FLIR Thermal Imager/IR Thermometer


A new class of IR thermometers with a thermal image!

See the Heat™ - Speed Troubleshooting FLIR’s Innovative Lepton® IR Imaging Engine

Instantly shows what’s hot and where to aim
Eliminates blind guesswork
24:1 spot size ratio for safer distance measuring
See the thermal image of your target

Grab and Go Simplicity

Fire It Up and Get to Work in Seconds

Intuitive to operate with no special training required

Easily save images and data for documentation

Download images fast over USB or from removable micro SD

Rugged and Reliable

Designed for the Harshest Environments

Built to withstand a 2 meter drop

Covered by FLIR’s exclusive 2-10 warranty

Compact and durable to easily stow in a crowded tool


FLIR TG165 Imaging IR Thermometer

The FLIR TG165 Imaging IR Thermometer bridges the gap between single spot infrared thermometers and FLIR’s legendary thermal cameras. Equipped with FLIR’s exclusive Lepton® micro thermal sensor, the TG165 lets you see the heat so you know where to reliably measure it. Easily find unseen hot and cold spots for instant troubleshooting, and store images and data to show customers and include in reports.


FLIR TG165 Imaging IR Thermometer – How it Works

Thermal imaging is one of the most powerful technologies ever developed to enhance visual perception. The unaided human eye can only perceive a very narrow band of visible light along the electromagnetic spectrum, which also includes radio and microwaves, infrared and ultraviolet light, X-Rays, and gamma rays. Thermal energy—or “heat”—resides within the infrared spectrum, which is invisible. However, a spot thermometer sensor is capable of converting thermal energy into a temperature measurement, and a thermal imaging detector converts thermal energy into an electronic thermal image that can be viewed on an LCD screen. The TG165 utilizes both of these types of infrared technology, simultaneously. The spot thermometer emits a beam of infrared light that lands on an object and then bounces back. The thermometer determines the object’s apparent surface temperature based on how much thermal energy the object is emitting, reflecting, or transmitting. The TG165’s thermal imager, on the other hand, includes a micro thermal camera that can passively scan an area and display images of hot and cold patterns on an LCD screen. Being able to “see” infrared radiation creates an entirely new level of awareness for professionals and consumers, alike. Users no longer have to guess where to take temperature readings. They can literally see hot and cold spots, making work more efficient and reliable. The TG165’s IR thermometer has a Distance-to-Spot ratio of 24:1. In other words, from a distance of 24 inches (61 cm), the TG165 can measure the temperature of a one-inch spot (2.5 cm). If you double the distance to 48 inches (122 cm) the spot diameter will expand to two inches (5 cm), and so on. The amount of thermal energy emitted by an object depends upon its temperature and how efficiently it radiates thermal energy. This efficiency is called “emissivity.” Emissivity values range from 0.1 for very reflective material—such as shiny metal—to 1.00 for a pipe with a flat black finish. The TG165 has both adjustable and preset emissivity settings, and the TG165 user’s manual includes a list of common materials and their respective emissivity factors as a quick reference for users who are not trained in thermography.


Find an Unseen World of Problems Ordinary Meters Miss

Bridging the gap between single spot IR thermometers and FLIR’s legendary infrared cameras, the TG165 gives you the advantage of thermal imaging to help you discover temperature issues you can’t see with typical spot radiometers. You’ll work more quickly and have confidence you won’t miss anything vital. Equipped with FLIR’s exclusive Lepton® micro thermal camera, the TG165 helps you identify heat patterns, reliably measure temperature, and store images and data for reports. And with a spot ratio of 24 to 1, you can take accurate readings from safer distances. The TG165 is simple to operate, featuring intuitive menu icons and dual laser pointers. Built by the world leader in thermal technology, the durable TG165 will quickly become your “go to” temperature tool.

Eliminates blind guesswork
FLIR’s innovative Lepton® IR imaging engine

Exclusive Patented Technology

First of it’s kind combination technology

Guidance system in the palm of your hands

Stay Safe

24:1 spot size ratio allows for safe distance measuring

Dual lasers visually mark target area

On screen crosshair pinpoints spot measurement

High temperature range from 13°F to 716°F(-25°C to 380°C)

Streamlines documentation

Saves images and measurements for reports

Direct download to computer

Included Micro SD card with Adapter

Save Delete and Review IR Images on screen

Typical Applications





Facility Maintenance

And more...

FLIR TG165 Image Resolution ComparisonVisual IR Thermometers by Application

FLIR infrared cameras make it easy to perform non-destructive inspections that isolate cold and warm air infiltration/exfiltration so necessary repairs and improvements can be made to tighten energy efficiency. FLIR thermal imagers can also instantly show temperature differences that verify what’s wet and what’s dry and are the IR inspection cameras preferred most by building experts for fast, reliable diagnosing of a full range of building applications, from energy audits and restoration to roofing and commissioning. In addition to the most advanced infrared cameras, FLIR offers building diagnostics training for an even faster ROI. Take the Level I Certified Building Investigations class offered by the Infrared Training Center (ITC)or one of ITC’s many other certified IR courses. Learn the art and science of using an infrared camera to get the most out of your thermal imaging investment.Thermal imaging detects the infrared energy of any surface and produces a detailed image showing its temperature profile. Non-destructive and non-contact, the technology provides a safer, more cost-effective way to evaluate a building’s performance. It also has proven to be very effective and accurate tool for facility predictive maintenance (PdM) programs. With thermal imager in hand, HVAC specialists and plumbing professionals get to see the heating and cooling issues in a whole new way. Since your profession is primarily about temperature control, why wouldn’t you use a tool that helps you visualize the problems that your customers can feel and are complaining about? You’ll be able to check air balance easier, locate air leaks and misrouted ductwork faster, and check for weatherization and other wasteful energy loss issues to confirm it’s not the furnace or AC that’s the culprit. Plus plumbers can use the tool to find clogs in drain pipes, locate hot and cold water lines in walls, and more. From start to finish, FLIR infrared cameras can help you simplify your restoration and remediation jobs. Advanced features help you quickly scan large areas to assess what is restorable. An infrared camera helps you pinpoint water intrusion, find moisture beneath the surface, and document dryness with accuracy and confidence.

Easy Reporting - Busy restoration professionals can speed up surveys with the automated humidity alarms. Reporting is also simple since a FLIR camera includes software that supports templates, spell-check, and easy conversion of reports and images to PDF format for trouble-free emailing.


Usually Ships in 1 to 2 Weeks

  • Availability

    Usually Ships in 2 to 4 Weeks

    Cannot Ship outside USA