CEM DT-613 User manual

OPERATION MANUAL
Professional Thermocouple Thermometers
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The (two input) contact thermometers offer fast
response and laboratory accuracy. These thermometers
work with one K-type thermocouples and one IR temperature
probe as temperature sensors, and it offered 0.1°C / 0.1°F
resolution.
Specifications
General Specifications
Battery
9V
Operating Temperature
0°C to °C (4°F °F)
Noncondensing
Storage Temperature
°C °C (14°F °F)
Temperature Range:
K type thermocouples
-200°C to 1372°C
(-328°F to 2501°F)
IR Temperature
-30°C to 550 °C (-22°F to1022°F)
Temperature accuracy
T1 Above –100°C (-148°F)
± [0.15%rgd+1°C(1.8°F)]
T1 Blow –100°C (-148°F)
± [0.5%rgd+2°C(3.6°F)]
T2
T2 Above-10°C(14°F)
± [2.0%rgd+2°C(3.6°F)]
T2 Blow -10°C(14°F)
± 5°C( 9.0°F)
T1-T2
T2 Above-10°C(14°F)
± [2.0%rgd+3°C(5.4°F)]
T2 Blow -10°C(14°F)
± 6 °C(11°F)
Display Resolution
0.1°C / °F/ K <1000 ,
1°C / °F/ K >

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Features
1. Large backlit display shows any combination of T1, T2,
T1-T2, plus MAX, MIN, AVG.
2. Relative time clock on MAX MIN and AVG provides a
time reference for major events.
3. Electronic Offset function allows compensation of
thermocouple errors to maximize overall accuracy.
4. Readout in °C, °F, or Kelvin (K).
5. Auto Power Off mode (Sleep mode) increases battery
life.
Button
1. Press to turn the thermometer on or off.
2. Press to step through the maximum, minimum, and
average readings. When readings, shows the maximum,
minimum, and average of the logged readings. To exit the
MIN/MAX/AVG mode, press the button for 3 seconds
to return to normal operation.
3. Press to switch between Celsius (°C), Fahrenheit
(°F), and Kelvin (K).
4. Press to freeze or unfreeze the displayed readings.

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5. Press to toggle showing the T1, T2, and T1-T2
(differential temperature measurement) in the primary,
secondary and tertiary display.
6. Press button to turn on the backlight. Press it
again to turn off the backlight. Press button for 3
seconds to start or exit Setup. (See "Changing Setup
Options.")
7. Press to scroll to the Setup option you want to
change. Press to increase the displayed setting.
8. Press to scroll to the Setup option you want to
change. Press to decrease the displayed setting.
9. Press to enter a Setup option. Press again
to store the displayed setting in memory.

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Display Elements
1. Thermocouple type.
2. IR temperature.
3. The displayed readings do
not change.
4. Entering or Exiting Setup.
5. Primary Display: T1, T2,
T1-T2 reading.
6. Secondary Display:
MAX, MIN, AVG, or offset T1 or T2 reading.
7. The temperature units.
8. Tertiary Display: The elapsed time or T1, T2 reading.
9. Low battery. Replace the batteries.
10. Min: sec or hour: min Display..
11. MAX, MIN, AVG display.
Using the thermocouple (s)
1. Plug the thermocouple(s) into the T1 input connector(s).
2. Press to turn on the thermometer. After 1 second
the thermometer displays the first reading. If no
thermocouple is plugged into the selected input or the
thermocouple is "open," the display shows "- - - -".
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Using the IR (Infrared Ray)
1. Plug the output into the T2 (IR input) connector(s)
“T2 - - - -” will show on screen. If the is not connected,
“T2 - - - -” is not show on the screen.
2. Press the “SCAN” button ,the temperature will show on
the screen.
Changing Setup Options
Use Setup to change offset, sleep mode settings. The
thermometer stores the settings in its memory.
Setup Options
Entering or Exiting Setup
When the thermometer is in Setup mode, the display shows
SETUP.
Press button for 3 seconds start or exit Setup.
Option
Menu item
Settins
Offset
offset
T1 or T2
Sleep Mode
SLP
On (sleep mode on)or
0FF (sleep modeoff)

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Changing a Setup Option
1. Press or to scroll to the setup option you
want to change.
2. Press to indicate that you want to change this
setting.
3. Press or until the setting you want to use
appears on the display.
4. Press to store the new setting in memory.
Notes Setup is disabled in MIN MAX mode
Offset
The primary display shows the temperature plus the offset
and the secondary display shows the offset. You can store
individual offsets for T1, T2.
Auto Power Off mode
The thermometer enters sleep mode (default). That is to say,
the meter will automatically shut off after 20 minutes if no
button press occurs for 20 minutes. When the thermometer
is in Setup mode, the display shows SETUP. Press or
to scroll to the ” SLP ” page. Press to indicate
“On” or “OFF”. Press or until the setting you
want to use appears on the display. Press to store
the new setting in memory. On (sleep mode on) or 0FF
(sleep mode off).

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Displaying Temperatures
1. Press to select the correct temperature scale.
2. Hold or attach the thermocouple(s) to the measurement
location. The temperature reading appears in the primary
display.
3. Press to toggle between showing the T1, T2, and
T1-T2, and readings in the primary or secondary display.
Notes
The display shows "- - - -" when a thermocouple is not
connected.
The display shows OL (overload) when the temperature
being measured is outside the thermocouple’s valid range.
Holding the Displayed Readings
1. Press to freeze the readings on the display .The
display shows HOLD.
2. Press to toggle showing the T1, T2, T1-T2,
readings in the primary or secondary display.
3. Press again to turn off the HOLD function.

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Viewing the MIN, MAX, and AVG Readings
1. Press to step through the maximum (MAX), minimum
(MIN), or the average (AVG) readings. The elapsed time
since entering MIN MAX mode, or the time at which the
minimum or maximum occurred appears on the display.
2. Press button for 3 seconds to exit MIN MAX mode.
Using the Offset to Adjust for Probe Errors
Use the offset option in Setup to adjust the thermometer’s
readings to compensate for the errors of a specific the
thermocouple and IR temperature. The allowable adjustment
range is ± 5.0°C or ± 9.0°F.
1. Plug the thermocouple into the input connector.
2. Place the thermocouple in a known, stable temperature
environment (such as an ice dry well calibrator).
3. Allow the readings to stabilize.
4. In Setup change the offset until the primary reading
matches the calibration temperature.(“Changing Setup
Options.")
Replacing the Batteries
1. Turn off the thermometer if necessary.
2. Loosen the screw and remove the battery door.
3. Replace 9V batteries.
4. Replace the battery door and tighten the screw.

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