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  • Do more with the same air compressors–delay the capital expense of installing an additional compressor
  • Ensure proper air pressure to your pneumatic equipment
  • Lower energy costs
  • Reduce leak detection time
  • Improve reliability in your production line
  • Make leak detection part of your typical maintenance routine
  • Train the team in a matter of minutes
  • Validate repairs on the spot


  • Large display
  • Backlight for work in dim areas
  • Min / Max to record signal fluctuations
  • Ergonomic overmolded housing with integrated probe holders
  • Free your hands with the optional TPAK magnetic hanger
  • Auto and Manual ranging
  • Meets Measurement Category 1000 V CAT III and Category IV 600 V safety standards
The 77 IV replaces the 77. Move up to superior utility and safety today.


  • Withstands drops up to 4-meters (13 feet) with industrial strength casing and holster
  • Waterproof, dustproof IP67 case for the most extreme work sites
  • Premium TL175 TwistGuard™ test leads
  • Double the battery life of the 87V (up to 800 hours); backlit keys for dark environments


Installs and grounds in less than 5 minutes Save time with quick and easy installation with the CV Series – 5 minutes or less .
  • One technician
  • One hole with standard Greenlee® punch
  • Panel door does not need to be removed
  • Grounds instantly to metal enclosure with patent-pending AutoGround™ process
  • Maintains panel arc test ratings up to 63kA when properly installed
Work more efficiently with Fluke ClirVu® CV301 75 mm (3 in) Infrared Windows
  • NFPA 70E processes significantly reduced due to less work permit requirements
  • Faster and more comfortable inspections because full PPE is often not required
  • Reduce the risk of arc-flash and electrocution, increase the safety of your personnel and reduce the time and cost of preventive maintenance
  • CV301 is Torture Tested™ to the highest arc blast test ratings IEEE C37.20.7: 63 kA Arc tested at KEMA, UL 50/50E/50V, UL1558, IEC60529-1: IP67, IEC 60068, NEMA 4/12, CSA C22.2 NO. 14-13:2012, and CE
  • Convenience of both quick turn or security keyed access

  • 0.1% DC accuracy
  • Current measurements up to 10 A, 20 A for up to 30 seconds
  • Millisecond pulse width measurements for fuel injectors
  • Optional magnetic hanger allows meter to attach to the vehicle and free your hands for other tasks
  • Min/Max/Average recording with Min/Max Alert to capture variations automatically
  • Peak Min/Max to record transients as fast as 250 μs
  • Relative mode to remove test lead resistance from low ohms measurements
  • Auto and manual ranging for maximum flexibility
  • Autohold™ to capture stable readings with only one touch of the leads
  • Large display digits and two-level bright white backlight for increased visibility
  • Analog bargraph to track changing or unstable signals
  • Input Alert provides audible warning against wrong use of input jacks
  • Access door for fast battery changes without opening up the case
  • "Classic" design that fits your hand with new removable holster, built-in test lead and probe storage
  • 10 meg ohm input impedance won’t damage computer circuits
  • Limited lifetime warranty