median diameter of (0.185±0.020)µm, geometric deviation not greater than 1.60, concentration of (50 ~ 200)mg/m3]
7. Aerosol concentration: 0.001mg/m3 ~ 200mg/m3
8. Fog dust source: NaC1 (recommended), DEHS, etc
9. Test time: 5s was tested separately for resistance, 70s for efficiency and resistance
10. Structure composition: particle generator, flow detection device, concentration detection device
11. The number of samples: 1 road
12. Working air source: ≥ 0.5mpa, 200L/min
11. Power supply :AC220V±10% 50Hz 1kW
12. Dimensions :(700mm×700mm×1600mm) (length × width × height)
13. Weight: about 100kg