General Tools and Instruments DTH3007SD - Manual (Page 8)

By default, the DTH3007SD is configured for a Type K thermocouple. To use a Type J
thermocouple, perform Step 7 of the setup procedure.
Whenever the instrument is in measurement mode, you can turn off the backlight (which is
on by default) by briefly pressing (but not holding) the POWER/ESC button. To reactivate the
backlight, briefly press the button again.
Whenever the instrument is in measurement mode, you also can check the current date and
time by briefly pressing the SET ▼ button (which has the words “Time check” stenciled
below it). 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 FUNC./HOLD/NEXT button during the
measurement. Doing so will cause the word “HOLD” to appear at the top of the display.
Pressing the FUNC./HOLD/NEXT 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 the REC/ENTER button and hold it 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 DTH3007SD can automatically log data at a user-selected sampling period from
1 second 3,600 seconds (one hour). To view the sampling time that the instrument has
been set up to use, press the LOGGER ▲ button (which has the words “Sampling check”
stenciled below it) once. To change the sampling time, perform Step 9 of the setup
procedure.
1. To start automatic datalogging, press the REC/ENTER button once. The top line of the
display will show the term “REC”. Pressing the LOGGER ▲ 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 time-stamping measurements and storing
them in memory.
2. To pause automatic datalogging, press the LOGGER ▲ 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 ▲ button again resumes
automatic datalogging.
3. To end automatic datalogging, press the REC/ENTER button and hold it for at least
three seconds. This action causes the “REC” message to disappear.
4. To log data manually, set the sampling time to zero by performing Step 9 of the setup
procedure. Then press the REC/ENTER button once. The display will show the term “REC”
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