The Hioki 3288-20 digital clamp-meter is a true RMS sensing,
manual- and auto-ranging multimeter for measuring current,
voltage, and resistance in electrical testing applications. It
has a clamp that measures AC (alternating current) and DC (direct
current) to 1,000A (amperes). The clamp has two jaws that can
close around an electrical conductor up to 35mm (1.38 inches) in
diameter to measure current without touching or interrupting the
circuit. Each jaw can be opened can closed independently of the
other and is 10mm (0.39 inches) thick to fit between narrowly
spaced conductors. A set of test leads is included for measuring
AC and DC voltage to 600V, and resistance to 42MΩ (megohms). The
meter has a rotary switch to select the property to measure, and
a 4,199-count LCD. To aid documentation of readings and capture
readings in tight spaces, the data hold function keeps the most
recent reading on the display after disconnecting from the
circuit. A continuity buzzer confirms that the circuit conducts
electricity. The unit operates on a single CR2032 battery, and
turns off automatically after 10 minutes of non-use to conserve
battery life. It has a low-battery indicator that signals when
the battery needs to be replaced.
This true RMS (root mean square) sensing meter provides accurate
readings when measuring linear or non-linear loads, regardless of
the waveform. It has two ranging modes: manual, which allows the
user to select the operating range, and auto, which automatically
selects the appropriate operating range. Accuracy and resolution
( https://images-na.ssl-images-.com/images/G/01/BISS/MixMeters2013/Hioki3288_20.usermanual.pdf )
specifications vary according to the range being measured. The
meter meets EN (European Standards) safety standards 61010-1,
61010-031, and 61010-2-032, and is rated for CAT (category) III
installations to 600V for current measurement and up to 300V for
voltage measurement, which covers equipment in fixed
installations, such as switches in the fixed installation and
some industrial equipment that is permanently connected to the
fixed installation, and CAT II installations to 600V for voltage
measurement, which covers energy-consuming equipment connected to
a fixed installation, including household, office, and laboratory
appliances. It has CE (European Conformity) marking. The unit
comes with a soft carrying case.
Specifications
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Maximum AC (alternating current) input1,000AMaximum DC (direct
current) input1,000AMaximum AC voltage input600VMaximum DC
voltage input600VMaximum resistance detected42MΩInstallation
ratingCAT III, 600V for current; CAT III, 300V and CAT II, 600V
for voltageStandards metEN safety standards 61010-1, 61010-031,
and 61010-2-032; CE markingPower supply CR2032
batteryWeight150g/5.3oz.Dimensions (H x W x D)180 x 57 x
16mm/7.09 x 2.24 x 0.63 inches
H is height, the vertical distance from lowest to highest point;
W is width, the horizontal distance from left to right; D is
depth, the horizontal distance from front to back.
Clamp-meters, also called clamp-on meters, have two jaws that fit
around a conductor to measure electrical current without cutting
through wires, or touching or interrupting the electrical
circuit. Available in handheld or benchtop models, clamp-meters
diagnose problems in electrical equipment, wiring, and power
supplies. All clamp-meters test for current. Some come with test
leads and inputs for measuring voltage, capacitance, and
resistance. They display information either in analog or digital
form. Factors that influence meter choice include the electrical
properties to be measured, the anticipated range of results, and
the desired level of protection against transient voltage. Safety
ratings are based on International Electrotechnical Commission
(IEC) standards for low-voltage test equipment. IEC 61010
delineates four overvoltage installation categories. In general,
a meter with a category IV rating will provide more protection
against transient voltages than a meter with a lower category
rating.
Hioki manufactures memory recorders, automatic test equipment,
and electronic testing and measurement instruments. The company,
founded in 1935, is headquartered in Japan and has a U.S. office
in Cranbury, NJ.
What's in the Box?
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* Hioki 3288-20 digital clamp-meter
* Test lead set
* CR2032 battery
* Carrying case
* Instructions
- Digital clamp-meter measures AC and DC to 1,000A, AC and DC voltage to 600V, and resistance to 42 megohms.
- True RMS sensing meter provides accurate readings when measuring linear or non-linear loads, regardless of waveform.
- Clamp measures current without touching or interrupting the circuit, has a jaw opening of 35mm (1.38 inches), and has 10mm (0.39 inches) thick jaws that can open and close independently of one another.
- Meter is sized for portability, weighing 150g (5.3oz.), with an overall length of 180mm (7.09 inches).
- Meets EN safety standards 61010-1, 61010-031, and 61010-2-032, and is rated for CAT III installations to 600V for current measurement and to 300V for voltage measurement.