Civil engineering & Material Testing equipments

Viral Filtration Efficiency (VFE) Tester YY/T1497

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 pumpOil 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 controlThe flow control of the aerosol generator adopts mass flow control and control standards;
Sampling flow rate of air circuit IHigh speed liquid impact sampler flow rate 28.3L/min, resolution: 0.01L/min (user adjustable)
II gas sampling flow rateHigh speed liquid impact sampler flow rate 28.3L/min Resolution: 0.01L/min (user adjustable)
I. II channel samplingEquipped with an adjustable mass flow controller, with a range of 0-100LPM and an accuracy of 2%; Resolution: 0.01L/min
I gas path pressurePressure sensor range -5000Pa -0, adjustable, repeatability ± 1% FS
II Air circuit pressurePressure sensor range -5000Pa -0, adjustable, repeatability ± 1% FS
Pressure of spray flowmeterPressure gauge range 0-300kPa, adjustable
Negative pressure of aerosol chamberPressure sensor range -5000Pa-0Pa, repeatability ± 1% FS, adjustable negative pressure during normal operation, negative pressure -500-0Pa
working temperature0～50℃
Cabinet negative pressurePressure sensor range -500Pa-0Pa, negative pressure can be adjusted by fan speed
Data storage capacityLarge negative pressure is about -120Pa
Mass flow controllerData can be downloaded through a USB flash drive, with a storage capacity of up to 8GB
Peristaltic pump flow rateThe 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 characteristicsRange range (0.01~3.0) mL/min, variable speed peristaltic pump
Median diameter of aerosol generator massFiltering efficiency for particles above 0.3um ≥ 99.99%
Dual channel high-speed liquid impact samplerAverage particle diameter (3.0 ± 0.3) μ m. Geometric standard deviation ≤ 1.5
Aerosol chamber specifications600mm×80mm×5mm[L*D*T]
Positive control value of samplerNot less than 106 PFU
Ventilation flow rate of negative pressure system800m3/min
Operating room size(L740×W940×D440)mm
Machine diemensionsL1200×W650×H1950)mm
Working power supplyAC 220V，50Hz
Instrument noise＜65dB(A)
Net weight120kg
Overall power consumption＜1500W

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