Infrared thermometers and thermal imagers - Optris products
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optris CTlaser LT / LTF

Product Program

  • Overview
  • Technical details
  • Applications
  • Datasheets & manuals
  • Software

Infrared thermometer optris CTlaser LT / LTF

The infrared thermometer optris CTlaser LT allows for exact temperature measurement on smallest objects from 0,9 mm at a distance of 70 mm. The IR thermometer optris CTlaser LTF is due to its short configuration time of only 9 ms perfectly suited for surveillance of quick working processes.

Both models offer a robust and premium-quality stainless steel measuring head with an innovative double laser sighting for an exact measuring field marking in every distance.

Important specifications

  • Temperature range:
    -50 °C to 975 °C
  • Spectral range: 8 - 14 µm
  • Response time: 
    9 ms (CTlaser LTF) 
    120 ms (CTlaser LT)
  • Price starts from £690,- (plus VAT)

Technical Details of the optris CTlaser LT / LTF

 

Measurement Specifications

 

  • Temperature range (scalable via software):  -50°C ... 975°C
  • Spectral range: 8 - 14 µm
  • Optical resolution (90% energy): 
    75:1 CTlaser LT 
    50:1 CTlaser LTF
  • Selectable focus (CT laser)1)

    CF1 0.9mm @ 70 mm
    CF2 1.9 mm @ 150 mm
    CF3 2.75 mm @ 200 mm
    CF4 5.9 mm @ 450 mm
    SF 16 mm @ 1260 mm

  • System accuracy (at Tamb= 23 ± 5°C): 

    ±1% or ±1°C2),3)(CTlaser LT)
    ±1.5% or ±1.5°C2),3) (CTlaser LTF)

  • Repeatability (at Tamb = 23 ± 5°C):

    ±0.5 % or ±0.5°C2) (CTlaser LT)
    ±1 % or ±1°C2) (CTlaser LTF)

  • Temperature resolution (NETD): 
    0.1 K (CTlaser LT)
    0.5 K (CTlaser LTF)
  • Response time (90% signal)4)
    9 ms (CTlaser LTF)
    120 ms (CTlaser LT)
  • Emissivity / Gain (adjustable via programming keys or software): 0.100 - 1.100
  • Transmissivity / Gain (adjustable via programming keys or software): 0.100 - 1.000
  • 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)
  • Ambient temperature: 
    sensing head: -20°C ... 85°C (50°C with laser ON)
    electronics: 0°C ... 85°C
  • Storage temperature:
    sensing head: -40°C ... 85°C
    electronics: -40°C ... 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: 600 g
    electronics: 420 g

 

Electrical Specifications

 

  • Outputs / analog:
    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
  • Output / alarm: 0-30 V/50 mA (open collector)
  • Optional: relay: 2 x 60 V DC/42 V ACeff; 0.4 A; optically isolated
  • Outputs/ digital (optional): USB, RS232, RS485, CAN, Profibus DP, Ethernet
  • Output impedances:

    mA max. 500 Ω (with 5 - 36 V DC)
    mV min. 100 kΩ load impedance
    thermocouple 20 Ω

  • Inputs: programmable functional inputs for external emissivity adjustment, ambient temperature compensation, trigger (reset of hold functions)
  • Cable length: 3 m (standard), 8 m, 15 m
  • Power supply: 8-36 V DC
  • Current draw: max. 160 mA
  • Laser 635 nm: 1mW, ON/OFF via electronic box or software

 

Versions

 

Part number: temperature range / spectral range / optics / response time

  • OPTCTLLT: -50-975°C / 8 - 14 μm / 75:1 / 120 ms
  • OPTCTLLTF: -50-975°C / 8 - 14 μm / 50:1 / 9 ms

1) different spotsizes for CTlaser LTF (D:S = 50:1)
2) whichever is greater
3) at object temperatures >0°C, =1
4) with dynamic adaption at low signal levels

Areas of application for the IR thermometer optris CTlaser LT /LTF

The two-part infrared thermometer optris CTlaser LT has been designed for universal temperature measuring employments of up to 975°C. Research and development facilities relying on valid measuring data as well as machine and system producers favor the use of this device.

The high-performance laser of the pyrometer is perfectly suited for temperature measurement of non-metallic surfaces. Among others, this includes materials like plastics, varnishes, wood, or paper. The IR thermometer is employed for e.g. temperature control during welding of plastic components as well as in testing stations in the automobile industry.

The CTlaser LTF, recognizing temperature changes within only 9 ms, has been designed for especially quick measurements and thus ensures a thorough temperature surveillance of fast processes.

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.