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Digital & Vector Signal Analyzers, Signal Generators and Fast Synthesizers, Spectrum


Fluke CLKT Infrared Windows are Available in Three Sizes 50 mm (2 in), 75 mm (3 in) and 100 mm (4 in)

Each CLKT infrared window is engineered and tested to withstand electric-arcs up to 50 kA for 30 cycles.

The ClirVu® coating - exclusive to Fluke infrared windows - seals the optic prior to assembly to protect against moisture degradation making it perfect for very hot and very cold outdoor environments.

Each Fluke infrared window is delivered with an identification plate attached for unique, on-site numbering for rapid location confirmation and faster repairs.

CLKT infrared windows come complete with a security access key, installation instructions and self-adhesive drilling template.

For 5 minute or less installation and Autoground consider the CV300.


  • Contact and non-contact thermometer in one
  • Measures temperatures from -40°C to 800°C (-40°F to 1472°F) accurate to +1.0°C or +1.0% of reading (whichever is greater)
  • Features rugged, ergonomic design that stands up to tough industrial, electrical, and mechanical environments.
  • Offers a distance-to-spot ratio of 50:1
  • Works with most K-type thermocouples


  • Choose the thermal camera that gives you in-focus images in a matter of seconds. LaserSharp™ Auto Focus uses a built-in laser distance meter that calculates and displays the distance from your designated target and immediately adjusts the focus.
  • See small details in the image and discover anomalies faster with 640 x 480 resolution thermal images
  • On the thermal camera, adjust the level of infrared and visible light with patented IR-Fusion™ technology
  • Manage data, capture multiple measurements (mechanical, electrical and thermal) and organize them by piece of equipment with Fluke Connect™ software
  • Simply the best optics to transmit energy and produce high quality infrared images. Fluke thermal cameras use only 100% diamond-turned germanium lenses with specialty coatings.
  • Subject to Export Control


  • Share results with your team using ShareLive™ video call (requires ir3000 FC wireless connector [sold separately] and no-cost Fluke Connect mobile app).
  • TrendCapture graphically displays logged data session to quickly determine whether anomalies may have occurred.
  • Zoom on trend provides unprecedented ability to view and analyze TrendCapture data; zoom in up to 14 times.
  • Selectable AC filter (smoothing mode) helps display a steadier reading when the input signal is changing rapidly or noisy.
  • Low Pass filter for accurate voltage and frequency measurements at the same time on adjustable speed motor drives and other electrically noisy equipment.
  • LoZ Volts. Low impedance voltage function for eliminating ghost voltages. Also recommended when testing for absence or presence of live power.
  • Adjustable recording and auto hold thresholds, specify a percentage change in the readings that begins a new event.
  • Large 50,000 count, 1/4 VGA dot matrix display with white backlight.
  • Logging function with expanded memory for unattended monitoring of signals over time. Using on-board TrendCapture users can graphically review logged readings without needing a PC. Store up to 15,000 recorded events.
  • Save multiple logging sessions before PC download is necessary.
  • Two terminal 50 ohm range with 1 milliohm resolution, 10 mA source current. Useful for measuring and comparing differences in motor winding resistance or contact resistance.
  • On board help screens for measurement functions. Unsure about a function - go to that function and press the "i" button.
  • Real time clock for automatic time stamping of saved readings.
  • Relative mode to remove test lead resistance from low ohms or capacitance measurements.
  • True-RMS AC voltage and current for accurate measurements on non-linear signals.
  • Measure up to 10 A (20 A for 30 seconds).
  • 100 mF capacitance range.
  • Peak capture to record transients as fast as 250 μs.
  • Premium test leads and alligator clips included.
  • Amp jack plugs included.
  • Optional magnetic hanger for easy setup and viewing while freeing your hands for other tasks.
  • FlukeView forms enable you to document, store and analyze individual readings or a series of measurements, then convert them into professional-looking documents.
  • Limited lifetime warranty.


  • Ideal Digital Multimeter for “go/no-go” testing
  • Features AutoVolt automatic AC/DC voltage selection
  • Includes low input impedance to help prevent false readings due to ghost voltage
  • Presents a large white LED backlight for working in poorly lit areas
  • Measures resistance, continuity, frequency, and capacitance
  • Provides Min/Max/Average with elapsed time to record signal fluctuations