Handheld Laser Particle Counters Effective For Both Real Time And Sequential Particle Monitoring

Real Time particle monitoring requires placing aseparate pump dedicated to particle counting may
single handheld laser particle counter or a particlebe used.
sensor at a designated location within theSequential particle monitoring is also known as a
cleanroom. The particle counter sensor countsManifold monitoring system or as Pneumatically
particles and monitors their events at theMultiplexed Particle Counting. In this system, a
specified location in the cleanroom. The particlessingle handheld laser particle counter is used to
are monitored in particles per cubic foot or permonitor multiple location points. To accomplish this,
cubic meter. There are no gaps in the particlea sequential manifold sampler must be added to
counting data, making the Real Time systemconnect the particle counter to the various
highly effective at critical locations to properlysampling tubes. These individual tubes are then
monitor sensitive processes.sampled in a sequential order.
Real Time particle monitoring offers a choiceThe particle counter stops counting until the tube
between using a remote particle counter or achange is complete and allows any air from the
stand alone handheld laser particle counter with aprevious sample to be purged. The number of
built-in vacuum pump. The remote particle countermonitoring points determines the frequency of
provides a process vacuum for sampling or aeach sample.