CT 4M

Compact Two-piece Industrial Infrared 4M Pyrometer for Low-Temperature and High-Speed Applications

The quick exposure time of only 90 μs makes the high speed IR thermometer CT 4M the perfect sensor for measuring fast processes. Due to its unique mid-wavelength sensitive and a temperature range from 0 °C to 500 °C, the pyrometer optris CT 4M, is suitable for measurements of across various materials, like metals, metal oxides, ceramics or any material with unknown or changing emissivity. The pyrometer is a great alternative for LT sensors for fast and low-temperature measurements of challenging materials at super high speed. The electronics box of the measuring device allows a flexible terminal device through selectable analog outputs as well as various optional digital interfaces.

CT 4M — Important Features:

  • Temperature range: 0 °C to 500 °C
  • Spectral range: 2.2 µm – 6.0 µm
  • Exposure time: 90 μs

The Optris CT 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 CT 4M features an InAsSb detector operating within the 2.2 – 6 μm range. This wavelength range renders the infrared sensor suitable for measuring metals, metal oxides, ceramics, or materials with unknown or changing emissivity. Designed for high-speed temperature measurement, CT 4M covers a temperature span from 0 °C to 500 °C.

Key features of the Optris CT 4M include a miniaturized infrared thermometer with an ultra-fast exposure time of 90 μs and response times as quick as 300 µs. The pyrometers compact design, with a small head measuring 14 mm in diameter and 28 mm in length, ensures versatility, fitting into various spaces and capable of operating in temperatures of up to 70 °C. Cooling with Optris accessories is advised for higher 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 CT 4M adopts a two-piece sensor design with a measuring head and a separate electronic box, prioritizing accuracy and versatility. The electronic box simplifies device configuration and 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), Profibus DP, ProfiNet, and Ethernet, Ethernet/IP. Whether utilized in laboratory, factory, or field settings, the Optris CT 4M facilitates precise temperature measurements effortlessly.

The compact sensing head, measuring 14 mm in diameter and 28 mm in length, can withstand ambient temperatures of up to 70 °C. Optional accessories further enhance the functionality of the infrared sensor, catering to diverse industrial requirements. 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. Cooling jackets optimize performance in elevated temperature conditions, ensuring consistent and accurate readings. These optional accessories broaden the versatility of the Optris CT 4M series, providing tailored solutions for various industrial applications.

DETECTOR
DetectorInAsSb
Measurement PrincipleSingle Color
Spectral Range2.2 – 6 µm
Response Time300 µs
Exposure Time90 µs
Sampling Frequency3300 Hz
Exchangable Sensing HeadNo
OPTICAL
Distance to Spot ratio (D:S)10:1
Spot size (SF optics)40 mm at 400mm
Other optics (FF/CF optics / add. CF lens)CF: 5.0 mm at 50 mm
Focusfixed
Laser Sighting / Video Sightingnone
MEASUREMENT
Object Measurement Range0 °C ... 500 °C
Accuracy±0.3 % of reading +2 °C **2)
Repeatability±0.1 % of reading +1 °C **2)
Temperature Coefficient±0,05 K/ K or ±0,03 %/ K **3)
Thermal Sensitivity (NETD)120 mK
Warm-up timenone
Emissivity /Transmissivity/ Reflectivity0.100 – 1.100
INTERFACES & SIGNAL PROCESSING
InterfaceUSB / RS232 / RS485 / Ethernet / Relay
Supported ProtocolsUSB 2.0, optional: EtherNet/IP / Ethernet TCP / Modbus TCP / Modbus RTU / Profinet
Compatible SoftwareCompactPlus Connect, IRmobile
Direct output/input0-20 mA/4-20 mA/0-5 V/0-10 V/t/c (K/J)
CapabilitiesAverage, Peak hold, Valley hold, Advanced peak hold with threshold and hysteresis, Triggered signal output, Triggered peak hold function (adjustable via software)
GENERAL
SizeSensing head: Ø12mm x 35 mm, M12x1
Electronics: 122 mm x 70 mm x 27 mm
Housing MaterialStainless Steel
Weight40 g (sensing head) / 420 g (electronics)
Operating Temperature Range0 °C ... 70 °C (sensing head & electronics)
Protection ClassIP 65, NEMA 4
Power Supply8 – 30 V DC / 5 V USB / max. 1.2 W

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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).

  • CT 4M with 3m cable
  • 1x mounting nut
  • CT Series Manual