CT 2M

Accurate temperature measurements are not just important; they are crucial, especially in hot manufacturing processes. The Optris CT 2M pyrometer, with its short-wavelength technology, exemplifies precision. Insensitive to emissivity variation and boasting high optical resolution, this infrared temperature sensor ensures consistent and reliable performance, particularly in hot metal processing applications.

The Optris CT 2M pyrometer comes in different variants designed to accurately measure temperatures ranging from 250 °C to 2000 °C (482 °F to 3632 °F), catering to various temperature ranges: 2ML: 250 C to 800 °C (482 °F to 1472 °F), 2MH: 385 °C to 1600 °C (725 °F to 2912 °F), and 2MH1: 490 °C to 2000 °C (914 °F to 3632 °F). Equipped with an InGaAs detector with a specialized spectral range of around 1.6 µm, the infrared sensor accurately measures temperatures in hot metal applications, including steel, tungsten, iron, nickel, and semiconductors.

With a distance-to-spot size ratio of up to 75:1, the CT 2M ensures precise temperature measurements even from a distance. The pyrometers compact infrared measuring head facilitates easy installation in confined spaces, enabling cost-effective mechanical integration. Its temperature resistance of up to 125 °C (257 °F) makes the pyrometer suitable for heavy machinery integration, while its rapid response time of just 1 ms allows monitoring of fast processes.

To address potential deviations when measuring metallic targets, engineers should prioritize wavelength selection alongside calibration accuracy, optics quality, and temperature range, considering factors like emissivity changes, reflections, and misalignment.

A notable feature of the CT 2M pyrometer is its precise non-contact temperature measurement facilitated by separate electronics. The interface, including easily accessible programming keys and an LCD, enhances usability. The stainless steel housing ensures durability and suitability for various industrial settings.

Emphasizing adaptability, the Optris CT 2M series offers a range of analog and digital outputs through its electronics box, including 0/4 – 20 mA, 0 – 5 V, 0 – 10 V, thermocouple (type K or J), USB, RS485, RS232 interfaces, relay outputs (2 x optically isolated), Profibus DP, ProfiNet, and Ethernet, Ethernet/IP. This adaptability ensures seamless integration into machinery, enhancing utility across various applications and providing users with versatility.

Optional accessories further enhance the functionality of the infrared sensor to meet diverse industrial needs. The mounting fork ensures secure and stable installation for continuous temperature monitoring, while the sighting tube improves targeting precision and accuracy. The close-focus lens enables detailed temperature measurements on small or distant objects, and the air purge accessory safeguards the temperature sensor from contaminants in harsh environments. Additionally, cooling jackets optimize performance in elevated temperature conditions, ensuring consistent and accurate readings.

Engineered to withstand harsh conditions, the CT 2M pyrometer ensures accurate temperature measurements even in demanding environments. The pyrometers thermal shock-resistant design guarantees consistency despite fluctuations in ambient temperature. The robust stainless steel measuring head simplifies integration into confined spaces, making this IR sensor suitable for various applications. The pyrometers exceptional temperature resistance allows seamless operation in ambient temperatures up to 100 °C (212 °F) without supplementary cooling, positioning infrared thermometer as an optimal solution for high-temperature environments. Manufactured in Germany to meet high-quality requirements, such thermal sensors excel in challenging conditions. The fixed-mounted design ensures stability and accuracy over extended periods, making this pyrometer an essential tool for critical industrial processes.

In summary, the Optris CT 2M series pyrometer facilitates non-contact temperature measurements by combining precision, adaptability, and durability. Whether capturing quick manufacturing processes or operating in challenging conditions, the IR pyrometer is a reliable and efficient solution for diverse hot industrial metal 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?

On the model CT 2M, the sensing head cable can be shortened by max. 3 m (9.8 ft)

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 fill out the optics field of view. 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 must be 0.87. 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. Any sensing heads and electronics exchange is possible inside a certain model group. 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 CT 2M as a 2-wire sensor?

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

• CT 2M with 3 m (9.8 ft) cable
• 1x mounting nut
• CT Series Manual