MarMonix MTT-302 User manual

Thermocouple Thermometer
Products Code: MTT-302
User Manual
WWW.MARMONIX.CO

(Dual input) contact thermometers offer fast response
and laboratory accuracy. These thermometers work with
K-type thermocouples and offer 0.1 0C/0.10 F resolutions.

1. TYPE K 2.TYPE K
3 . Primary or Secondary Display 4.Secondary Display
5. T1, T2, T1-T2 6. UP
7. ENTER 8. DOWN
9. ON/OFF 10. SETUP
11. BLACKLIGHT 12. MIN MAX AVG
13. HLOD 14.0C,0 F, K

Specifications
General Specifications
Dimensions(without holster) 165mm×76mm×43mm
Battery
9V
Operating Temperature 0
0
C to 50
0
C (4
0
F to 122
0
F)
Noncondensing
Storage Temperature 10
0
C to 50
0
C (14
0
F to 122
0
F)
Temperature Range:
K type thermocouples
-200 0C to 1372 0C (-328 0 F to 2501 0 F)
Temperature accuracy
T1, T2
Above –100 0C (-148 0F)

[0.15%rgd+10C(1.8 0 F)]
T1, T2
Blow –100 0C (-148 0F)

[0.5%rgd+20C(3.6 0 F)]
T1-T2

[0.5%rgd+10C(1.8 0 F)]
DisplayResolution
0.1
0C
/
0 F
/
K <10000
10C / 0 F / K >10000

Features
1. Large backlit dual 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 0C, 0 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. Whenreadings, shows the
maximum, minimum, and average of the logged
readings. To exit the MIN/MAX/AVGmode , press the
button for 3 seconds to return to normal
operation.
3.Press to switch between Celsius (0C), Fahrenheit
(0 F), and Kelvin (K).

4.Press to freeze or unfreeze the displayed
readings.
5.Press to toggle showing the T1, T2, and T1-
T2 (differential temperature measurement) in
theprimary or secondary display.
6. Press 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.

Display Elements
1.
Setup is in progress.
2. The thermocouple measurement includes anoffset.
See "Changing Setup
Options."
3. The displayed readings do not change.
4. Low battery. Replace the batteries.
5. The temperature unit.
6. Primary Display.T1, T2, or T1-T2 reading.
11

7.Secondary Display: MAX, MIN, AVG, or offset,T1or T2
reading.
8.Time Display: The elapsed time.
9. The thermocouple type.
10. MAX, MIN, AVGdisplay.
11. The sign of Auto Power Off mode forbade.
Using the Thermometer
1. Plug the thermocouple(s) into the 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
thethermocouple is "open," the display shows "- - - -"
Changing Setup Options
Use Setup to change offset, sleepmode settings.The
thermometer stores the settings in its memory.
Setup Options
Option
Menu
item
Settins
Offset
offset
T1 or T2
Sleep
Mode
SLP
On (sleep mode on)or 0FF (sleep
modeoff)

Entering or Exiting Setup
When the thermometer is in Setup mode, the
displayshows SETUP.
Press to start or exit Setup.
Changing a Setup Option
1. Press or to scroll to the setup option
youwant to change.
2. Press to indicate that you want to change
thissetting.
3. Press or until the setting you want to
useappears on the display.
4. Press to store the new setting in
memory.NotesSetup is disabled in MIN MAX mode
Offset
The primary display shows the temperature plusthe
offset and the secondary display shows theoffset.

Remember to reset the offset to 0.0 .You can store
individual offsetsfor T1 and 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 buttonpress occurs for 20 minutes. When
the auto power off mode is forbade, a letter “n” is show
on the screen (“Display Elements”).
When the thermometer is in Setup mode, the
displayshows SETUP. Press or to scroll to
the”SLP ” page . Press to indicate “On” or “OFF”.
Press or until the setting you want to
useappears on the display. Press to store the new
setting in memory. On (sleep mode on)or0FF (sleep
modeoff).
Displaying Temperatures
1. Press to select the correct temperature scale.

2. Hold or attach the thermocouple(s) to
themeasurement location.The temperature reading
appears in the primarydisplay.
3.Press to toggle between showing theT1, T2,
and T1-T2 readings in the primary orsecondary display.
Notes
The display shows "- - - -" when a thermocoupleis not
connected.
The display shows 0L (overload) when thetemperature
being measured is outside thethermocouple’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, orT1-T2
readings in the primary or secondary display.
3. Press again to turn off the HOLD function.
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, orthe time at which the minimum or maximum
occurred appears on the display.
2. Press button for 3 seconds toto exit MIN MAX
mode.
Using the Offset to Adjust for ProbeErrors
Use the offset option in Setup to adjust the
thermometer’sreadings to compensate for the errors of
a specificthethermocouple.The allowable adjustment
range is ± 5.0 0C or± 9.0 0F.
1. Plug the thermocouple into the input connector.
2. Place the thermocouple in a known,
stabletemperature environment (such as an icedry well
calibrator).
3. Allow the readings to stabilize.
4. In Setup change the offset until the primaryreading
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