Sampler Operation
Post-Sampling Verification and Data Retrieval
Thermo Fisher Scientific
Partisol 2000
i
and Partisol 2000
i
-D Instruction Manual
7-15
The Sampler stores three types of data in its internal data logger: filter data,
interval data, and user data. This information is stored in separate circular
buffers whose contents can be viewed on the screen of the Sampler and/or
downloaded. Once these buffers are filled, the oldest data points are
replaced with the most recent information (“first in, first out”). The
following describes the types of data stored internally in the hardware:
●
Filter Data
- Each record in this buffer contains information for a
different collection filter exposed to the sample stream. The Sampler
has a capacity of 32 records of filter data.
Data for each filter used in the Sampler are stored as a separate record of
filter data. The Sampler displays the following filter data fields in the Filter
Data screen:
Filter_ID, Cassette_ID
- The Filter ID and Cassette ID fields display the
user-defined information entered prior to sampling in the Sample Setup
Screen.
Start_Date, Time
- These two fields display the starting time/date (hh.mm
yy/mm/dd) entered by the user.
Start_Date_actual, Time
- These fields show the actual starting time/date
(hh.mm yy/mm/dd) at which the unit began sampling.
Stop_Date, Time
- These two fields display the stop time/date (hh.mm
yy/mm/dd) entered by the user.
Stop_Date_actual, Time
- These fields show the actual starting time/date
(hh.mm yy/mm/dd) at which the unit began sampling.
Total_Sample_time
- This is the actual total elapsed sample time (hh.mm)
Flow_min, Flow_ave, Flow_max
- These are the minimum, average, and
maximum volumetric flow rates (L/min) during the sampling period for
the flow in a Partisol 2000
i
and the main flow in a Partisol 2000
i
-D.
Flow_COV
- The coefficient of variation is equal to the standard deviation
of the five-minute flow rate averages divided by the average flow rate (16.7
L/min by default for a Partisol 2000
i
and 15 L/min for a Partisol 2000
i
-D).
This value is then multiplied by 100 to yield the %COV value shown on
the run screen and Filter Data records. If this value is greater than 4 (4%),
the Sampler displays the “O1” status code.
Sampled_Volume, Sampled_Volume_std
- The Total volume (in m
3
)
sampled through the filter is recorded in these records. Both the actual and
standard volumes are recorded. In a Partisol 2000
i
-D, this value is the
volume of the main or PM
2.5
sample.
Viewing and
Downloading Stored
Data
