The Optris CTfast LT pyrometer quickly captures non-contact temperature data remotely. Its remarkably short response time of 6 ms makes it an ideal choice for applications requiring speedy measurements. Whether in industrial processes demanding rapid assessments or research settings mandating precise temperature control, the CTfast LT pyrometer delivers consistent performance. Its adaptability and accuracy are tailored to be the sensing input for fast control loop applications. It offers fast analog output options with smart data processing, alongside instant digital output with a response time of 4 ms (50% signal). Additionally, its rugged construction allows operation in ambient temperatures of up to 120 °C without the need for cooling, ensuring resilience in challenging conditions.
The Optris CTfast LT pyrometer efficiently captures non-contact temperature data remotely, boasting an impressively short response time of 6 ms, ideal for applications requiring rapid measurements. Whether in industrial processes needing swift assessments or research settings demanding precise temperature control, the CTfast LT consistently delivers top-notch performance. Its adaptability and accuracy are tailored for fast control loop applications, offering rapid analog output options with smart data processing and instant digital output with a response time of 6 ms. Additionally, this pyrometers rugged construction allows operation in ambient temperatures of up to 120 °C without cooling, ensuring resilience in challenging conditions.
Equipped with one of the world’s smallest infrared sensing heads and a high optical resolution of up to 25:1, the pyrometers of the Optris CTfast LT series excel in infrared measurement of high-emissivity targets even at low object temperatures in fixed installed situations. The separate control box provides high variability due to selectable analog outputs and several digital interfaces. The CTfast LT sensors offer unique advantages for installation in applications with high surrounding temperatures, with the robust and ambitious design allowing the operation of the sensing heads for temperatures up to 120 °C without additional cooling.
The Optris CTfast LT series sets the industrial standard for non-contact temperature measurement, emphasizing precision and speed. Featuring a two-piece design, this pyrometer incorporates one of the smallest infrared sensors globally, with an optical resolution of up to 25:1, optimized for efficient monitoring of fast-paced manufacturing processes across industries. With a wide temperature range from -50 °C to 975 °C, suitable for non-reflecting objects, the CTfast LT series ensures versatility in temperature measurement applications.
The exceptional temperature resistance of the Optris CTfast LT series pyrometer is notable in its capabilities, allowing seamless operation in ambient temperatures up to 120 °C without supplementary cooling, positioning the infrared sensor as an optimal solution for high-temperature environments. Its distinctive thermal shock-resistant design ensures repeatability with ambient temperature changes. Engineered and manufactured in Germany to meet high-quality requirements, such thermal sensors thrive in challenging conditions. The fixed-mounted design ensures stability and accuracy over extended periods, making this infrared temperature sensor an essential tool for critical industrial processes.
A key attribute of the Optris CTfast LT series is its precise non-contact temperature measurement facilitated by separate electronics. The interface includes easily accessible programming keys and an LCD. The stainless steel housing enhances durability and is suitable for varied industrial settings. The CTfast LT series emphasizes its adaptability, with the electronics box providing a range of analog and digital outputs, ensuring seamless integration into machinery and enhancing utility across various applications. Optional accessories, such as mounting forks, sighting tubes, close-focus lenses, air purge accessories, and cooling jackets, further enhance the functionality of the infrared sensor, offering tailored solutions for varied industrial scenarios. In summary, the Optris CTfast LT series pyrometer combines precision, adaptability, and durability to facilitate non-contact temperature measurements in diverse industrial applications.
| MODEL | CTfast LT15 | CTfast LT25 |
| DETECTOR | ||
| Detector | Thermopile | |
| Measurement Principle | Single Color | |
| Spectral Range | 8 – 14 µm | |
| Response Time (90% energy) | 9 ms | 6 ms |
| Exposure Time | 9 ms | 6 ms |
| Sampling Frequency | 110 Hz | 160 Hz |
| Exchangable Sensing Head | No | |
| OPTICAL | ||
| Distance to Spot ratio (D:S) | 15:1 | 25:1 |
| Spot size (SF optics) | 26.7 mm at 400 mm | 44 mm at 1100 mm |
| Other optics (FF/CF optics / add. CF lens) | SF + CF: 0.8 mm at 10 mm | SF + CF: 0.5 mm at 8 mm CF: 2 mm at 50 mm |
| Focus | fixed | |
| SIGHTING | ||
| Laser Sighting / Video Sighting | none | |
| MEASUREMENT | ||
| Object Measurement Range | -50°C ... 975°C | |
| Accuracy | ± 1% or ± 2°C | |
| Repeatability | ± 0.75 % or ± 0.75 °C | |
| Temperature Coefficient | ± 0.05 K/K oder ± 0.05 % / K | |
| Thermal Sensitivity (NETD) | 200 mK | 400 mK |
| Warm-up time | 10 min | |
| Emissivity /Transmissivity/ Reflectivity | 0.100 – 1.100 | |
| INTERFACES & SIGNAL PROCESSING | ||
| Interface | USB / RS232 / RS485 / Profibus / Ethernet / Relay | |
| Supported Protocols | USB 2.0, Optional: EtherNet/IP / Ethernet TCP / Modbus TCP / Modbus RTU / Profinet / Profibus | |
| Direct output/input | 0-20 mA / 4-20 mA / 0-5 V / 0-10 V / t/c (K/J) | |
| Capabilities | Average, Peak hold, Valley hold, Advanced peak hold with threshold and hysteresis, Triggered signal output, Triggered peak hold function | |
| GENERAL | ||
| Size (Sensing head) | Ø12mm x 35 mm, M12x1 | |
| Size (Electronics) | 122 mm x 70 mm x 27 mm | |
| Housing Material | Stainless Steel | |
| Weight | Sensing head: 40 g / Electronics: 420 g | |
| ENVIRONMENTAL & POWER | ||
| Operating Temp. (Sensing head) | -20 °C ... 120 °C | |
| Operating Temp. (Electronics) | 0 °C ... 85 °C | |
| Protection Class | IP 65, NEMA 4 (except terminal connector) | |
| Power Supply | 8-30 V DC | |

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).