Precision Measurement Engineering, Inc.
(760) 727-0300
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6
2) Move the Logger Control Switch
to the “Record” position. The LED will flash green 5
times. The miniDOT Logger will now record a measurement of time, battery voltage,
temperature, and dissolved oxygen every 10 minutes (or at some other interval you may
have set using the miniDOTControl program).
3) Inspect the o-ring seal for debris.
4) Close the miniDOT Logger by screwing the white pressure housing back onto the black
end cap.
5) Deploy the miniDOT Logger.
Follow these steps to end the deployment
1) Recover the miniDOT Logger
2) Clean and dry all accessible surfaces except the ‘sensing foil’.
3) Open the miniDOT Logger by unscrewing the white pressure housing from the black end
cap. Remove the white pressure housing completely, taking care that water does not drip
onto interior surfaces of circuits or other items inside the miniDOT Logger.
4) Connect to a Windows HOST computer via the USB connection. The miniDOT Logger
will appear as a ‘thumb drive’.
5) Copy the folder having the same serial number as the miniDOT Logger (example 7450-
0001) to the HOST computer.
6) (Suggested, but optional) Delete the measurement folder, but NOT the miniDOTControl
program or the other .jar programs.
7) (Optional) Run the miniDOTControl program to see the state of the miniDOT Logger such
as battery voltage or to select a different recording interval.
8) (Optional) Run the miniDOTPLOT program to see a plot of measurements.
9) (Optional) Run the miniDOTConcatenate program to gather together all the daily files of
measurements into one CAT.txt file.
10) If no more recording is desired, then move the Logger Control Switch to “Halt”, otherwise
leave it set to “Record” to continue recording measurements.
11) Disconnect the miniDOT Logger from the USB connection.
12) Inspect the o-ring seal for debris.
13) Close the miniDOT Logger by screwing the white pressure housing back onto the black
end cap.
Remove the batteries if storing the miniDOT Logger for extended periods.
1.2 A Few Details
The previous section gives instructions for sampling at 10-minute intervals. However, there
are a few additional details that will enhance use of the miniDOT Logger.
Recording Interval
– The miniDOT Logger measures and records time, battery voltage,
temperature, dissolved oxygen concentration and measurement quality at equal time
intervals. The default time interval is 10 minutes. However, it is also possible to instruct the
