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The Optris Xi 640 LT USB is a high-resolution fixed thermal camera built for precise temperature monitoring in industrial environments. The fixed infrared camera with USB interface works in the long-wave infrared spectrum and measures temperatures from –20 °C to 900 °C. The detector records thermal images at 640 × 480 pixels with a frame rate of 32 Hz. Moreover, a motorized focus enables remote adjustment and ensures accurate surface readings, even in hard-to-reach installations. In addition, the compact design, stainless steel housing, and IP67 protection keep the device reliable in tough conditions. As a result, multiple mounting and cable options simplify installation in many different setups.
The Xi 640 LT USB stationary infrared camera uses an uncooled microbolometer detector. It integrates smoothly with industrial systems through analog and digital outputs as well as a configurable process interface for alarms, synchronization, and control. For added flexibility, developers can use available kits to build custom software solutions.
When combined with PIX Connect software, the Xi 640 LT thermal USB camera gains advanced functions such as line scanning, image merging, and analysis tools for research and engineering. In particular, the software allows users to adjust focus, emissivity, and measurement areas, so temperature monitoring can be tailored to specific applications.
Additionally, a wide range of accessories extends the thermal camera’s use in harsh environments. For example, water-cooled housings permit operation at ambient temperatures up to 250 °C, while air purge systems keep the lens clear of dust and fumes. Other options, including optical shutters, mounting brackets, and extended cables, ensure reliable performance in demanding setups.
Therefore, the Optris Xi 640 LT USB thermal camera combines high resolution, robust construction, and versatile connectivity. Manufactured in Germany, it supports accurate, continuous, and non-contact temperature measurement for both industrial and research applications.
Xi 640 LT USB - Fixed Infrared Camera - Important Features:
- Industrial USB VGA infrared camera
- Small-sized, ruggedized with motorized focus
- High pixel resolution of 640 x 480
- USB interface
| MODEL | Xi 640 LT USB 22° x 17° | Xi 640 LT USB 36° x 26° | Xi 640 LT USB 65° x 45° |
| DETECTOR | |||
| Optical resolution | 640x480 pixels | 640x480 pixels | 640x480 pixels |
| Pixel pitch | 12 µm | 12 µm | 12 µm |
| Detector | Uncooled bolometer | Uncooled bolometer | Uncooled bolometer |
| Spectral Range | 8 - 14 µm | 8 - 14 µm | 8 - 14 µm |
| Optical Filter | No | No | No |
| Frame rate | 32 Hz | 32 Hz | 32 Hz |
| OPTICAL | |||
| Field of View | 22° x 17° | 36° x 26° | 65° x 45° |
| Focal length [mm] | 20.0 | 12.7 | 7.7 |
| F Number | 1.1 | 0.9 | 0.9 |
| Distance to Spot Ratio (D:S) | 550:1 | 350:1 | 210:1 |
| Minimum Distance to target | 350 mm | 350 mm | 250 mm |
| Interchangeable optics | No | No | No |
| MEASUREMENT | |||
| Object Measurement Range | -20 – 900 °C | -20 – 900 °C | -20 – 900 °C |
| Accuracy | ±2 °C or ±2 %, whichever is greater | ±2 °C or ±2 %, whichever is greater | ±2 °C or ±2 %, whichever is greater |
| Thermal Sensitivity (NETD) | 80mK | 80mK | 80mK |
| Smallest detectable Spot Size IFOV: 1 pixel | 0.3 mm | 0.5 mm | 0.7 mm |
| Smallest measurable Spot Size MFOV | 1.2 mm | 2.0 mm | 2.8 mm |
| MFOV Measurement Field of View | 4x4 pixels | 4x4 pixels | 4x4 pixels |
| Warm-up time | 10 min | 10 min | 10 min |
| Emissivity /Transmissivity/ Reflectivity | adjustable: 0.100…1.100 | adjustable: 0.100…1.100 | adjustable: 0.100…1.100 |
| INTERFACES | |||
| Interface | USB optional: USB GigE (PoE) interface | USB optional: USB GigE (PoE) interface | USB optional: USB GigE (PoE) interface |
| Supported Protocols | USB 2.0 | USB 2.0 | USB 2.0 |
| Compatible Software | PIX Connect, ConnectSDK, EasyAPI, DirectSDK | PIX Connect, ConnectSDK, EasyAPI, DirectSDK | PIX Connect, ConnectSDK, EasyAPI, DirectSDK |
| ANALOG INPUT/OUTPUT | |||
| Direct output/input | 1x analog input (0 – 10 V) 1x digital input (max. 24 V) 1x analog output (0 – 10 V) | 1x analog input (0 – 10 V) 1x digital input (max. 24 V) 1x analog output (0 – 10 V) | 1x analog input (0 – 10 V) 1x digital input (max. 24 V) 1x analog output (0 – 10 V) |
| Optional Industrial Process interface (PIF) | 2 x analog inputs (0–10 V) 1 x digital input (max. 24 V) 3x analog outputs (0/4-20 mA) or relais (0–30 V / 400 mA) 1x fail-safe (LED and relay) electrically isolated | 2 x analog inputs (0–10 V) 1 x digital input (max. 24 V) 3x analog outputs (0/4-20 mA) or relais (0–30 V / 400 mA) 1x fail-safe (LED and relay) electrically isolated | 2 x analog inputs (0–10 V) 1 x digital input (max. 24 V) 3x analog outputs (0/4-20 mA) or relais (0–30 V / 400 mA) 1x fail-safe (LED and relay) electrically isolated |
| Cable length | USB: 1 m (standard), 3 m, 5 m, 10 m, 20 m | USB: 1 m (standard), 3 m, 5 m, 10 m, 20 m | USB: 1 m (standard), 3 m, 5 m, 10 m, 20 m |
| IMAGE PROCESSING | |||
| Configuration | via PIX Connect | via PIX Connect | via PIX Connect |
| Operation | Computer-enabled | Computer-enabled | Computer-enabled |
| Capabilities | Measure Areas of Interest, Linescanner, EventGrabber, Merger, Alarming, Comparison Functions, Temperature-Time Diagrams, Temperature Profiles, Recording & Playing | Measure Areas of Interest, Linescanner, EventGrabber, Merger, Alarming, Comparison Functions, Temperature-Time Diagrams, Temperature Profiles, Recording & Playing | Measure Areas of Interest, Linescanner, EventGrabber, Merger, Alarming, Comparison Functions, Temperature-Time Diagrams, Temperature Profiles, Recording & Playing |
| GENERAL | |||
| Size | Ø 36 mm x 100 mm, thread: M30x1 | Ø 36 mm x 100 mm, thread: M30x1 | Ø 36 mm x 100 mm, thread: M30x1 |
| Housing Material | Stainless steel | Stainless steel | Stainless steel |
| Weight | 216 - 220 g, depending on lens (without mounting bracket) | 216 - 220 g, depending on lens (without mounting bracket) | 216 - 220 g, depending on lens (without mounting bracket) |
| Tripod | 1/4-20 UNC | 1/4-20 UNC | 1/4-20 UNC |
| Focus | Motorized | Motorized | Motorized |
| Country of Origin | Germany | Germany | Germany |
| ENVIRONMENTAL & CERTIFICATIONS | |||
| Operating Temperature Range | 0...60 °C | 0...60 °C | 0...60 °C |
| Storage Temperature Range | -40...70 °C | -40...70 °C | -40...70 °C |
| Relative humidity | 10 – 95 %, non-condensing | 10 – 95 %, non-condensing | 10 – 95 %, non-condensing |
| Protection Class | IP67, NEMA-4 | IP67, NEMA-4 | IP67, NEMA-4 |
| EMC | 2014/30/EU | 2014/30/EU | 2014/30/EU |
| Shock | IEC 60068-2-27 (25 G and 50 G) | IEC 60068-2-27 (25 G and 50 G) | IEC 60068-2-27 (25 G and 50 G) |
| Vibration | IEC 60068-2-6 (sinus shaped), IEC 60068-2-64 (broadband noise) | IEC 60068-2-6 (sinus shaped), IEC 60068-2-64 (broadband noise) | IEC 60068-2-6 (sinus shaped), IEC 60068-2-64 (broadband noise) |
| Standards | CE, UKCA, RoHS | CE, UKCA, RoHS | CE, UKCA, RoHS |
| POWER | |||
| Power Supply | USB | USB | USB |
| Power Consumption | max. 2.5 W | max. 2.5 W | max. 2.5 W |
| Part number | OPTXI64LTO22T090 | OPTXI64LTO36T090 | OPTXI64LTO65T090 |
| Additional Remarks | 1) Accuracy statement effective from 150 °C | 1) Accuracy statement effective from 150 °C | 1) Accuracy statement effective from 150 °C |