In the most demanding thermal environments, where others falter, the Optris CTi LThot stands resilient. Designed to excel in extreme ambient conditions, this robust infrared pyrometer features a sensing head engineered for unparalleled temperature resistance, operating reliably without additional cooling at ambient temperatures up to 250 °C. This critical advantage makes it the definitive choice for processes where heat is a constant, unforgiving presence.
The CTi LThot masterfully tackles high-temperature applications across diverse industries. From monitoring dryers, industrial furnaces, and heat-treating ovens to ensuring precision in plastics/textiles processing and semiconductor production, it delivers steadfast performance. Encased in a compact, durable stainless steel housing, it offers non-contact temperature measurement from –50 °C to 1050 °C within the spectral range of 8 to 14 µm, ideal for many materials including plastics and organic substances. With a swift response time down to 40 ms, it captures even rapid thermal fluctuations with industrial-standard precision and speed.
Beyond its core resilience, the CTi LThot is a powerhouse of connectivity and control. It features analog and digital outputs (including 0-4-20 mA and 0-10 V), comprehensive interfaces (USB, RS485, RS232, relay , Modbus RTU, Modbus TCP, Profinet, and EtherNet/IP ), and relay outputs. Three programmable I/Os offer versatile functionality for alarms, triggering, or external parameter adjustment. Configuration is seamless via free PC software or a mobile app. Developed, produced, and calibrated in Germany with rigorous end-of-line checks, it guarantees superior quality and accuracy. Supported by a wide range of accessories, the Optris CTi LThot is the robust, reliable solution for the harshest industrial landscapes.
The Optris CTi LThot pyrometer is engineered to thrive in extreme conditions within high-temperature environments, boasting exceptional temperature resistance of the sensing head. Operating in ambient temperatures of up to 250 °C without additional cooling presents no challenges for this infrared thermometer, making the pyrometer particularly suitable for integration into machines across various applications, including dryers, furnaces, heat-treating processes, plastics and textiles processing, and semiconductor production.
The Optris CTi LThot series offers temperature measurement capabilities ranging from –50 °C to 1050 °C with a response time down to 40 ms. Selectable 10:1 or 2:1 optics and a compact sensor head size further enhance its versatility.
The separate control box of the CTi LThot provides high variability with selectable analog outputs and several digital interfaces. Its unique advantages for installation in applications with high surrounding temperatures stem from a robust and ambitious design, allowing operation of the sensing heads for temperatures up to 250 °C without additional cooling. The compact stainless steel housing, measuring 29 mm in diameter and 55 mm in length, ensures durability in harsh conditions. The infrared pyrometer minimizes thermal gradients along the sensor head, optimizing thermal shock resistance for accuracy and repeatability in rapidly changing ambient temperatures.
Manufactured in Germany to meet stringent quality requirements, these pyrometers undergo meticulous calibration to government standards such as PTB or NIST. Customization options, including different cable sizes, are available for large-quantity OEM customers. Optris offers comprehensive support, including consultation on industrial applications and after-sales assistance. Additionally, upon request, the IR thermometers can be provided in an explosion-safe design with an ATEX certificate.
The adaptability of the Optris CTi LThot series is further emphasized by the range of analog and digital outputs provided by the electronics box, including 0/4 – 20 mA, 0 – 5 V, 0 – 10 V, thermocouple (type K), USB, RS485, RS232 interface, relay outputs (2 x optically isolated), Modbus RTU, Modbus TCP, Profinet, and EtherNet/IP. This adaptability facilitates seamless integration into machinery, enhancing utility across various applications.
The Optris CTi LThot series sets an industrial standard for non-contact temperature measurement, emphasizing precision and speed. Featuring a two-piece design, an optical resolution of up to 10:1, this infrared thermometer is optimized for efficient monitoring across diverse industrial applications. Its exceptional temperature resistance, precise non-contact temperature measurement, and adaptability underscore its utility and reliability in critical industrial processes. Optional accessories, such as mounting forks, sighting tubes, close-focus lenses, air purge accessories, and cooling jackets, further enhance its functionality, offering tailored solutions for varied industrial scenarios. In summary, the Optris CTi LThot series pyrometer combines precision, adaptability, and durability to facilitate non-contact temperature measurements in diverse industrial applications.
| MODEL | CTi LT02 hot | CTi LT10 hot |
| DETECTOR | ||
| Detector | Thermopile | |
| Spectral Range | 8 – 14 µm | |
| Response Time (90% energy) | 45 ms | 40 ms |
| Sampling Frequency | 22 Hz | 25 Hz |
| OPTICAL | ||
| Distance to Spot ratio (D:S) | 2:1 | 10:1 |
| Spot size (SF optics) | 200 mm @ 400mm | 40 mm @ 400mm |
| CF optics (optional) | - | CF1: 3 mm @ 30 mm |
| Focus | fixed | |
| MEASUREMENT | ||
| Object Temperature Range | -50°C … 1050°C | |
| Accuracy | ± 1.5°C or ± 1% | |
| Repeatability | ± 0.13°C or ± 0.1% | ± 0.16°C or ± 0.1% |
| Thermal Sensitivity (NETD) | 37 mK | 45 mK |
| Emissivity / Reflectivity | 0.05 – 1.100 | |
| INTERFACES & SIGNAL PROCESSING | ||
| Interface (Built-in) | USB-C (built-in) / RS232 / RS485 / Ethernet / Relay | |
| Direct Output | 0-20 mA / 4-20 mA / 0-5 V / 0-10 V / t/c (K/J) | |
| Compatible Software | CompactPlus Connect, IRmobile | |
| GENERAL SPECIFICATIONS | ||
| Size (Sensing head) | Ø29.5mm x 55 mm, M18x1 | |
| Housing Material | Stainless Steel | |
| Operating Temp (Head) | -20°C … 250°C | |
| Operating Temp (Electronics) | 0°C … 85°C | |
| Protection Class | IP 65, NEMA 4 | |
| Power Supply | 8-30 V DC (1.2 W) | |
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).
