Clamp-On HiTester
Expanded -25 °C to 65 °C Operating temperature range
Measure the fundamental waveform component using the average rectified method
Drop proof design withstands drop from a height of 1 meter
Connect the CT6280 flexible sensor to measure up to 4199 A in thick or paired wires
Power supply
CR2032 (3 VDC) × 1, Continuous use 150 hours
Hioki 3280-20F AC Clamp Meter
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
| 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/![a]() ]
(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. |
![c]()
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/![a]() ] function:
Resistance [Ω] or Continuity test [![a]() ] is switchable |
| HOLD key |
When press HOLD key, ![h]() appears in the display and the
digital display value is maintained. Press HOLD key again to
cancel the data HOLD function. |