INFICON DataFID Portable Flame Ionization Detector for Leak Detection and Repair (LDAR) - Manual (Page 49)

074-578-P1A 49
meth 21 status
performed, the status key should be selected by pressing the ‘status’ soft key. The screen will
change to that shown in Figure 27.
Figure 27. Method 21 Mode Status Display
The user can choose the status for the current tag by first moving the cursor up or down to the
proper stat
us designation and then press the ‘select’ soft key. Once a status designation is
chosen for the current tag, the DataFID automatically increments to the next tag and the whole
process is repeated starting with Figure 22.
If a repeat reading for the same tag is needed, press the ‘view’ soft key and select the specific
tag by moving the cursor to the appropriate location. Then, press the ‘select’ soft key. The
display as shown in Figure 22 will be presented.
Logging Off
In the Logging Off mode, the DataFID will display the current TVOC reading but will not log any
values or display any Location strings. Logging Off mode will continuously display the
concentration of total volatile compounds present that the DataFID can ionize. The reading is
updated approximately once per second. Logging Off mode has the same display format as the
Interval mode.
Data Logging
The DataFID reading is updated once a second. In the background, the DataFID is sampling the
concentration and logging the average concentration for either a selected time period (Interval)
or at the time the stop soft keys are pressed (Location and Method 21). All logs record the date,
time, status, and TVOC reading. In the Location and Method 21 modes, a character string up to
twenty characters is also recorded. In addition, Method 21 mode adds more details to a log
which are described
in the ‘Method 21 Operation’ section.
The DataFID has the ability to change log modes without erasing the log. In other words, if the
user switches User modes from Interval mode to Location mode the previous Interval log entries
are NOT erased.
The DataFID also operates in a ‘circular-logging’ mode. This means that the log will never fill
and stop logging but will loop back to the first entry and start logging at entry number 1.
Other
Normal
Leaking
Repaired
back
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