MT-250
Pocket Sized Handheld Digital Infrared Th ermometer
Operating Instructions
Specifications:
• Temperature measurement range: -67~482°F (-55 to
+250°C)
• Operating temperature range: 14 to +122°F (-10 to +50°C)
• Resolution: 0.1°C /°F (for th ermometer);0.01sec (for Stop
Watch)
• Accuracy: -55~0°C: +/-(2+0.05/deg)°C; above 0°C: +/-2°C
or +/-2% of the reading, whichever is greater
• Field of View: 5:1 (Distance-to-Spot Ratio)
• Emissivity Range: 0.95 default –adjustable 0.05 to 1
• Auto real time clock and Room temperature while power of f
• °F / °C Switch, MIN/MAX/LOCK, Stop Watch function
• Battery Life: 40 hours continuous use (auto power o ff after
15seconds)
• The battery life of the shelf =8 months.
• Battery: one CR2032 lithium cell battery (replaceable)
• Foldable stand
Setting Clock
1) Power on: Press the “Scan Button”.
2) Press the “Mode Button” seven times and the “Set” icon starts to
flash, which indicates the setting screen.
3) Press the “Scan Button” to make the “24” icon flashing, whic h
indicates the 12/24-hour setting screen.
Press the “Scan Button” again to set 12/24-hour Format fro m
24-hour to 12-hour.
4) Press the “Mode Button” to move the flashing in the sequ ence
shown below to select other settings.
Hour ⇒ Minutes
5) While the hour, minutes setting is flashing, use “Scan Button” to change it. Press “Mode Button” when complete.
Using the Infrared Thermometer
1) Always make sure the sensor lens is clean without any damage.
2) Power on: Press the “Scan Button”.
3) Measuring Temperature: When you press the “Scan Button”,
the IRT will measure the surface temperature immediately. If you
hold down the “Scan Button”, the reading of measurement wi ll
be continuously updated.
Note: The Distance-to-Spot Ratio (D:S) is 5:1. This means that the IRT measures a spot 1” wide at a distance of 5”
from surface; or a spot of 2” wide at 10” from surface. Be s ure the target area is within the field of view.
4) Note: Applications include the Water, Milk, Cloth, Skin, or visi t www.microtempusa.com for further information.
5) Power off: Device will automatically power off if left idle for mor e than 15 seconds to extend battery life
6) If you have set the “clock” mode, after “power-off”, room te mperature & clock will be showed on the screen
immediately.
Using the Stop Watch
1) Power on: Press the “Scan Button”.
2) Press the “Mode Button” four times and the
“stopwatch” icon starts to flash.
3) To start or stop stopwatch, press the “Scan
Button”.
To reset stopwatch, press the “Mode Button”.
4) Press “Mode Button” to enter the thermometer
function
Other Functions
MIN / MAX
Power on and press the “Mode Button” o nce for th e Minimum (MIN) or twice for
Maximum (MAX) modes. When the MI N or MAX icon flashes, p ress the “Scan
Button” to confirm. H old down the “Scan Button”, the minimum or m aximum
reading of measurement will be continuous updated.
LOCK
Power on and press the “Mode Button” three times. When the LOCK icon flashes,
press the “Scan Butto n” t o confirm. This mode is particularly useful for continuous
monitoring of temperatures for up to 60 minutes or unti l the “Scan Button” is
pressed.
°F / °C
Power on and press t he “Mode Button” five times. When the °F icon flashes, press
the “Scan Button” to change the scale to °C. The setting w ill be saved when turned
off.
Emissivity
Power on and press the “Mode Button” six times. When the default emissivity “95E”
appears, press the “Scan Button” to modify the emissivity setting. Press “Mode
Button” when complete. The setting will be saved when tu rned off.
Battery Replacemen t
Battery is low and no more measurements are possible.
The battery should be replaced immediately with a CR2032 lithium cell. The battery is located under the twist cover at the rear of
thermometer. Please remember to power off the unit before replacing the battery.
A malfunction may occur if the power is on when the battery i s replaced. If a malfunction occurs, restart the device. Keep the battery away
from children.
Important Notes
Storage & Cleaning: The sensor lens should be kept clean at all times and stored at room temperature.
• Use only a soft cloth or cotton swab with water or medical alcohol when cleaning the lens.
• Remember to allow the lens to fully dry before using.
• The thermometer should be stored at -4 to 149 OF (-20 to +65 OC).
EMC/RFI: Readings may be affected if the unit is operated within radio frequency electromagnetic field strength of approximately 3 volts per meter,
but the performance of the instrument will not be permanently affected.
Trouble Shooting
‘Hi’ or ’Lo’ is displayed when the temperature being measured is outside of the range of the
instrument, ‘Hi’ when higher than +250oC (482°F) and ‘Lo’ when lower than –55 oC (-67°F). Please
select target within specifications. If a malfunction still exists, please contact the nearest retailer.
‘Er2’ is displayed when the thermometer is exposed to rapid changes in the ambient temperature. ‘Er3’
is displayed when the ambient temperature exceeds –10 oC (14°F) or 50oC (122°F). The thermometer
should be allowed plenty of time (minimum 30 minutes) to stabilize to the working/room temperature.
For all other error messages it is necessary to reset the thermometer. T o reset the thermometer, waiting for the
instrument power off, remove the battery and wait for a minimum of one minute, reinsert the battery and turn on. If the
error message remains please contact the Service Department for further assistance.
SPARK INDUSTRIES, LLC
2363 TELLER RD. SUITE 104
NEWBURY PARK, CA 91320
www.microtempusa.com
www.sparkindustries.net
⇔
Setting 12 hour /24 hour clock
⇔
(Power off) ( Power on)
< 30min >30min
Min:Sec = 01:28 & 0.75sec Hour:Min:Se c = 01:28:47.5sec
(resolution=0.01sec, range to 24hr)
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