Measure 1000Amp AC Mean (Average) Current Hioki gauranteed quality. Three year warranty. Slim body design, allows easy clamping even for narrow conductors.

42A to 1000A AC Current Clamp Meters with Double Opening Jaw and Slim Profie to Get into the Narrowest Spaces

Hioki clamp on meters are best-in-class measuring devices incorporating Hioki’s expertise in current sensing technology. The 3280-10 and 3280-20 are our most popular clamp on meters, featuring a thin and compact clamp core that lets you get into the tightest spots.

True RMS vs. MEAN Value

Two ways to convert alternating current to RMS are “true RMS response” and “average rectified RMS response” (averaging). Both display the same value for a sine wave, but can display very different values for distorted waveform

True RMS vs. MEAN Value

Two ways to convert alternating current to RMS are “true RMS response” and “average rectified RMS response” (averaging). Both display the same value for a sine wave, but can display very different values for distorted waveform
 

• As inverters and switching power supplies proliferate, the need for the capability to measure distorted current waveforms grows.

A true RMS clamp-on current meter is the proper tool for accurate measurements.

Names and Functions of Parts

Names and Functions of Parts

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Operation grip	The clamp sensor at the same side as the pushed grip opens.
Function switch	Switching for OFF/AC current [~A] /AC voltage [~V]/DC volt- age [ V]/Resistance, Continuity check [Ω/ ] (Power is turned on in any position other than OFF.)
Test lead plug	Connect the test lead plug to the measurement terminal of the instrument for voltage measurement, resistance measurement or continuity testing.
SAMP. F/S key	n For any function of [~A],[~V],[ V]: Display update rate (FAST or SLOW) is switchable If an indicated value fluctuates rapidly and is difficult to read, a slower display update rate is available to make it easier to read the indicated value. (SLOW: about once every three seconds, unit on the LCD panel flashes at the same time.) n For [Ω/ ] function: Resistance [Ω] or Continuity test [ ] is switchable
HOLD key	When press HOLD key,  appears in the display and the digital display value is maintained. Press HOLD key again to cancel the data HOLD function.