Optriss LS Hand held Infrared Thermometer

Optris LaserSight LS LT with Cross Hair Laser Aiming

The Optris LS infrared thermometer supports the professional non-contact temperature measurement of objects as small as 1 mm in a temperature range between -35°C and +900°C. This thermometer can be used in many applications such as preventive maintenance, quality management, research and development and electronic design.



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  • The new performance standard of infrared thermometers with spot sizes as small as 1 mm.
  • Crosshair laser sighting marks the actual spot size at any distance.
  • Temperature range from -35° to +900°C.
  • Optical resolution 75:1.
  • USB interface and graphic software with on screen graphing function.
  • Type K Thermocouple probe input.
Ambient temperature: 0°C – 50°C
Storage temperature: -30°C – 65°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: 420g
Display: LCD flip display (horizontal and vertical
viewing directions controlled by position sensor)
Display LCD backlight: green and alarm colors (red, blue)
Bar graph display: auto scaling
Alarm functions: audible and visible HIGH/LOW alarm
Laser Class II: standard focus: patented crosshair laser
(crosshair size = IR spot size@any distance)
close focus: two point laser
(laser dot size = IR spot size@focus distance)
Temperature range: -35° to +900°C (-30°F to 1650°F)
Spectral range: 8-14μm
System accuracy: ±0.75°C or ±0.75% of reading (1)
(at ambient temperature 23 ±5°C and 20-900°C range)
Repeatability: ±0.5°C or ±0.5% of reading
Temperature resolution: 0.1°C
Response time (90%) (3): 150ms (95 %)
Optical resolution: 75:1
16 mm @ 1200 mm
switchable to focus:
1 mm @ 62 mm
Minimum spot size: 1mm
Emissivity/Gain: 0.100 – 1.100 (adjustable)
Measurement Options: MAX/MIN/HOLD/DIF/ AVG/°C/°F
Software: OptrisConnect, 20 readings per second
Temperature range
t/c probe input:
-35°C to 900°C (-30°F to 1650°F)
Accuracy t/c probe input: ±0.75°C or ±1% of reading

1) whichever is greater

Interface, data output: USB
Data memory: 100 measurement protocols with time
stamps, customisable 4 digit location
and material names
Software: OptrisConnect oscilloscope software with 20
readings per second
Power: Battery 2 x AA Alkaline or via USB
Battery life time: 5 h with laser on and 50% backlight use
10 h with laser on and w/o backlight
25 h w/o laser and backlight
Tripod mount: 1/4-20 UNC (optional)
Standard accessories: USB cable and software
t/c type K insertion probe
carrying case, padded pouch, wrist strap,