Description
Greenlee TG-150, TG-250, and TG-350 temperature guns are hand-held surface temperature
sensing devices. The non-intrusive measuring capability of these units is safer and quicker
than other methods, and is well suited to checking the surface temperature of circuit breakers,
motors, HVAC/R equipment, engines, etc.
These devices measure surface temperature by gathering three forms of infrared energy —
emitted, transmitted, and reflected — from an object and translating that energy into a
temperature.
These temperature instruments include the following features:
• Laser sighting. The laser produces nine separate spots — eight that form a circle to indicate
the target area, and one that indicates the center of the target.
• Probe jack. Allows the temperature gun to record direct temperature measurements with
the use of a temperature probe (purchased separately).
• Trigger lock. For long-term temperature measurement, the trigger can be locked in the ON
position.
• Tripod mount. A threaded hole (1/4–20 UNC) provides a method for tripod mounting for
long-term temperature measurement.
Safety
Safety is essential in the use and maintenance of Greenlee tools and equipment. This
instruction manual and any markings on the tool provide information for avoiding hazards and
unsafe practices related to the use of this tool. Observe all of the safety information provided.
Purpose
This instruction manual is intended to familiarize all personnel with the safe operation and
maintenance procedures for the Greenlee TG-150, TG-250, and TG-350 temperature guns.
Keep this manual available to all personnel.
Replacement manuals are available upon request at no charge.
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are registered trademarks of Greenlee Textron.
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