Optris CT 3M Infrared Thermometer
Starting at $595.00


CT Series

Some models in stock. View available part numbers.

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  • 122 to 3272°F temperature range
  • Optical resolution
    • 22:1 (3ML)
    • 33:1 (3MH)
    • 75:1 (3MH1 - 3MH3)
  • 2.3μm spectral range
  • 185°F maximum ambient temperature
  • 1ms response time
  • Universal analog output
  • 3m cable length
  • Requires 8 to 36VDC power supply (sold separately)
  • 100mA max current draw
  • IP65 NEMA-4 rated

What's in the Box

  • Mounting nut
  • Electronic box with LCD display
  • Programming keys
  • Manual

The Optris CT 3M infrared thermometer is designed for low temperature measurement of metals, metal processing, metal oxides, and ceramic materials. It will measure temperatures from 122 to 3272°F, and functions in ambient temperatures up to 185°F without additional cooling. The short wavelength of 2.3μm reduces the margin of error when measuring materials with unknown emissivity.

Selectable analog outputs and multiple digital interfaces offer high variability. Field selectable analog outputs options include: 0/4-20mA, 0-5 and 0-10 V, type K or J thermocouples, and alarm. The Optris CT 3M includes a programmable functional input for setting external emissivity, ambient temperature compensation, and reset of hold functions. It also features peak hold, valley hold, average, and an extended hold function with threshold and hysteresis. Optional USB, RS485, RS232 interface, 2 optically isolated relay outputs, CAN-Bus, Profibus DP, and Ethernet available with plug in options.

The Optris Compact Connect temperature analysis software is available as a free download, and is necessary to document and analyze temperature measurement data. It is compatible with all netbooks, notebooks, and PC systems via Windows XP, Windows Vista, Windows 7 and 8.


Optris Compact Connect Software
Temperature analysis software for simple and fast parameterization of compact and high performance fixed IR thermometers


Please consider these optional accessories.

Optris ACC Air Purge Collar
Available for optics ≥10:1, ≤2:1, laminar & laminar with integrated CF-lens
Optris ACCTMB Mounting Bolt
M12 x 1 thread, adjustable in one axis
Optris ACCTMG Mounting Fork
M12 x 1 thread, adjustable in two axes, compatible with CT / CS ACCTFB fixed single axis mounting bracket
Optris CT Laser Sighting Tool
For aligning CT sensing heads, hardwired to CT electronics or battery powered options, available with 1, 3 or 8m connection cable
Optris Sighting Tube
M12x1 external thread, available in 20, 40 & 88mm length
Optris ACCTRAIL Rail Mount Adapter
Mounts CT electronics on a DIN rail
Optris CT / CSmicro Massive Housing
Stabilizes measurements in applications with significant & short-term variations in ambient temperatures
Optris CT Series Digital Interface
Relay, RS485, RS232, USB, RS485/422, CAN-Bus & Profibus-DPv1 interfaces
In Stock
For CT 1M, 2M & 3M series, available with external thread M12 x 1
Optris ACCTPWHT Protective Window
For CT 1M, 2M & 3M series, same mechanical size as CF lens, available with external thread M12x1
Optris ACCTHTCERT Calibration Certificate
Calibration with 3 reference temperatures for CT models 1M, 2M, 3M, G5, P3 & P7
Optris ACCTAPMH Air Purge Collar
For massive housing, M18x1 thread
Optris ACCTFBMH Mounting Bracket
Single axis mounting massive housing bracket designed to be used with 18mm (M18) massive housing diameter
Optris ACCTRAM Right Angle Mirror
Enables measurements with 90° angle to sensor axis, for sensing heads with optical resolution ≥10:1
Optris ACCTTAM25 Thread Adapter
M12x1 to M25x1.5 thread adapter includes 2 mounting nuts
Part Number Price Available
Show Configuration
Base Price
Temperature Range & Optics
482 to 3272°F, 75:1
Close focus, 1.5mm at 110mm
$595.00 1
Show Configuration
Base Price
Temperature Range & Optics
482 to 3272°F, 75:1
Standard focus
$595.00 1
Show Configuration
Base Price
Temperature Range & Optics
122 to 752°F, 22:1 (+$150.00)
Standard focus
$745.00 1

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Other part numbers are available to order but are not currently in stock. Current availability for non-stock parts is "Usually ships in 3-5 business days". Click here to select options