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Model: FH-VFE01
Standards: YY/T1497
The Virus /Viral Filtration Efficiency (VFE) tester is specially used for testing the virus filtration efficiency (VFE) of medical protective materials. Adopting the Phi-X1 74 method indicated in YY T1497.
Specifications of Virus filtration efficiency (VFE) tester
| Vacuum pump | Oil free rotary vane vacuum pump, with a large flow rate of up to 57LPM; Equipped with silencer, stable airflow, negative pressure -900pa |
| Aerosol generator flow control | The flow control of the aerosol generator adopts mass flow control and control standards; |
| Sampling flow rate of air circuit I | High speed liquid impact sampler flow rate 28.3L/min, resolution: 0.01L/min (user adjustable) |
| II gas sampling flow rate | High speed liquid impact sampler flow rate 28.3L/min Resolution: 0.01L/min (user adjustable) |
| I. II channel sampling | Equipped with an adjustable mass flow controller, with a range of 0-100LPM and an accuracy of 2%; Resolution: 0.01L/min |
| I gas path pressure | Pressure sensor range -5000Pa -0, adjustable, repeatability ± 1% FS |
| II Air circuit pressure | Pressure sensor range -5000Pa -0, adjustable, repeatability ± 1% FS |
| Pressure of spray flowmeter | Pressure gauge range 0-300kPa, adjustable |
| Negative pressure of aerosol chamber | Pressure sensor range -5000Pa-0Pa, repeatability ± 1% FS, adjustable negative pressure during normal operation, negative pressure -500-0Pa |
| working temperature | 0～50℃ |
| Cabinet negative pressure | Pressure sensor range -500Pa-0Pa, negative pressure can be adjusted by fan speed |
| Data storage capacity | Large negative pressure is about -120Pa |
| Mass flow controller | Data can be downloaded through a USB flash drive, with a storage capacity of up to 8GB |
| Peristaltic pump flow rate | The range of the mass flow controller is adjustable from 0 to 20L/min, with an accuracy of 2% and a resolution of 0.01L/min |
| Air filter characteristics | Range range (0.01~3.0) mL/min, variable speed peristaltic pump |
| Median diameter of aerosol generator mass | Filtering efficiency for particles above 0.3um ≥ 99.99% |
| Dual channel high-speed liquid impact sampler | Average particle diameter (3.0 ± 0.3) μ m. Geometric standard deviation ≤ 1.5 |
| Aerosol chamber specifications | 600mm×80mm×5mm[L*D*T] |
| Positive control value of sampler | Not less than 106 PFU |
| Ventilation flow rate of negative pressure system | 800m3/min |
| Operating room size | (L740×W940×D440)mm |
| Machine diemensions | L1200×W650×H1950)mm |
| Working power supply | AC 220V，50Hz |
| Instrument noise | ＜65dB(A) |
| Net weight | 120kg |
| Overall power consumption | ＜1500W |
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