CTfast LT

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 pyrometer’s rugged construction allows operation in ambient temperatures of up to 120 °C (248 °F) 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 (-58 °F to 1787 °F), 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 (248 °F) 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.

The Optris CompactConnect software improves the functionalities of Optris fixed infrared pyrometers, offering various monitoring, analysis, and control features beyond basic temperature measurement. It includes features like visualizing temperature trends with temperature-time diagrams and documentation. The software enables data logging, automatic process controls, parameterization of the pyrometer via configuration settings, and setting up programmable outputs and inputs. Additionally, it provides advanced signal-processing functionalities. Compact Connect The Optris IR mobile 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 cameras field of view or adjusting the configuration. The app analyzes the connected infrared cameras 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). Google Play

Can I shorten the cable between the sensor head and the electronics box?

Not changing the sensing cable length is recommended, as the cable’s impedance is part of the sensor calibration. However, in all CTfast LT models, the sensing head cable can be shortened if absolutely necessary. Shortening the cable will cause an additional measuring error of about 0,1 K/m.

What distance-to-spot size ratio is correct for the application?

The measuring object’s size and the infrared thermometers optical resolution determine the maximum distance between the sensing head and the measuring object. To prevent measuring errors, the object should completely fill out the field of view of the optics. Consequently, the spot should always be at least the same size as the object or should be smaller than that.

Which changes have to be selected if an external close-focus lens is used?

The optional CF lens allows the measurement of small objects. If the CF lens is used, the transmission has to be set to 0.78. The assigned transmission (average value) is a characteristic value that may have a certain scattering. If required, the transmission has to be determined experimentally.

How can I improve the noise amplitude of the sensor?

In the CT models, the head cable must not be moved during the measurement. Use shielded cables only. The sensor shield has to be grounded. Avoid ground loops and related signal interferences in industrial environments. It might be necessary to interrupt the ground connections inside the electronics box. To do this, switch the jumper inside the electronics box to another position. Review the manual.

How do I exchange the sensor head?

From the factory side, the sensing head has already been connected to the electronics and the calibration code has been entered. Inside a certain model group, any exchange of sensing heads and electronics is possible. Every head has a specific calibration code printed on the head cable. This calibration code must be stored in the electronic box for correct temperature measurement and sensor functionality.

Can I use the CTfast LT as a 2-wire sensor?

Please do not connect a supply voltage to the analog outputs, as this will destroy the output. The CTfast LT is not a 2-wire sensor. Please review the CSmicro series, as this is a two-wire sensor.

• CTfast LT with 1 m (3.3 ft) cable
• 1x mounting nut
• CT Series Manual