In 1990, began developing an advanced-technology light scattering photometer to replace aging instruments incapable of measuring the high protection factors provided by newer gas mask designs. The result was the Laser Photometer Model 8587A, which is still in service for testing filter efficiency.
The photometer owners asked TSI to develop a modern version of the Laser Photometer Model 8587 that retains data continuity with the original version. Without data continuity, vast amounts of legacy research would not be directly comparable to new research. The result was the Laser Photometer 8587A.
The Model 8587A can also be used in HEPA filter scanning systems to measure the penetration efficiencies of large, high-efficiency filter assemblies.
Indicates low airflow conditions
Signal correlates with aerosol mass concentration
Stable 30mW laser light source
Internal valve switches between upstream and downstream samples
Automatic gain selection
Analog and digital output
Same photometer engine as used by NIOSH
Filter-efficiency measurements to 99.999%
Penetration versus particle size to 0.001%
Fit factors to 100,000
Manual or remote control via RS-232 or USB
Critical orifice controls sample airflow
Plug-and-play compatibility with the original 8587 command language