Optris CT XL 3M infrared pyrometer for laser applications

Optris CT XL 3M infrared temperature sensor for laser welding applications


Optris CT XL 3MH Infrared Pyrometer

The Optris CT XL 3MH has been designed for use in applications where lasers are used. This may be for laser welding, machining or brazing. The sensor operates in the 2.3 µm part of the infrared spectrum making it ideal for high temperatures of metals. A filter is fitted to prevent damage from exposure to lasers.

Selectable optics allow you to choose the most appropriate spot size for your application with a smallest spot of 0.5mm possible. The sensor also has a very fast response time of just 1ms. It is also easy to connect our innovative USB interface which allows simple configuration and on screen measurement with the included Compact Connect Windows software.
Calibration as well as a full range of accessories are available for the Optris High Performance infrared pyrometers.


New infrared thermometer for laser material processing, laser welding and laser soldering
Special blocking filter against laser radiation of most of all diode lasers and solid state lasers (VIS to 1800 nm and 10.6 μm)
Far focus version for use with laser collimator optics
Usable up to 85°C ambient temperature without cooling
Short wave length range of 2.3 μm to reduce error of reading with measurements on materials with unknown emissivity

General Specifications

Environmental rating: IP 65 (NEMA-4)
Ambient temperature: Sensing Head: -20°C to 85°C Electronics: 0 – 85°C
Storage temperature: Sensing Head: -40°C to 85°C Electronics: -40 – 85°C
Relative humidity: 10 – 95%, non condensing
Vibration: IEC 68-2-6: 3 G, 11-200 Hz, any axis
Shock: IEC 68-2-27: 50 G, 11 ms, any axis
Weight: Sensing Head: 600g Electronics: 420g

Measurement Specifications

Temperature range (1): 100°C to 600°C (3MH) 150°C to 1000°C (3MH1) 200°C to 1500°C (3MH2) 250°C to 1800°C (3MH3) (scaleable via programming keys or software)
Spectral range: 2.3μm
Optical resolution (90 % energy): 100:1 (3MH) 300:1 (3MH1-H3)
System accuracy: ± (0.3% of reading + 2°C) (2) (at ambient temperature 23 ±5°C)
Repeatability: ± (0.1% of reading + 1°C) (at ambient temperature 23 ±5°C)
Temperature resolution (digital): 0.1K
Response time (90%) (3): 1ms (90 %)
Emissivity/Gain : 0.100 – 1.100 (adjustable via programming keys or software)
Transmissivity : 0.100 – 1.100 (adjustable via programming keys or software)
Signal processing: peak hold, valley hold, average; extended hold function with threshold and hysteresis
Software: optris Compact Connect

1) Tobject > Tsensing head + 25°C 2) ε = 1, exposure time 1 s 3) with dynamic adaptation at low signal levels

Electrical Specifications

Output/analogue: Channel 1: 0/4 – 20 mA, 0-5/10 V, thermocouple J, K
Alarm output: Open – collector (24 V / 50 mA)
Optional: relay: 2 x 60 V DC/42 V ACeff; 0.4 A; optically isolated
Output/ digital: uni-/ bidirectional, 9.6 kBaud, 0-3 V Level, USB optional
Outputs/digital (optional): USB, RS232, RS485, CAN, Profibus DP, Ethernet
Output impedances: mA max. 500ohms (with 5 – 36 V DC) mV min. 100 kohms load impedance thermocouple 20ohms
Inputs: Programmable functional inputs for external emissivity adjustment, ambient temperature compensation, trigger (reset of hold functions)
Cable length: 3m (standard), 8 m, 15 m
Current draw: max. 10 mA
Power supply: 8 – 36 V DC

Optical Specifications

Optris CT XL 3MH optical specifications


Optris CT XL 3MH dimensions

Compact Connect Software

Compact Connect Software