- The model 8587A laser photometer uses the same photometer engine that is used in the Automated Filter Tester models 8130 and 8127. It uses a 30 mW laser to illuminate and collect the scattered light from airborne particles. An internal valve allows switching between upstream and downstream sampling. Due to its portability and wide dynamic range, it also is used in HEPA filter scanning systems measuring the penetration efficiencies of large, high-efficiency filter assemblies.
- Stand-alone light scattering photometer
- Photometer engine also used in 8130 and 8127 and by NIOSH
- Capable to measure filter efficiencies up to 99.999%
- In respirator fit testing used to determine fit factors up to 100,000
- Signal correlates with aerosol mass concentration
- Automatic gain selection
- Analog and digital output
- Manual or remote control via RS-232 or USB
- Critical orifice controls sample airflow