下载次数：82次 浏览次数：311次发布时间：2015-11-16 16:47This photometer features a reliable laser diode that produces constant laser
power, so aerosol concentration measurements remain stable over a long
period of time. A sheath-air design keeps the optics clean for low background
levels and also minimizes maintenance requirements. The 8587A utilizes
an internal switching valve to measure both the upstream and downstream
aerosol concentration. A special high-speed “purge” mode shortens the purge
time when switching between upstream and downstream measurements.
program to give you complete flexibility in test protocol and database
management. All of these features combine to make the 8587A ideally
suited for custom filter testing applications.
Applications
+ Respirator certification testing (fit testing)
+ Efficiency testing of HEPA filter assemblies
+ Respirator design and development
+ Filter design and development
+ Aerosol laboratory research
+ 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
+ Indicates low airflow conditions
+ Signal correlates with aerosol mass concentration
+ Stable 30 mW laser light source
+ Internal valve switches between upstream anddownstream samples
+ Automatic gain selection
+ Analog and digital output
+ Manual or remote control via RS -232 or USB
+ Critical orifice controls sample airflow
+ Plug-and-play compatibility with the original 8587
command language
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