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Model 721 Clamp-on Harmonic Power Meter

Supplier: OBIAT Electronics Pty Ltd

The Model 721 combines the simplicity and familiarity of digital clamp-on's with today's critical information on power quality and harmonics.

Price Guide: POA

Operation is simple and direct, with no menus, calculations or complex analyzer procedures. Select Amps or Volts on the rotary dial, connect, and measure. The push of a button gives additional information. You can troubleshoot and measure power quality with the ease of using a digital clamp-on - simply, safely, and economically.


  • Designed for traditional and nonlinear loads.
  • Simple clamp-on operation with power quality features.
  • No menus, no calculations and no analyzing.
  • Accurate True RMS readings of amperes and volts.
  • Direct reading of %THD, %DF, CF, and Peak.
  • Recording mode for Min, Max, Avg, Max Peak.
  • Works with oscilloscopes as a harmonic and current transducer.
  • Rugged Lexan construction for professional daily use.
  • Built to UL, CSA, VDE, GS and IEC 1010 safety standards.


  • True RMS voltage and current values on any circuit.
  • Identify harmonic distortion patterns and sources of voltage harmonics.
  • Identify dominant load types in circuits.
  • Identify linear and nonlinear loads.
  • Locate sources of harmonic current.
  • Derating transformers.
  • Track down overloaded or unbalanced circuits.
  • Reduce system overloads.
  • Measure output frequency of adjustable speed drive controllers.

Model 721 Datasheet PDF (200kb)

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