- Digital clamp-meter for low-current applications measures AC and DC to 100A, 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 170g (6oz.), 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.
The Hioki 3287 digital clamp-meter is a true RMS sensing, manual-
and auto-ranging multimeter for measuring current, voltage, and
resistance in electrical testing applications, particularly
low-current installations such as cogenerator and inverter
energy-saving equipment. It has a clamp that measures AC
(alternating current) and DC (direct current) to 100A (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/Hioki3287.usermanual.pdf )
specifications vary according to the range being measured. It
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 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) input100AMaximum DC (direct
current) input100AMaximum 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 battery
Weight170g/6oz.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 3287 digital clamp-meter
* Test lead set
* CR2032 battery
* Soft carrying case
* Instructions