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When transferring the data file, the 'TAG#' reads 'na'.
—The 'LOG DATA' function was probably not enabled so there is no stored
data to transfer. Remember to look for the 'L' on the data screen to ensure the
'LOG DATA' function is enabled.
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The data was deleted from 'TAG# 01' but the next run came up as 'TAG# 02'.
—Prior to a new 'Log Data' run, select 'LOGGING PARAME-TERS' and at the 'ENABLE LOG DATA' screen, set the 'TAG#' to '01' for the next run.
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Data is producing negative numbers.
—The PM2.5 nut may have come loose inside the inline impactor head. Take the impactor head apart with the hex wrench and tighten the nut.
OR
The 'ZERO/INITIALIZE' session was performed in a dirty, polluted environment and needs to be performed in a clean environment.
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The temperature and relative humidity seem to be wrong.
—The temperature and relative humidity are readings from inside the instrument. The internal conditions should never exceed 120 °F and 60-percent relative humidity.
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With the instrument running, the diagnostic screen displays 'Failure' for the detector instead of 'Normal'.
—Run a 'ZERO/INITIALIZE' in a clean environment. When the 'ZERO' is complete, check the diagnostic screen again ('START RUN > Next > Next').
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The instrument was operating overnight on the internal battery and collecting data. In the morning it will not respond.
—The internal battery ran down and the instrument needs to be recharged from a 120-volt outlet source. After fully recharging the battery for 12 hours, the instrument should operate up to 20 hours.
E-mail: wo_mtdc_webmaster@fs.fed.us