Extech Instruments IRT500 User Manual
USER GUIDE
IR Thermal Scanner
Model IRT500
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Introduction
Thank you for selecting the Extech Model IRT500. The IRT500 Dual Laser IR Thermal Scanner is
designed with a dual laser, an audible/visual alarm, 5 preset threshold settings, and a 3 color LED
indicator that helps locate hot and cold spots more easily. This device is shipped fully tested and
calibrated and, with proper use, will provide years of reliable service. Please visit our website
(www.extech.com) to check for the latest version of this User Guide. The Extech Instruments brand,
a wholly owned subsidiary of FLIR Systems, Inc., is ISO-9001 certified.
Safety
Use extreme caution when the laser pointer beam is on
Do not point the beam toward anyone's eye or allow the beam
to strike the eye from a reflective surface
Do not use the laser near explosive gases or in other
potentially explosive areas
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Meter Description
1. LCD display
2. Red, Green, Blue limit indicator LED
3. Momentary press: Audible Alarm ON/OFF button
2 second press: Select °C or °F button
4. SET button: Set alarm deviation from reference value
5. Momentary press: Laser pointer ON/OFF button
2 second press: Select MAX/MIN display button
6. Battery compartment
7. Power ON trigger
Momentary press: Display Hold ON/OFF trigger
2 second press: Power OFF trigger
8. Laser pointers (2)
9. Infrared sensing window
Display Description
1. SET and MAX/MIN display
2. Temperature display
3. Reference value display
4. HOLD, Laser active, Buzzer On/Off and Low Battery icons
5. Bargraph
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