EN149 Mask Bacteria Filtration Efficiency Tester ，BFE PEE Bacteria Testing Machine

This instrument is designed to measure the inspiratory resistance and expiratory resistance of respirators and masks under specified conditions. It is applicable for national labor protection supplies inspection agencies, mask manufacturers, and related inspection departments for testing ordinary masks, dust masks, medical masks, and anti-fog mask products.

• Comprises an adjustable flow rate air source, standard human head mold, dual intubation systems for inhalation and exhalation, and respiratory resistance measurement system
• High-sensitivity flow sensor with minimal starting flow
• Thermal mass flow meter chip ensures high-precision measurement without temperature and pressure compensation
• Flow meter range: 0 L/min to 100 L/min with ±2% accuracy
• Multiple sensors integrated on single chip for improved range ratio
• High zero point stability with excellent repeatability and fast response
• Graphic dot matrix LCD display (128×64 resolution) with full English interface
• 4M memory for measurement value recording
• Two-wire micromanometer sensor with explosion-proof design
• Micro-pressure measurement range: -1000Pa to 1000Pa with 1Pa accuracy
• Special gas path conversion elements for convenient system switching
• Suction pump capacity: ≥40L/min to 100L/min
• Constant ventilation volume: (85 ± 1) L/min
• Power supply: AC220V, 50Hz

• GB 2626-2006 Breathing protective equipment Self-priming filter anti-particulate respirator 6.5 6.6
• GB/T 32610-2016 Technical Specifications for Daily Protective Masks
• YY0469-2011 Medical Surgical Masks
• GB19083-2010 Medical Protective Mask
• YY0969-2013 Disposable Medical Mask

• Do not carry by the control box bottom during transportation
• Wipe electroplated parts with oil to prevent rust and maintain brightness
• Clean machine after testing and regularly oil active fulcrums
• Use dry cloth for panel cleaning to prevent moisture damage
• Store fixtures and accessories properly with anti-rust protection
• Ensure stable foundation and level placement after transportation
• Follow specified power input requirements
• Proper grounding for safety and signal interference prevention
• Avoid unplugging during operation
• Professional personnel only for operation and maintenance