Resetting the Thermometer
If you want to retore the thermometer settings as delivered from the
factory, press “ “ or “ “ until the display shows “ “ then
press “ “ to display “ “ in the primary display. Press “ “ to
exit setup.
2. How to Measure Temperature
Connecting a Thermocouple
Thermocouples are color coded by based on the ANSI color code:
1. Plug a thermocouple into the input terminal(s).
2. Set the thermometer for the correct thermocouple type. To
change the thermocouple type, see “
How to Change
Setup Options
”.
Displaying Temperature
1. Press “ “ for more than 1 second to select the correct
temperature unit.
2. Hold or attach the thermocouple(s) to the measurement location.
The temperature reading appears in the selected display.
3. (DT302) Press “ “ momentarily to show T1 reading in the
primary display, and toggle showing T2 reading, or
the internal temperature of the thermometer in the
secondary display.
Press “ “ for more than 1 second to show T1-T2
reading in the primary display.
Press “ “ momentarily to toggle showing T1, T2,
or the internal temperature of the thermometer in the
secondary display while the primary display shows
the T1-T2 reading.
NOTE:
The display shows “
----
” when a thermocouple is not
connected. The display shows “ “ (OVERLOAD) when the
temperature being measured is outside the thermocouple’s
valid range.
9
Type Color Type Color
J
Black
T
Blue
K
Yellow
E
Purple
4. If you selected a user-defined logging interval (1 second to
23 hours and 59 minutes).
• Press “ “ or “ “ until the display shows “
h:m
” or
“
m:s
”, and then press “ “ to select. The last number in the
time display blinks.
• Press “ “ or “ “ until the logging interval you want
appears on the display, and then press “ “ to select.
Holding down “ “ or “ “ causes the number to change
more quickly.
Changing the Offset
You can adjust the thermometer’s readings to compensate for the
errors of a specific thermocouple. The allowable compensation range
is ±5.0˚C or K, and ±9.0˚F. (DT302 you can store individual offsets for
T1 and T2)..
1. Press “ “ or “ “ until the display shows “
OFFSET
”.
2. Press “ “ to display T1 reading (blinks), T1 offset.
3. (DT302) Press “ “ to display T1 reading (blinks), T1 offset.
Press“ “ or “ “ to display T1 or T2 in the
primary display to select 1 input.
(DT301) Press “ “ to display reading and offset.
The temperature measurement plus the offset
appears in the primary display. The offset appears in
the secondary display.
3. Press “ “ or “ “ until the primary display shows the
correct reading, and then press “ “ to store the offset setting
in memory.
Remember to reset the offset to 0.0 when it is no longer needed.
NOTE:
If T1 or T2 has no offset at all, the display does not
show “
OFFSET
”.
8
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