Aerosol Photometer integrity/leak testing of HEPA filtration systems ​

Digital Photometer is portable, yet rugged, and the ideal instrument for in-situ filtration system integrity testing. During the High Efficiency Penetration Air-filter running, if any leakage or allowed because of not fully installed happened, the intended cleaning effect will not be achieved, so, it’s necessary to detect leaks in high efficiency filtration systems (HEPA & ULPA). To validate the integrity of a filtration system, a known challenge agent (such as Aerosol Generator) consisting of an airborne test aerosol is generated and introduced upstream of the filter. The challenge agent provides particulate matter upstream of the filter to allow measurements downstream of the filter. To take the Photometer for checking the upstream aerosol concentration and comparing with the downstream aerosol with the use of the scanning probe, the leakage of HEPA will be detected for the efficiency.

• long life laser light source;
•  high precision photoelectric multiplier tube detection;
•  can set PAO, DOP and other types of aerosols;
• equipped with a dedicated handheld device to achieve control, display and sampling function;
•  large capacity data storage, real-time data storage;
• more than the setting alarm sound and light alarm;
• can be obtained by U disk or thermal printer to print historical data;
•  can print leakage rate and other monitoring data in real time;
•  through the special software, the sampling data can be imported into PC;
•  automatic fault detection.

Application of digital aerosol photometer 

• leakage detection of clean room
• VLF bench
• biosafety cabinet
• glove box
• HEPA vacuum cleaner
• HVAC system
• HEPA filter
• negative pressure filtering system
• operating theatre
• nuclear filter system
• collection protect filter