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Whenever the instrument is in measurement mode, you also can check the current date and time
by briefly pressing the TIME button. Doing so causes both values to appear briefly at the lower
left of the display.
Holding and storing measurements
1.
To hold a measured value
, press the HOLD/ESC button during the measurement. Doing
so will cause the word “HOLD” to appear at the top of the display. Pressing the
HOLD/ESC button again releases the hold.
2.
To record and recall readings
, press the REC/ENTER button while making
measurements. This will make the term “REC” appear at the top of the display. Pressing
the REC/ENTER button again, briefly, will make the term “MAX” appear to the right of
“REC” and switch the display to the maximum value stored in memory during the last
recording session. Pressing the REC/ENTER button again, briefly, will make the term
“MIN” appear to the right of “REC” and switch the display to the minimum value stored
during the last session.
3.
To exit recording mode
, press and hold the REC/ENTER button for at least three
seconds, until the term “REC” disappears from the top line of the display. The display
will then revert to showing the current reading.
Automatic vs. manual datalogging
The DOH-SD1 can automatically log data at a user-selected sampling period from 1 second to 9
hours. To view the sampling time for which the instrument was set up, press the LOGGER SET
button (which has the words “Sampling check” stenciled below it) once. To change the sampling
time, perform Step 5 of the setup procedure.
1.
To start automatic datalogging
, press the REC/ENTER button once. The top line of the
display will then show the term “REC”. Pressing the LOGGER SET button at this point
will make REC flash and add the flashing term “LOGGER” at the top right of the
display. This indicates that the instrument is currently storing measured values and their
time stamps in memory.
2.
To pause automatic datalogging
, press the LOGGER SET button once; this action
makes the flashing term LOGGER disappear from the top right of the display and
changes the term “REC” from flashing to constant. Pressing the LOGGER SET button
again resumes automatic datalogging.
3.
To end automatic datalogging
, press the REC/ENTER button and hold it for at least
two seconds. This action causes the “REC” message to disappear.
4.
To log data manually
, set the sampling time to zero using Step 5 of the setup procedure.
Then press the REC/ENTER button once. The display will show the term “REC” on the
top line, a value in the middle, and below it the letter “P” on the left and a number from 1
to 99 on the same line to the right. The number indicates the position on the SD card that
will be used to store manually logged data.
Now press the LOGGER SET button. This will cause the beeper to sound
[even if disabled?
Engineering, pls check]
and the term “LOGGER” to briefly appear at the upper right of the
