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Long Range Handheld Infrared Thermometers


Long Range Handheld Infrared Thermometers | OS534E-LR

Long Range Handheld Infrared Thermometers

  • Rugged, High-Performance Design
  • Long Range 110:1 Optical Field of View, sighting scope included
  • Temperature Range to 870°C
  • Built-In Laser Sighting-Dot/Circle Switchable
  • Adjustable Emissivity from 0.1 to 1.00
  • Indicates Current with Min, Max, Average or Differential Temperatures
  • High & Low audible and visual alarm indication
  • RS232 Output with Free Windows based Data Logging PC application
  • Data Storage and Data Logging in real time (Up to 800 data points)
  • 1 mV/ Degree Analog Output Standard
Technical Reference - View related products


With their powerful features, the portable and rugged high-performance OS534E‑LR long range infrared thermometers offer solutions for many non-contact temperature measurement applications. With a 110 to 1 optical field of view, and a wide temperature range, they are suitable to measure long range and hard to reach target temperatures. Standard features include high and low audible and visual alarms, 1 mV/ degree analog output, RS232 PC interface, temperature data storage and logging. The unit also comes with a sighting scope.

Accuracy: ±1% rdg or 2°C (3.6°F), whichever is greater
Repeatability: ±(1% rdg + 1 digit)
Resolution: 1°C or 1°F
Response Time: 100 ms
Spectral Response: 8 to 14 microns
Emissivity: 0.10 to 1.00 in 0.01 increments
Operating Temperature: 0 to 50°C (32 to 122°F)
Power: 4 AA lithium batteries (2 sets included) or optional AC adaptor
Battery Life: 14 days, lithium; 80 hours, alkaline
Tripod Mount: 1/4 to 20 UNC
Display: Backlit LCD; displays current and min or max, differential, average temperatures simultaneously
Alarm: High and low alarm standard, with audible and visual indication
RS232: 2-way communications

Wavelength (Color): 650 nm (red)
Operating Distance:
    Laser Circle: 0.6 to 4.5 m (2 to 15 ft)
    Laser Dot: 0.6 to 12 m (2 to 40 ft)
FDA Classification: Class II
European Classification: Class 2
Beam Diameter: 5 mm (0.2 in)
Operating Temperature: 0 to 50°C (32 to 122°F)

Model No.OS534E-LR
Accuracy ±1% rdg or 2°C (3.6°F)
Range,°C -23 to 870°C
Range,°F -10 to 1600°F
Emissivity Adjustable
Backlit Dual Display Standard
Distance to Spot Size Ratio 110:1
Differential Temperature Standard
Min/Max Temperature Standard
Average Temperature Standard
High Alarm Standard
Low Alarm Standard
Audible Buzzer and Indicator Standard
Ambient Target
Temp Comp.
Analog Output 1 mV/degree
RS232 Output Standard
Free Data Logging Software Standard
Distance Measurement Optional
Data Logging Standard
Data Storage Standard
Laser Sight
Trigger Lock Standard
Last Temperature Recall Standard
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Part Number/ Desc.
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Consult Sales  
-23 to 870°C (-10 to 1600°F) range, 110:1 field of view
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Availability: 1 week
Universal 9 V adaptor
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Availability: In Stock
Hard carrying case, spare
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Availability: 3 weeks
Sighting scope (spare)
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Availability: 1 week
Replacement MINI-TRIPOD expands 142 to 279mm (5.6 to 11")
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Availability: In Stock
Lightweight TRIPOD expands 305mm to 1.1m (12 to 45")
All amounts shown in EUR, GBP, or USD
Note: Each unit comes complete with large, hard carrying case OS520-SC-RCC, 4 AA size lithium batteries, software CD, mini-tripod and operator's manual.
Sighting scope is factory installed and aligned, not field installable.