- 說明
- 規格
- 優點
PMFT 1000 使用比標準嚴格的條件測試口罩，並額外準確分析了 SARS-CoV-2 的過濾口罩效率（粒徑約為 120 奈米至 160 奈米）。8個粒徑通道可支持100 nm和180 nm測試。
此外，PMFT 1000 符合CCF（Covid 認證過濾器）質量密封規定的口罩要求 。可針對GB 2626、EN143、EN149、ASTM2299-1和EN13274-7等法規做測試。
PMFT 1000 配備氣溶膠產生器，用於測量油和鹽的過濾效率。提供用於快速品質測試（短期測試）或根據標準法規進行測試（暴露測試）的測量程序。
因此，即使對於沒有經驗的用戶，操作和測量結果的自動操作也很容易。
使用高精度 Promo 1000 氣溶膠分析儀測量總滲透率和通過粒徑的滲透率。
根據標準測試氣溶膠的粒徑分佈如下：
EN 149: 42 CFR 84 / GB 2626:
Oil: Media diameter 290 nm | Geom. standard deviation 1.85 Oil: Media diameter 200 nm | Geom. standard deviation 1.6
Salt: Media diameter 70 nm | Geom. standard deviation 2.5 Salt: Media diameter 55 nm | Geom. standard deviation 1.86
基於通過粒徑測量顆粒滲透率，PMFT 還可用於查看根據 En 13274-7 的粒徑分佈公差作為最小值/最大值。滲透值。此外，可以與其他製造商進行比較（選項）
The comparison with other standards (42CFR84/NIOSH) is also easy with the 42CFR84 upgrade KIT.
Overview of standards for face mask penetration testing
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EN 149
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EN 13274-7
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EN 13274-7
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GB 2626
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GB 2626
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42 CFR 84
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42 CFR 84
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|---|---|---|---|---|---|---|---|
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Aerosol
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see EN 13274-7
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NaCl
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PaO
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NaCl
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PaO/DOP
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NaCl
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DOP
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Mean diameter
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see EN 13274-7
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0.06 – 0.1 µm
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0.29 – 0.45 µm
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0.055 – 0.095 µm
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0.165 – 0.205 µm
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0.055 – 0.095 µm
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0.165 – 0.205 µm
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|
Standard deviation
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see EN 13274-7
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2 – 3
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1.6 – 2.2
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< 1.86 (by additional software module)
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< 1.6 (by additional software module)
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< 1.86 (by additional software module)
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< 1.6 (by additional software module)
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Concentration
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see EN 13274-7
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4 –12 mg/m³
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15 – 25 mg/m³
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< 200 mg/m³
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(50 mg/m³) < 200 mg/m³
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< 200 mg/m³
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< 200 mg/m³
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Discharge
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-
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-
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-
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required
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required
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required
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required
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Air flow
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see EN 13274-7
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95 l/min
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95 l/min
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85 ± 4 l/min
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85 ± 4 l/min
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85 ± 4 l/min
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85 ± 4.25 l/min
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Temperature
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see EN 13274-7
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22 ± 3 °C
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-
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25 ± 5 °C
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25 ± 5 °C
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25 ± 5 °C
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25 ± 5 °C
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Rel. humidity
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see EN 13274-7
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< 40 %
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-
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20 – 40 % (by compressed air) |
-
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20 – 40 % (by compressed air) |
20 – 40 % (by compressed air) |
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Measurement device
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see EN 13274-7
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Sodium flame photometer |
Light scattering photometer |
particle detector |
particle detector |
Light scattering photometer |
Light scattering photometer |
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Measuring time
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see EN 13274-7
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30 s
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30 s
|
lowest eff. during loading |
lowest eff. during loading |
lowest eff. during loading |
lowest eff. during loading |
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Pause time
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see EN 13274-7
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180 s
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180 s
|
lowest eff. during loading |
lowest eff. during loading |
lowest eff. during loading |
lowest eff. during loading |
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Exposition
|
120 mg
|
120 mg
|
120 mg
|
200 ± 5 mg |
200 ± 5 mg |
200 ± 5 mg |
200 ± 5 mg |
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PMFT remarks
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O.K. |
O.K. |
O.K. |
O.K. with upgrade KIT |
O.K. with upgrade KIT |
O.K. with upgrade KIT |
O.K. with upgrade KIT |
