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If you choose "yES", after you press the REC/ENTER button the instrument will prompt you
to confirm that decision by displaying the term "Ent" below "yES" and sounding three
beeps. To confirm that you want to begin the erasure/formatting procedure, press the
REC/ENTER button. "Ent" will then flash several times and the instrument will sound
another three beeps to confirm that the SD card has been erased and formatted.
Once the SD card has been set up, the display will then either return to the first of the eight
steps in the setup sequence—setting the current date and time—or show the term "ESC".
If "ESC" appears, press the POWER/ESC button to exit the setup procedure and enter
normal operating mode.
ADJUSTING THERMOCOUPLE OFFSETS
To maximize the accuracy of measurements, General strongly recommends that you
compensate for (offset) the small measurement error peculiar to each thermocouple used
with the instrument.
To adjust the offset of a thermocouple, press the Type
the display. Then plug the thermocouple into the T1 jack on the top of the thermometer.
Press the LOGGER OFFSET button, hold it for at
least three seconds, and then release the button.
A screen similar to the following should appear:
Next, use the Type
the value under "oFS" to match the value under
"SEt". Then press the REC/ENTER button to store the offset adjustment and return the
instrument to measurement mode. Repeat the procedure for each thermocouple to be used.
NORMAL OPERATION
1. To prepare to make measurements, power on the DT4208SD and make sure an
SD card is firmly seated in the socket on the bottom of the instrument.
By default, the DT4208SD uses Celsius units for temperature measurements. If you wish to
make Fahrenheit units the default, press the SET button to enter the setup procedure and
perform Step 8.
2. To use Type K thermocouples to measure up to 12 channels of temperature, plug one
to 12 of them (two are supplied, others are available for purchase from General) into
the jacks (callout 1-9 of Fig. 1) on the top of the thermometer. Make sure jack T1 is
occupied. Because Type K is the instrument's default thermocouple type, plugging in the
thermocouples will instantly produce eight display readings. Any of the eight channels
that are not used will show the overrange reading "- - - - -".
To show the other four of the 12 channels, press the Page M button once. To return the
display to Channels T1 through T8, press the Page M button again.
8
or Page M button to adjust
button until its type appears on
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