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PI Series

Fixed Thermal Camera for Precision Infrared Imaging

Optris PI series for industrial infrared temperature measurement infrared sensors and cameras for industrial process monitoring

The Optris PI series is a family of radiometric fixed thermal cameras designed for stationary thermography in industry, research, and development. It includes general-purpose LT models at 8–14 µm, the glass-optimized G7 at 7.9 µm, and the short-wavelength models for metals and high-temperature targets. There are also options suitable for laser processes. The frame rates reach approximately 32–125 Hz in LWIR and up to 1 kHz in short-wave devices, enabling the capture of both slow trends and rapid changes. The Precision Line emphasizes image quality, a small MFOV, and precise radiometric temperature accuracy. Each fixed thermal camera connects through USB 2.0 and works with PIX Connect for data acquisition, analysis, alarms, and I/O mapping. The compact IP67 housings support interchangeable optics, ranging from wide-angle to microscope, with manual focus.

Long wavelength IR cameras

Short wavelength IR cameras

Narrowband IR cameras

Which Is the Right Infrared Camera?

Click here to find the product that suits your demands.

Why Thermal Cameras of the Precision Series?

  • Temperature ranges from –20 °C to 2450 °C​
  • High thermal sensitivity (down to 20 mK NETD)
  • High optical resolution (up to 764 x 480 px)​
  • Suited for fast processes (up to 1 kHz)
  • Different spectral ranges (500 nm / 800 nm / 1 μm / 7.9 μm / 8 µm – 14 μm)​
  • Interchangeable lenses
  • Laser blocking filters​

The Optris PI Precision Line embodies precision, accuracy, repeatability, and innovation of non-contact infrared cameras. This series of thermal imagers set the industry standard for high-performance thermal imaging solutions for various industrial applications.

The fixed-mounted temperature camera proves its high performance in delivering accurate infrared surface temperature measurements across diverse industrial environments due to superior optic design, state-of-the-art uncooled thermal detectors, and powerful software processing capabilities.

The temperature ranges covered by the infrared camera are extensive, spanning from -20 °C to 2450°C. This wide range ensures that the thermal cameras are suitable for various applications around non-contact temperature sensing.

The Optris PI Precision Line offers and infrared camera for each spectral range, including 500 nm to 800 nm, 1 μm, 7.9 μm, and 8 µm – 14 μm. This adaptability allows users to choose the fixed-installed thermal imager with the most suitable spectral range for their specific application, enhancing the precision and reliability of the thermal imaging data.

Each high-resolution IR camera supports and interchangeable lens, ensuring versatility in capturing thermal images with different fields of view in various industrial processes or research applications. The sophisticated optical design of the lens ensures high-quality infrared image quality. It allows a tiny Measurement Field of View (MFOV), the size of the smallest object that is accurately measured within the customizable field of view at a set distance. and Optris PI Precision Line infrared camera features optionally infrared microscope optics for magnified temperature analysis of the smallest details.

The infrared optical performance of such a high-resolution IR camera is further accentuated by its high optical resolution, reaching up to 764 x 480 pixels. This level of detail ensures that professionals across industries rely on the infrared cameras of the Optris PI Precision Line for intricate thermal analysis and monitoring. The optional inclusion of wavelength-blocking filters within the thermal imager enhances the cameras ability to filter unwanted interference, maintaining the accuracy of temperature readings and providing exceptional clarity and detail in thermal images, ensuring that every temperature variation is captured with utmost precision.

Designed to meet the demands of fast-paced processes, the thermal imager can boast a remarkable sampling frequency of up to 1 kHz. This ensures that even in dynamic environments, infrared cameras can swiftly capture temperature variations with unparalleled speed and accuracy. The high thermal sensitivity, reaching 40 mK NETD (Noise Equivalent Temperature Difference), sets the benchmark for precise temperature measurement.

Engineered and manufactured in Germany with industrial precision in mind, the Optris PI thermal cameras are designed to meet the rigorous demands of various sectors at high quality.

In conclusion, the Optris PI Precision Line is a testament to innovation and excellence in infrared technology for non-contact temperature measurement. The infrared cameras operate across short-wavelength, mid-wavelength, and long-wavelength infrared bands. With its interchangeable lenses, superior optical design, and suitability for fast processes, this series provides a comprehensive solution for professionals seeking the highest standards in thermal imaging and temperature sensing. The laser-blocking filters, wide temperature ranges, infrared microscope optics and powerful software further solidify its position as a go-to choice for industries where precision, accuracy, and adaptability are paramount.

Spectral Ranges That Fit the Process

The PI Series provides multiple spectral ranges, allowing the sensor band to match specific material properties and process conditions. Selecting the right wavelength band reduces emissivity uncertainty, minimizes background reflections, and improves signal-to-noise at target temperatures. Shorter wavelengths are ideal for very hot, reflective targets, while longer wavelengths suit coated, painted, or polymer surfaces. Specialized bands are available for semi-transparent materials and thin films. Proper spectral selection also rejects interference from ambient radiation, process glare, and combustion byproducts, resulting in cleaner radiometric data. When combined with calibrated optics and precise spot-size guidelines, this flexibility ensures stable temperature readings and enhanced feature contrast across various applications.

Built for Speed: Up to 1 kHz

The PI Series is built for speed. LWIR models stream full-frame thermography at 32–80 Hz, with a 125 Hz subframe on PI 640i for higher temporal resolution. Short-wavelength variants offer subframe and line-scan modes up to 1 kHz. This acquisition range captures slow thermal drifts and rapid transients with minimal motion blur. It supports real-time alarming, trend analysis, and closed-loop control. Short integration times and low readout latency preserve radiometric fidelity at high throughput. Hardware triggers and stable time stamps enable synchronized measurements with external processes.

High Dynamic Range, High Confidence

The PI Series offers a wide temperature range and fine resolution, ensuring reliable radiometry for diverse applications. Its calibrated ranges span from sub-ambient to extreme heat, while high dynamic range maintains accuracy throughout. Low noise enables detection of subtle gradients and early hot-spot formation, supporting predictive maintenance and process optimization. Consistent repeatability and precise timing support trend analysis and closed-loop control. The optics and configuration keep the MFOV compact, ensuring precise spot readings without background interference. This results in clear, traceable temperature data for both routine monitoring and high-temperature processes.

Thermography Software PIX Connect and OTC SDK

Precision Line thermal cameras work directly with PIX Connect and the OTC SDK, supporting immediate use and advanced integration. PIX Connect enables live radiometric imaging, recording, region setup, alarms, and remote configuration, allowing users to commission and analyze systems without requiring custom development. For embedded applications, the OTC SDK provides access to device controls and calibrated temperature data, including pixel arrays, statistics, regions, and emissivity. Developers can synchronize triggers, log events, and connect to PLCs or databases.

Wide Range of Industrial Accessories

Optris PI accessories enhance durability, integration, and optical control. The CoolingJacket Advanced supports operation in high-temperature areas by combining water cooling with an air purge to maintain a clean window. An extended version includes a USB-to-Ethernet server for headless installations. Protective housings and outdoor enclosures offer weather and dust protection, while replaceable IR windows protect optics in abrasive settings. Adjustable mounting brackets and metric adapters provide stable alignment on machines or tripods. For process connectivity, the standard PIF and Industrial PIF offer analog I/O, 4–20 mA, relays, and fail-safe signaling to PLCs. Cable extensions, strain-relief options, and lens caps support rugged deployments.

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