Xi 640

The Optris Xi 640 is an industrial USB infrared camera that offers innovation and affordability in non-contact thermal imaging. With high-resolution thermal imaging (640 x 480 pixels) and a temperature range from -20°C to 900 °C, it is designed to operate within the long-wavelength infrared range (LT: 8 – 14 µm). This forward-looking camera is engineered and manufactored in Germany to capture measurement data for precise surface temperature analysis in industrial settings. The Xi 640 thermal camera embodies compactness, waterproof, and rugged design, ideal for demanding industrial environments.

• Industrial USB infrared camera
• Small-sized, ruggedized with motorized focus
• High pixel resolution of 640x480


Scope of Supply:
Process imager Xi 640
USB cable (1 m)
Cable for output/input (1 m) incl. terminal block
Mounting bracket with nut
Software package optris PIX Connect
Quick Start Guide

DETECTOROptical resolution640×480 pixels
Pixel pitch12 µm
DetectorUncooled bolometer
Spectral rangeLT: 8 – 14 µm
Optical FilterNo
Frame rate32 Hz
OPTICALField of View22°x17°36°x26°65°x45
Focal length [mm]20138
F Number1.10.90.9
Optical Resolution550:1350:1210:1
Minmum Distance to target350 mm350 mm250 mm
Interchangeable opticsNo
MEASUREMENTObject Measurement Range–20 … 100 °C; 0 … 250 °C; (20) 150 … 900 °C*1)
Accuracy±2 °C or ±2 %, whichever is greater
Thermal Sensivitiy (NETD)80mK
Smallest detectable Spot Size IFOV: 1 pixel0.3mm0.5mm0.7mm
Smallest measureable Spot Size MFOV1.2mm2.0mm2.8mm
Measurement Field of View (MFOV)4×4 pixels
Warm-up time10 min
Emissivity /Transmissivity/ Reflectivityadjustable: 0.100…1.100
optional: USB GigE (PoE) interface
Supported ProtocolsUSB 2.0
Compatible SoftwarePIXConnect, EasyComm, ConnectSDK, EasyAPI, DirectSDK
ANALOG INPUT/OUTPUTDirect output/input1x analog output (0/4-20 mA)
1x input (analog or digital); optically isolated
Optional Industrial Process interface (PIF)2x 0 – 10 V input, digital input (max. 24 V),
3x 0/4 – 20 mA outputs, 3x relay (0 – 30 V/ 400 mA), fail-safe relay
Cable lengthUSB: 1 m (standard), 3m , 5 m , 10 m
IMAGE PROCESSINGConfigurationvia PIXConnect
Measure Areas of Interest, Linescanner, EventGrabber, Merger, Alarming, Comparison Functions, Temperature-Time Diagrams, Temperature Profiles, Recording & Playing, Triggering
GENERALSizeØ 36 mm x 100 mm, thread: M30x1
Housing MaterialStainless steel
Weight216 – 220 g, depending on lens (without mounting bracket)
Tripod1/4-20 UNC
Country of OriginGermany
ENVIRONMENTAL & CERTIFICATIONSOperating Temperature Range0…50°C
Storage Temperature Range-40…70 °C
Relative humidity10 – 95 %, non-condensing
Protection ClassIP67, NEMA-4
ShockIEC 60068-2-27 (25 G and 50 G)
VibrationIEC 60068-2-6 (sinus shaped)
IEC 60068-2-64 (broadband noise)
StandardsCE, UKCA, RoHS
POWERPower SupplyUSB
Power Consumptionmax. 2.5 W
Part number

The Xi 640 is an advanced USB high-resolution IR camera. It is often used stationary and fixed installed settings to monitor production and manufacturing processes.

Thermography software optris PIX Connect is included and license-free.

All infrared cameras are delivered with the thermography software optris PIX Connect, developed specifically for the extensive documentation and analysis of thermal images. The Windows-based PIX Connect software enables users to tailor the infrared cameras to meet specific requirements. It analyses live and recorded temperature data and triggers alarm signals for process integration.

The key to leveraging the Optris infrared camera is a correct configuration. This includes detailed device-specific configurations such as frame rate, measurement range adjustments, external communication settings, and USB/Ethernet configurations. Moreover, PIX Connect facilitates firmware updates and the download of configuration files over the Internet.


Optris offers several different SDKs for our Xi and PI thermal imaging cameras. Depending on the operating platform, the infrared camera, the coding language, and the hardware platform, different software interfaces can be utilized:


The Optris IRmobile allows users to set up and commission an Optris infrared pyrometer or infrared camera with an Android smartphone or tablet. This tool becomes handy for commissioning and aligning the infrared camera’s field of view or adjusting the configuration. The app analyzes the connected infrared camera’s live infrared image stream with auto hot and cold spot detection. For pyrometers, a temperature-time diagram or the video signal is displayed. This app works on most Android devices running 5.0+ with a USB port supporting USB-OTG (On The Go).

IRmobile App

All optris infrared cameras are compatible with the Data Acquisition (DAQ) Software Dewesoft X. DewesoftX is an award-winning data acquisition and signal processing software. It is heavily used for numerous test & measurement applications across all markets. DewesoftX is a popular tool for signal measurement, data recording, signal processing, and data visualization.