Holding And Storing Measurements; Automatic Vs. Manual Datalogging - Omega HHLM112SD User Manual

To change the unit of measurement, or to configure the instrument for use with a
Type J thermocouple probe, press the SET
perform Step 7 or 8 of the procedure. Along with the measured value, the display also
shows the type of thermocouple the HHLM112SD is configured for.
Whenever the HHLM112SD 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
appear briefly at the lower left of the display.

HOLDING AND STORING MEASUREMENTS

4. To hold a measured value of light intensity or temperature, 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.
5. 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.
6. 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 HHLM112SD can automatically log data using any of 11 sampling times from 1
second to 1 hour. To view the sampling time for which the instrument was set up,
press the LOGGER
Step 9 of the setup procedure.
7. 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
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.
8. To pause automatic datalogging, press the LOGGER
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
again resumes automatic datalogging.
button once. To change the datalogging sampling time, perform
button to reenter setup mode and
button. Doing so causes both values to
button once; this action
button at
button
9