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TL3 INSTRUCTIONS
INTRODUCTION
This manual describes the basic function and use instructions for model TL3 portable digital reference thermometer instruments. The
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instruments are not intended for use in permanent outdoor installations and are not intended or tested for icing conditions.
BATTERY REPLACEMENT (Type CR2032)
Remove the single screw and back cover on the TL3 to access the battery.
IMMERSION DEPTH
For best measurement results, a minimum immersion depth of 4 inches into the temperature source is recommended.
USER INTERFACE
Power Button
Function Button
“Power” Button
Pressing the Power button once will turn on the device. The instrument will shut off automatically within 20 minutes.
Pressing and holding the Power button for 4 seconds will disable the Auto-off feature. (‘Conn’ will flash momentarily to indicate
Continuous operation).
Pressing and holding the Power button will shut the instrument off and clear all logged and averaged readings.
Power button
One quick push
Hold 4 seconds
Hold and Release
when display reads “oFF”
Enable Continuous operation “Conn”
Operation Display
Power On
Power Off
(Clears Readings)
“oFF”
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Function “f” button
Press and Hold the Function Button “f” to display options in a menu format. When the desired function is displayed release the
button.
Hold and Release when the
display reads:
“Fn”
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“C-F” Changes units “76.3 F” or “24.6 C”
“dEC”
Notes:
1. As soon as the TL3 is turned on, the minimum, maximum and average data is continuously updated. Wait 20 seconds after
power-on to allow collection of readings before viewing minimum, average and maximum.
Function (“f”)
Displays Lowest, Average and
Highest readings
(0.1 or 0.01)
Example on Display
78.61 L, 78.70 A, 78.93 H
“76.3 F” or “24.6 C”
Display Arrows
The Arrows on the left side of the screen will show you at a glance as to whether the reading is increasing, decreasing or has
stabilized. The Up Arrow indicates an increasing temperature, the Down Arrow a decreasing temperature and no arrows a stabilized
status.
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Battery Check
When the voltage of the batteries is low, the device will indicate “Lo bAtt” on the display before resuming normal display functions.
Do not attempt to calibrate the instrument if the “Lo bAtt” has been displayed since the new calibration values may not be properly
stored to memory.
Error Codes
ErrHI indicates an over range reading, meaning the temperature at the sensor has risen above the specified limit of the unit. This also
may indicate an open-circuit condition in the unit which may require repair.
ErrLO indicates a below range reading, meaning the temperature at the sensor has dropped below the specified limit of the unit. This
also may indicate a short-circuit condition in the unit which may require repair.
CALIBRATION
Calibration service is available from ThermoProbe, Inc. and authorized distributors. Contact ThermoProbe, Inc. for requirements if
onsite calibration is desired.
AUTHORIZED REPAIR
It is recommended that service beyond the scope of this manual be performed by ThermoProbe, Inc. or one of its authorized
distributors.
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