2015年7月29日星期三

How to choose a laser Particle Counter

Often the selection of a particle counter for use in a cleanroom is done based upon the specifications and cost of the instrument.
Before getting into the details of the specifications it is important to look at what the instrument will be used for, the environments it will be used in, and who will be using the instrument. Without this information taken into consideration, a less then optimal choice of particle counter for the application could be made. Here are some items to consider prior to selecting a handheld particle counter:
What type of environment will the particle counter be used in? Will it be used in an ISO Class 3 Cleanroom for routine particle counting or will it be used for verifying a flow bench is operating prior to a critical process?
What type of data is the particle counter expected to collect? Will this information be recorded as simple pass/fail or will the information have to be logged into a spreadsheet or database?
Will the operator be carrying the particle counter around and placing it on a critical work surface or will it be cart mounted?
Will this handheld particle counter be used to certify cleanrooms and travel from location to location?
Will the particle counter be used to monitor the cleanroom on a continuous basis? Is the particle counter intended to interface with a Facility Monitoring System (FMS)?

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