
In 1990, the development of an advanced technology light scattering photometer was initiated to replace obsolete instruments that were unable to detect the high protection factors offered by newer gas mask designs. The Laser Photometer 8587A was the result of this development and is still used to test filter efficiencies.
The owner of the photometer asked TSI to develop a modern version of the Laser Photometer 8587 that retained data continuity with the original version. Without data continuity, a large number of legacy studies could not be directly compared to new studies. The result is the Laser Photometer 8587A.
Model 8587A can also be used in the HEPA Filter Scanning System to check the penetration rate of large HEPA filter assemblies.
Uses same photometer engine as NIOSH
Filter efficiencies tested up to 99.999 percent
Penetration to particle size ratios up to 0.001 percent
Fit factors up to 100,000
Indicates low airflow conditions
Signal correlates with aerosol mass concentration
Stabilized 30mW laser light source
Internal valve changes between upstream and downstream samples
Automatic gain selection
Analog and digital outputs
Manual or remote control via RS-232 or USB interface
Key orifice controls sample airflow
Plug and play compatibility with the original 8587 command language
Respirator certification testing (fit testing)
Efficiency testing of HEPA filter assemblies
Respirator design and development
Filter design and development
Aerosol laboratory studies
Included Items
One Laser Photometer Model 8587A
Operation and maintenance manual
Power cord
Model 8587A ASCII Command Set Documentation CD-ROM, USB Driver Software for Windows XP and 2000, USB Terminal Emulation Software for Interactive Control via USB Port and C++ Library
Set of filters for initial maintenance operations

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