FLIR K33
An easy-to-use thermal imaging camera that offers affordability without sacrificing the reliability, clarity, or performance that first responders expect from FLIR. Patented FSX® Flexible Scene Enhancement intensifies the structural and textural detail in the thermal image, and FLIR built it to be affordable enough for crews to have multiple TICs in use at a fire scene.
From heat to picture, with the edges drawn in
Resolution of 240 × 180, a 60 Hz frame rate and a bright 4" LCD help you see more in smoky conditions. Here is what each link in that chain does, and where FSX® fits.
43,200 thermal pixels with a thermal sensitivity of <40 mK @86°F (30°C), behind a fixed-focus 51° × 38° lens.
FLIR FSX digital processing adds edge detail for greater perspective and increased navigational capabilities.
Rapid refresh-rate (60 Hz) for better on-scene orientation.
Bright and easy to see 4" LCD display.
“FSX® Flexible Scene Enhancement … intensifies thermal images' structural and textural details.”FLIR
- What it is
FLIR's patented image processing, listed as Contrast optimization: Digital image enhancement using FSX, built into the camera.
- What it does
It brings out the structure and texture in a thermal scene and adds edge detail for greater perspective and increased navigational capabilities.
- Why it matters
FLIR says the enhanced perspective and greater orientation improves firefighters' tactical decision-making, and helps improve situational awareness and give firefighters a greater sense of confidence and safety.
What it reads, what it can take
Two different numbers that are easy to mix up. Object temperature range is how hot a surface in the scene can be and still be measured. Operating temperature is how much heat the camera itself is rated to work in, and for how long.
- -4°F to 302°F (-20°C to 150°C)
- 32°F to 1202°F (0°C to 650°C)
- -4°F to 140°F (-20°C to 60°C): infinity
- 302°F (150°C): 15 min.
- 500°F (260°C): 5 min.
Bars drawn to scale.
- IP67Water-resistant, IP 67 (IEC 60529)
- 2 mDrop onto a concrete floor, 6.6 ft (IEC 60068-2-31)
- 25 gShock (IEC 60068-2-27); vibration 2 g (IEC 60068-2-6)
- Mg alloyFlame-resistant magnesium alloy, PPSU, silicon rubber and cast aluminium
One button on, one trigger to freeze
The K33 has one imaging mode: TI Basic, the fire-fighting mode. One glove-friendly button starts the camera in that mode, and the trigger freezes what you see.
Glove-friendly button
One glove-friendly button starts the K33 in TI-Basic mode. Simple, single-button control; straightforward operation.
TI Basic picture
The image runs on a fixed color scale with FSX® enhancement, refreshing at 60 Hz across a 51° × 38° field of view.
Pull and hold
Pulling and holding the trigger freezes the image on screen.
FLIR Tools® on a PC
Connect over USB mini-B to update from PC and transfer data to and from a PC. Auto-range is selectable on/off in FLIR Tools.
K2 vs K33, side by side
The K33 steps up from the K2 in resolution, thermal sensitivity, field of view and the top of its measurement range.
| Specification | K2 | K33 |
|---|---|---|
| IR resolution | 160 x 120 | 240 x 180 |
| Thermal sensitivity | <100 mK @ 86°F | <40 mK @ 86°F |
| Field of view (FOV) | 47° × 35° | 51° × 38° |
| Object temperature range | -4°F to 302°F, 32°F to 932°F (-20°C to 150°C, 0°C to 500°C) | -4°F to 302°F, 32°F to 1202°F (-20°C to 150°C, 0°C to 650°C) |
| Live streaming | - | - |
| Part number | 73701-0101 | 72203-0411 |
FLIR K33 specs
| Thermal imaging | |
|---|---|
| IR resolution | 240 × 180 (43,200 pixels) |
| Thermal sensitivity / NETD | <40 mK @86°F (30°C) |
| Refresh rate | 60 Hz |
| Focal plane array | Uncooled microbolometer, 7.5–13 µm |
| Detector pitch | 25 µm |
| Start-up time | <17 sec (IR image, no GUI) |
| Optics | |
| Field of view | 51° × 38° |
| Focal length | 9 mm (0.35 in.) |
| f-number | 1.25 |
| IFOV | 3.6 mrad |
| Focus | Fixed |
| Depth of field | 0.84 m to infinity (33 in. to infinity) |
| Image presentation | |
| Image modes | Fixed color scale, TI Basic (TI Basic fire-fighting mode) |
| Flexible Scene Enhancement (FSX®) | Yes. Contrast optimization: Digital image enhancement using FSX |
| Measurement | |
|---|---|
| Object temperature range | -4°F to 302°F (-20°C to 150°C); 32°F to 1202°F (0°C to 650°C) |
| Accuracy | ±7.2°F (±4°C) or ±4% of reading for ambient temperature 50°F to 95°F (10°C to 35°C) |
| Spotmeters | 1 |
| Isotherm | Yes |
| Auto-range | Yes, selectable on/off using FLIR Tools® |
| Display | |
|---|---|
| Display | 320 × 240 pixel, 4 in backlit LCD |
| Image freeze | Configurable |
| Data & connectivity | |
| Image storage | No JPEG storage |
| USB | USB mini-B |
| USB functions | Update from PC devices, data transfer to and from PC |
| Video streaming | Non-radiometric IR video streaming: Uncompressed colorized video using USB |
| Software | Compatible with FLIR software: FLIR Tools® |
| Languages | English |
| Battery | |
|---|---|
| Battery type | Li-ion, 3.6 V rechargeable |
| Battery capacity | 6.2 Ah, at 20°C to 25°C (68°F to 77°F) |
| Battery operating time | >5 hours at 25°C (77°F) ambient temperature and typical use |
| Charging & power | |
| Charging time | 2 h to 85% capacity, charging status indicated by LEDs |
| Charging | Battery is charged inside the camera; 2-bay charger |
| Power management | Automatic shutdown and sleep mode |
| Power supply safety | CE/EN/UL/CSA/PSE 60950-1 |
| Environment | |
|---|---|
| Operating temperature | -20°C to 60°C (-4°F to 140°F): infinity / 150°C (302°F): 15 min. / 260°C (500°F): 5 min. |
| Storage temperature | -40°F to 185°F (-40°C to 85°C) |
| Encapsulation | IP 67 (IEC 60529) |
| Drop | 2 m (6.6 ft.) on concrete floor (IEC 60068-2-31) |
| Shock | 25 g (IEC 60068-2-27) |
| Vibration | 2 g (IEC 60068-2-6) |
| Humidity | IEC 60068-2-30/24 h 95% relative humidity +25°C to +40°C (+77°F to +104°F) / 2 cycles |
| EMC |
|
| Magnetic fields | EN 61 000-4-8, Test level 5 |
| Designed to meet specifications for | Vibration · Impact acceleration resistance · Corrosion · Viewing surface abrasion · Heat resistance · Heat and flame · Product label durability |
| Physical | |
| Weight | 1.1 ±0.05 kg (2.4 ±0.1 lb.) |
| Size (L × W × H) | 4.7 × 4.9 × 11 in (120 × 125 × 280 mm) |
| Tripod mount | UNC ¼"-20 (adapter needed) |
| Materials | PPSU · Silicon rubber · Aluminium, cast · Flame-resistant magnesium alloy |
| FLIR part number | 72203-0411 |
| Package contents | |
|---|---|
| Included |
|
Downloads & service
FLIR documents and FarrWest service information.
K33 / K53 datasheet
Covers both the K33 and the K53. Features marked "K53 model only" do not apply to the K33.
Comparison · PDFKxx Series matrix
FLIR Kxx Series product comparison matrix.
Warranty · PDFFLIR 2-5-10 warranty
FLIR Fire Service 2-5-10 Limited Warranty terms, including registration requirements.
ServiceFarrWest Repair Depot
OEM-certified service and support on every product we deliver. When a repair or calibration falls outside our in-house scope, we coordinate directly with the third-party manufacturer and manage the logistics end to end.
K33 questions
What does FSX® actually do?
Can the K33 record images or video?
Does it stream video live?
How hot can the camera get and keep working?
How long does the battery last, and how is it charged?
How does the K33 compare with the FLIR K2?
How rugged is it?
What warranty does FLIR offer?
Buying from FarrWest
BuyBoard & PCA vendor
FarrWest is a pre-approved vendor on BuyBoard and Purchasing Cooperative of America (PCA). Government agencies can buy on competitively-bid cooperative contracts, with no lengthy RFP.
ServiceService after the sale
OEM-certified service and support on every product we deliver: functional checks and certified calibration on the manufacturer’s required cycle, back in service in 48–72 hours typical.
Since 2004Woman-owned, HUB-certified
Serving Hazmat, Fire, Police, EMS, and Specialty Vehicle operations nationwide since 2004, with expert support, training, and service after the sale.
Put a TIC in more hands
Tell us how many cameras your crews need and whether you are weighing the K33 against the K2.