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You are here: Optris GLOBALProductsInfrared thermometersHigh Performance SeriesCSlaser LT


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Infrared thermometer optris CSlaser LT

The infrared thermometer optris CSlaser LT consists of a robust stainless steel sensor with integrated electronics, enabling easy integration into your system.

Its innovative double laser sight allows for an exact marking of measurement spots even on smallest objects. A variety of optics enables adaptation for a broad range of different applications. Additionally, the IR thermometer offers a standardized two-wire interface for a reliable transfer of measurement data and easy integration into a Siemens SPS.

Important specifications

  • Temperature range:
    -30°C to 1,000°C
  • Spectral range: 8 to 14 µm
  • Response time: 150 ms
  • Starting at 490 €

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Technical Details of the optris CSlaser LT


Measurement Specifications


  • Temperature range (scalable via software): -30°C ... 1,000°C
  • Spectral range: 8 to 14 µm
  • Optical resolution (90% energy): 50:1
  • System accuracy (at Tamb = 23 ± 5°C): ± 1% or ± 1°C1)
  • Repeatability (at Tamb = 23 ± 5°C): ± 0.5% or ± 0.5°C1)
  • Temperature resolution: 0.1 K 
  • Response time (90% signal): 150 ms
  • Emissivity / Gain (adjustable via sensor or software): 0.100 - 1.100
  • IR window correction (adjustable via software): 0.100 - 1.100
  • Signal processing (parameter adjustable via software): 
    peak hold, valley hold, average, extended hold function with threshold and hysteresis


General Specifications


  • Environmental rating: IP 65 (NEMA-4) front mountable at vacuum processes (up to 10-3 mbar)
  • Ambient temperature: -20°C ... 85°C (50°C with laser ON)
  • Storage temperature: -40°C ... 85°C
  • Relative humidity: 10 - 95%, non condensing
  • Vibration: IEC 60068-2-6 (sinus shaped), IEC 60068-2-64 (broadband noise)
  • Shock: IEC 60068-2-27 (25G and 50G)
  • Weight: 600 g


Electrical Specifications


  • Output / analog: 4-20 mA
  • Loop resistance: max. 1000 Ω2)
  • Output / alarm: 0-30 V/500 mA (open collector)
  • Output/ digital: uni / bidirectional, 9.6 kBaud, 0/3 V digital level / USB optional
  • Cable length: 3 m, 8 m, 15 m
  • Power supply: 5-30 V DC
  • Current draw: 
    45 mA at 5 V
    20 mA at 12 V
    12 mA at 24 V




Part number: temperature range / spectral range / optics

  • OPTCSLLT: -30-1000°C / 8-14 μm / 50:1

1) at object temperatures >0 °C, ε = 1
2) in dependence on supply voltage

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Areas of application for the IR thermometer optris CSlaser LT

The infrared thermometer’s double laser sight makes it possible for you to measure even more precisely. This feature makes it especially popular for employment in research departments of universities.

Other industries make use of the highly precise CSlaser pyrometers as well, e.g. for the surveillance of the temperatures of wood, paper, plastics and varnishes among others. Additionally, the stationary thermometers measure process temperatures during the welding of plastic pieces and in test stations of the automotive sector.

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Infrared software optris Compact Connect included

The temperature analysis software optris Compact Connect has been developed specifically for the extensive documentation and analysis of temperature measurement data of our stationary infrared thermometers. It is license-free and included in every pyrometer shipment.    

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