CTi 4M

The Optris CTi 4M is a dynamic non-contact solution for temperature measurement, particularly adept at handling challenging materials in low-temperature environments. The pyrometers unique mid-wavelength spectrum makes it an excellent choice for fast and low-temperature measurements across various materials, effectively addressing the challenges faced by LT sensors.

At its core, the Optris CTi 4M comprises an InAsSb detector operating within the 2.2 – 6 μm range. This wavelength range makes the infrared sensor suitable for measuring metals, metal oxides, ceramics, or materials with unknown or changing emissivity. Designed for high-speed temperature measurements, CTi 4M covers a temperature span from 0 °C to 600 °C (32 °F to 1112 °F).

Key features of the Optris CTi 4M include a miniaturized infrared sensing head combined with an ultra-fast integration time of 110 μs and response times as short as 320 µs, enabling precise temperature measurement in high-speed applications. The pyrometers compact head design, measuring 14 mm in diameter and 28 mm in length, ensures versatility, is fitting into various spaces and is capable of operating at temperatures of up to 70 °C. Cooling with Optris accessories is advised for exceeding operating temperatures. Additionally, its distance-to-spot size ratio, supporting up to 10:1, and compact size make this infrared thermometer an ideal choice for integration into machinery and manufacturing equipment. The IR sensors rapid response time enables the monitoring of fast processes, facilitating quick measurements in industrial processes with low cycle times.

The Optris CTi 4M adopts a two-piece sensor design with a measuring head and a separate electronic box, prioritizing accuracy and versatility. The electronic box’s simplified device configuration offers various interface options, including analog and digital outputs such as 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), Profinet, Modbus TCP, Modbus RTU, Ethernet TCP/IP and EtherNet/IP. Whether utilized in laboratory, factory, or field settings, the Optris CTi 4M facilitates precise temperature measurements effortlessly.

The compact sensing head measuring 14 mm in diameter and 28 mm in length withstands ambient temperatures of up to 70 °C. Optional accessories extend the functionality of the infrared sensor, enabling seamless integration and adaptability across a wide range of industrial applications and environmental conditions. The mounting fork ensures secure and stable installation for continuous temperature monitoring, while the sighting tube enhances targeting precision and accuracy. The close-focus lens allows for detailed temperature measurements on small or distant objects, and the air purge accessory protects the temperature sensor from contaminants in harsh environments. These optional accessories broaden the versatility of the Optris CTi 4M series, providing tailored solutions for various industrial applications.

The Optris CompactPlus Connect software is a comprehensive tool for temperature measurement and analysis in industrial and research environments utilizing Optris infrared pyrometers. It provides a user-friendly interface facilitating smooth communication with Optris pyrometers.Enhancing the capabilities of Optris fixed infrared pyrometers, the CompactPlus Connect software extends beyond basic temperature measurement, offering various monitoring, analysis, and control features. These include visualizing temperature trends with temperature-time diagrams and documentation. Notably, it enables advanced data analysis, data logging, automatic process controls, parameterization of the pyrometer via configuration settings, and programming of outputs and inputs. Additionally, it offers advanced signal-processing functionalities.Overall, the Optris CompactPlus Connect software offers a robust solution for thermal measurement applications, providing versatility, efficiency, and ease of use for professionals in diverse industries. CompactPlus 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 CTi 4M, the sensing head cable can be shortened by max. 3 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 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 has to be set to 0,93. 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?

Low temperatures can cause high noise levels. To reduce this noise, the averaging time can be increased. In addition, when taking measurements, make sure that 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 exchange of sensing heads and electronics is possible inside a certain model group. Every head has a specific Head ID, which is printed on the head cable and engraved on the sensing head. This calibration code must be stored in the electronic box for correct temperature measurement and sensor functionality.

Can you connect two pyrometers to the same computer?

Yes, this is possible. For using the software CompactPlusConnect or CompactConnect (depends on which type of pyrometers you are using) you have to create different instances of the software. You can connect two pyrometers via the USB ports. It is also possible to connect the two pyrometers with a RS485 interface. You can connect the first pyrometer via the provided RS485-USB adapter to the PC.

• CTi 4M with selectable head cable length
• 1.5 m USB-C cable + USB-A adapter
• Quick start guide