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248083400-1 Rev 7
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5 Setting up the Counter
Using Report
Parameters
Besides printing reports, the Report Setup screen can be used to display
each report’s minimum requirements - such as how many data records
are required and from how many different locations data must be
recorded to meet a given class for a given cleanroom area.
Once the user knows these requirements, the user can configure the
HANDHELD so that the data collected will fulfill the report’s
requirements.
Note:
In order to review
reports, the optional printer
must be attached to the
HANDHELD.
For each report type, as the user changes the Room Area, the Class
Level, and sometimes the Air Flow or the Room Status, the values for
the Minimum Locations, Minimum Samples and Minimum Volume
may change and will be calculated for the requirements for each report
type.
These values are indicated on the screen so that the user can configure
the instrument appropriately to ensure the samples recorded meet the
requirements for the report selected.
Basic
Requirements
Each of the reports have some basic requirements that, if not met, cause
the report to FAIL classifying the cleanroom immediately.
Fed Std 209E (feet)
This report requires a minimum of 2 locations measured.
At least 1 sample per location must be taken.
At least 5 samples in total must be taken in the cleanroom.
The minimum sample volume must be at least 0.1 cubic feet.
The 95% Upper Confidence Limit (UCL) must be calculated if the
number of sampled locations is less than or equal to 9.
Air flow (Unidirectional vs. Non-unidirectional) will have an effect on
the minimum locations and minimum samples required. In general, the
Non-unidirectional option requires more of both locations and samples.
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