Optris CTlaser sensor head

Optris CTLaser electronics


Optris CTlaser LT & LTF 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 LT is a general purpose high performance IR thermometer with programmable electronics and double laser aiming for accurate measurements. Selectable optics allow you to choose the most appropriate spot size for your application with a smallest spot of 0.9mm possible. Very fast response time for LTF model of just 9ms. Both sensors have a useful measurement range of -50 to +975°C. 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.


Low and high temperature measurements of smallest spots up from 0.9 mm
Double laser aiming marks real spot location and spot size at any distance
Optics 75:1 with selectable focus
CT laser F (fast) for scanning of fast moving low temperature objects with 9ms response time
Usable up to 85°C ambient temperature without cooling and automatic laser switch off at 50°C
Selectable analog outputs 0/4-20mA, 0-5/10V, thermocouple type K or J
Optional plug in digital interfaces USB, RS232, RS485, CAN or Profibus DP

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: -50 – 975°C
Spectral range: 8 – 14 μm
Optical resolution (90 % energy): 75:1 CTlaser 50:1 CTlaser F
Selectable focus (CTlaser)(1): CF1 0.9mm @ 70mm CF2 1.9mm @ 150mm CF3 2.75mm @ 200mm CF4 5.9mm @ 450mm SF 16mm @ 1260mm
System accuracy: ±1% or ±1°C2),3)(CT laser) ±1.5% or ±1.5°C2),3) (CT laser F) (at ambient temperature 23 ±5°C)
Repeatability: ±0.5 % or ±0.5°C2) (CT laser) ±1 % or ±1°C2) (CT laser F) (at ambient temperature 23 ±5°C)
Temperature resolution (NETD): 0.1°C / 0.5°C (for CTlaser F)
Response time (90%): 9ms (CT laser F) 120ms (CT laser)
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) different spotsizes for CTlaser F (D:S = 50:1) 2) whichever is greater 3) at object temperatures >0°C, =1 4)with dynamic adaption at low signal levels

Electrical Specifications


Output/analogue: Channel 1: 0/4 – 20 mA, 0 – 5/10 V, thermocouple J, K. channel 2: sensing head temperature (-40 – 85°C as 0 – 5 V or 0 – 10 V), alarm output
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 Pegel, 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

CTlaser LT optical specifications


CTlaser dimensions


CTlaser accessories

Compact Connect Software

Compact Connect Software