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User Manual
Extech Model IR320
Waterproof, Dual Laser IR Thermometer with Alarm
1. Introduction
Thank you for selecting the Extech IR320 IR Thermometer. The IR320 is a professional non-contact infrared thermometer
that measures surface temperature from infrared energy radiated by the target’s surface. We ship this meter fully tested
and calibrated and, with proper use, it will provide years of reliable service. Please visit our website (www.extech.com)
for the latest version of this User Manual and Customer Support.
2. Product Features
Strong and Durable: 3m (9.8 ft.) drop-proof
Dustproof and Waterproof: IP65
Ergonomic Design: Comfortable handheld, simple and convenient operation
MAX/MIN/AVG/DIF values: Quickly display the Maximum, Minimum, Average (running average updates every two
readings), and Differential (Max minus Min) values
Large Backlit LCD
Tripod mount for hands-free operation
Alarm Function: High/Low temperature alarm provides flashing color-coded LED indicators when triggered
Dual Laser Pointers: To enhance measurement target accuracy
3. Safety Instructions
WARNING
To avoid personal injury, please read the following safety information before using this product:
Safety Standards Compliance:
CE Identification: EN 61326-1: 2013, EN 61326-2-3: 2013
Laser Safety Standard: Complies with 21 CFR 1040.10 and 1040.11 except for deviations pursuant to
laser notice no. 50 dated June 24, 2007
Please do not point the laser toward people or animals directly or indirectly.
Please do not look at the laser directly or through other optical tools (telescope, microscope, etc.).
If the battery symbol on the LCD display is flashing, replace the batteries immediately to avoid
inaccurate measurements.
Before using the product, check the product for damage. Do not use this product if obvious physical
damage is apparent.
Refer to the Table of Emissivity Factors for Common Materials in this manual before taking
measurements. Reflective objects will cause the measured value to be lower than the actual
temperature value. Set the emissivity to match each given surface type. When measuring, please do not
touch high temperature surfaces.
Do not use this product near explosive gases.
To ensure measurement accuracy, place this product in the test environment for more than 30 minutes
before use.
Avoid keeping the thermometer near high temperature objects for long periods.
