
LAB DIGITAL STEM THERMOMETER
USER’S MANUAL
DT310LAB
Visit us at www.TestEquipmentDepot.com
99 Washington Street
Melrose, MA 02176
Phone 781-665-1400
Toll Free 1-800-517-8431
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Please read this manual carefully and thoroughly before using this product.
INTRODUCTION
Thank you for purchasing General Tools & Instruments’
DT310LAB Lab Digital Stem Thermometer. Please read this
user’s manual carefully and thoroughly before using the
product.
The DT310LAB is ideal for spot-checking the temperature of
laboratory solutions and specimens, soil, and ambient or
forced air.
KEY FEATURES
• Wide temperature range
• Stainless steel probe
• Auto power off
• °F/°C switch
• Plastic sheath with metal pocket clip
WHAT’S IN THE BOX
The DT310LAB comes in a white box along with this user’s
manual. An “LR44” button battery with an activation tab is
preinstalled in the battery compartment.
OPERATING INSTRUCTIONS
Remove the thermometer from its sheath and press the
OFF/ON
(13mm) into the solid or liquid material whose temperature
you wish to measure. To measure the temperature of an
airstream, place the tip of the probe in the middle of the
stream.
At the factory, the DT310LAB was set to display temperature in
°C.
will “remember” your last selection when it powers off and will
resume using that unit upon restart. So if you always use the
same unit, you will never have to press the
To extend battery life, the DT310LAB has an Auto Power Off
(APO) feature that automatically powers off the thermometer if
no front-panel button is pushed within any span of 1 hour.
button. Insert the tip of the probe at least 1/2 in.
To switch to °F
, press the
°C/°F
button. The thermometer
°C/°F
button again.

SPECIFICATIONS
Measurement Range: -58° to 302°F (-50° to 150°C)
Measurement Accuracy: ±1.8°F (±1°C) between
-4° and 248°F (-20° and 120°C); ±3.6°F (±2°C) elsewhere
Measurement Resolution: 0.1° (F or C)
Probe Length: 8.38 in. (213mm)
Response Time: 1 second
Auto Power Off Trigger: 1 hour of front-panel inactivity
Operating Temperature: 14° to 122°F (-10° to 50°C)
Power Source: 1 “LR44” battery (included)
MAINTENANCE TIPS
To replace the battery:
1. Open the battery compartment by twisting the black plastic
cap at the end of the thermometer counterclockwise. Set
the cap aside.
2. Extract the dead or weak battery from the compartment.
3. Install a fresh “LR44” or “AG13” battery in the compartment
so its rounded side faces down and its flat side (with “+”
and “LR44” or “AG13” markings) faces up. Press on the
battery until it seats.
4. Replace the cap on the end of the thermometer and tighten
it by turning it clockwise.
Remove the battery if you do not expect to use the
thermometer for an extended period of time (months or years).
Do not put the thermometer inside a conventional oven or
microwave oven.
Keep the stainless steel probe clean. To clean the
thermometer’s plastic housing or LCD, use a dry or damp
cloth. Avoid using chemical cleaners.
RETURN FOR REPAIR POLICY
Every effort has been made to provide you with a reliable
product of superior quality. However, in the event your
instrument requires repair, please contact our Customer
Service to obtain an RGA (Return Goods Authorization) number
before forwarding the unit via prepaid freight to the attention
of our Service Center at this address:
Remember to include a copy of your proof of purchase, your
return address, and your phone number and/or e-mail
address.
NOTES
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WARRANTY INFORMATION
General Tools & Instruments’ (General’s) DT310LAB Lab Digital
Stem Thermometer is warranted to the original purchaser to
be free from defects in material and workmanship for a period
of one year. Subject to certain restrictions, General will repair
or replace this instrument if, after examination, the company
determines it to be defective in material or workmanship. The
warranty period begins on the date of purchase. You are
encouraged to register your product online. General will extend
your warranty an additional 60 days if you register at
www.generaltools.com/ProductRegistry.
This limited warranty does not apply to damages that General
determines to be from an attempted repair by non-authorized
personnel or misuse, alterations, normal wear and tear, or
accidental damage. The defective unit must be returned to
General Tools & Instruments or to a General-authorized service
center, freight prepaid and insured.
Register now at www.generaltools.com/ProductRegistry to
receive a 60-day extension to your warranty.
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99 Washington Street
Melrose, MA 02176
Phone 781-665-1400
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com
Specifications subject to change without notice
©2013 GENERAL TOOLS & INSTRUMENTS
NOTICE - WE ARE NOT RESPONSIBLE FOR TYPOGRAPHICAL ERRORS.
MAN# DT310LAB
9/27/13