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You are here: Optris GLOBALProductsInfrared thermometersPortable ThermometersMS LT


Product Program

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

Portable thermometers optris MS LT, MSplus LT, MSpro LT

The compact portable laser thermometers optris MS LT, MSplus LT and MSpro LT offer a broad temperature range from -32° up to 420°C, 530°C respectively 760°C. They allow quick targeting of smallest objects, with the one-spot laser sight making targeting of measuring objects even easier.

The infrared thermometer optris MSplus LT is additionally equipped with an acoustic and visual high / low alarm function with changing display lighting.
The IR thermometer optris MSpro LT offers an integrated alarm function and an internal data storage of up to 20 measured values as well as a thermo-elemental probe input including a thermo couple type K with measured values shown on the MSpro display.

Important Specifications

  • Temperature range:
    -32°C to 420°C
  • Spectral range: 8 to 14 µm
  • Response time: 300 MS
  • Starting at 89 €

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Technical Details of the optris MS series


Measurement Specifications


  • Temperature range: 
    MS: -32°C to 420°C (-20°F to 788°F)
    MSplus: -32°C to 530°C (-20°F to 980°F)
    MSpro: -32°C to 760°C (-20°F to 1440°F)
  • System accuracy (at Tamb = 23 ±5°C):
    ± 1% or ± 1°C (20...420/530/760°C)
    ± 1.5°C (19.9...0°C)
    ± 2.5°C (-0.1...-20°C)
    ± 3°C (-20.1...-32°C)
  • Repeatability:
    MS: ± 0.5% or ± 0.7°C (20...420°C)
    MSplus: ± 0.5% or ± 0.7°C (20...530°C)
    MSpro: ± 0.75% or ± 0.75°C (20...760°C)

  • Optical resolution (D:S):
    MS: 20:1, 13 mm spot size (D < 140 mm)
    MSplus: 20:1, 13 mm spot size (D < 140 mm)
    MSpro: 40:1, 13 mm spot size (D < 260 mm)
  • Resolution (display):
    MS: 0.2°C (0.5°F)
    MSplus: 0.1°C (0.1°F)
    MSpro: 0.1°C (0.1°F)
  • Response time (95%): 300 ms
  • Ambient temperature: 0°C to 50°C
  • Storage temperature: -20°C to 60°C without battery
  • Spectral range: 8 to 14 µm
  • Emissivity:
    MS: fixed: 0.95
    MSplus: 0.100 – 1.100 adjustable
    MSpro: 0.100 – 1.100 adjustable
  • Configurations:
    MS: Min / Max / Hold / °C / °F
    MSplus: Min / Max / Hold / °C / °F / Offset
    MSpro: Min / Max / Hold / °C / °F / Offset
  • Alarm functions: 
    MS: none
    MSplus & MSpro: Visual LCD alarmcolors and acoustic HIGH-/LOW-alarm
  • PC Interface, software, thermocouple input:
    MS: USB interface
    USB interface, OptrisConnect report software
    MSpro: USB interface, optris Connect report software, thermocouple element type K
  • Laser: <1 mW laser class IIa, laser beam with 9 mm offset
  • Weight / dimensions: 
    MS: 150 g, 190 x 38 x 45 mm
    MSplus: 150 g, 190 x 38 x 45 mm
    MSpro: 180 g; 190 x 38 x 45 mm
  • Battery: 9 V alkaline battery
  • Battery life: 
    40 hours with laser and backlight off,
    20 hours with laser and backlight on 50%
  • Relative humidity: 10 – 95 % RH non condensing, at <30°C ambient temperature
  • Scope of Supply:
    MS: 9 V alkaline battery, operators manual
    MSplus: 9 V alkaline battery, operators manual, wrist strap, pouch, protection boot, adapter for photo tripod, USB interface cable, OptrisConnect Report software
    MSpro: 9 V alkaline battery, operators manual, wrist strap, pouch, protection boot, adapter for photo tripod, USB interface cable, OptrisConnect Report software, thermocouple insertion probe type K



Part number: temperature range / spectral range / optics / output

  • OPTMSI: -32-420 °C / 8-14 μm / 20:1
  • OPTMSPLI: -32-530 °C / 8-14 μm / 20:1
  • OPTMSPRI: -32-760 °C / 8-14 μm / 40:1

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Areas of application for the optris MS series

The thermometers optris MS LT, MSplus LT and MSpro LT can be employed portable and flexibly for non-contact temperature control and surveillance of non-metallic surfaces.

They are especially popular in air-conditioning industries, e.g. for the surveillance of heating, venting, and air conditioning systems.

In mechanical maintenance, e.g. of engines, drivetrains, valves, kilns and steam distribution systems, the laser thermometers easily and reliably detect any weak spot. In preventive electrical maintenance, moreover, fuses, contacts, or switchboards can be checked preventively.

The thermometers of the optris MS series are also popular in car service stations for diagnoses of automobiles, where they locate problems with ignition systems, air conditioning or cooling systems and help solving them immediately.

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Temperature analysis software optris Connect included

The temperature software optris Connect gives you the opportunity to analyse temperatures in real time as. Furthermore you are able to document and store your measurements.

To use our cost-free analysis software, just connet your handheld infrared thermometer through USB to your computer and access your data logger as well as real time measurements.

Product configurator