Optris CTlaser sensor head

Optris CTLaser electronics


Optris CTlaser 3M Infrared Pyrometers

The Optris CTlaser dual laser sensors offer a greater degree of flexibility in available options. The electronics are housed in a remote enclosure with a selection of output and digital interface options. The electronic box also includes its own digital LCD display showing temperature and alarm conditions. All configuration options are set via the front panel removing the need to use a PC to configure the pyrometer. Shorter wavelength versions are also available specifically designed for use with metals, glass and plastic films.  All Optris CTlaser pyrometers come with a choice of optics to best suit your requirement.

The Optris CTlaser 3M infrared sensors are ideal for measurements in metal processing and for ceramic materials at low to high temperatures. With a measuring range of 50 to 1800°C we really do have the sensor to match you application. The short wavelength sensitivity of these sensors reduces the effects of very low emissivity and with a low starting temperature you can take measurement more accurately than ever before. Selectable optics allow you to choose the most appropriate spot size for your application with a smallest spot of 0.7mm 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.


Accurate temperature measurements of metals, secondary metal processing and ceramic materials
Double laser aiming marks real spot size and location at any distance
Optical resolution up to 300:1 with selectable focus
Temperature ranges from 50°C to 1800°C, measuring spots up from 0.7 mm and response times up from 1 ms
Industrial accessories available
Usable up to 85°C ambient temperature without cooling and automatic laser switch off at 50°C
Short measuring wave length of 2.3 μm reduces error of temperature readings on surfaces with low or unknown emissivity

General Specifications

Environmental rating: IP 65 (NEMA-4)
Ambient temperature: Sensing Head: -20°C to 85°C (50°C with laser ON) 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): 50°C to 400°C (3ML) 100°C to 600°C (3MH) 150°C to 1000°C (3MH1) 200°C to 1500°C (3MH2) 250°C to 1800°C (3MH3) (scalable via programming keys or software)
Spectral range: 2.3 μm
Optical resolution (90 % energy): 60:1 (3ML) 100:1 (3MH) 300:1 (3MH1-H3)
System accuracy: ±(0.3% of reading + 2°C) (at ambient temperature 23 ±5°C)
Repeatability: ± (0.1% of reading + 1°C) (at ambient temperature 23 ±5°C)
Temperature resolution (digital): 0.1 K
Response time (90%): 1 ms (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: 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. 160 mA
Power supply: 8 – 36 V DC
Laser 635 nm: 1mW, ON/OFF via electronic box or software

Optical Specifications

Optris CTlaser 3M optical specifications


CTlaser dimensions


CTlaser accessories

Compact Connect Software

Compact Connect Software