- Digital clamp meter measures alternating current (AC) and direct current (DC) to 1,000 amp, DC voltage to 1,000 volts (V), AC voltage to 750V, capacitance to 6.6 millifarads, resistance to 66 megaohms, frequency to 1 megahertz (MHz), and duty cycles.
- True RMS (root mean square) sensing meter provides accurate readings when measuring linear or non-linear loads, where the current or voltage has a sinusoidal or nonsinusoidal waveform.
- Clamp with a 2" (57 mm) jaw opening measures current without touching or interrupting the circuit.
- Relative zero mode stores a reading in memory to use as a zero point for subsequent readings, allowing quick comparison of multiple readings.
- Meets International Electrotechnical Commission (IEC) safety standard 61010 and is certified for category III installations up to 1,000V and category IV installations up to 600V.
The Amprobe ACD-3400 digital clamp meter is a true RMS (root mean
square) sensing, auto- or manual-ranging multimeter for measuring
current, voltage, capacitance, resistance, frequency, and duty
cycles in electrical testing and heating, ventilation, and air
conditioning (HVAC) applications. It has a clamp that measures
alternating current (AC) and direct current (DC) to 1,000 amp.
The meter comes with detachable test leads that measure DC
voltage to 1,000 volts (V), AC voltage to 750V, capacitance to
6.6 millifarads, resistance to 66 megaohms, frequency to 1
megahertz (MHz), and duty cycles up to 95%. The clamp has two
jaws that can close around a conductor up to 2" (57 mm) in
diameter to measure current or frequency without touching or
interrupting the circuit. The relative zero mode stores a reading
in memory to use as a zero point for subsequent readings,
allowing quick comparison of multiple readings. The peak + or -
function records peak positive or negative values for AC current
and AC voltage. The maximum or minimum reading mode displays the
highest or lowest reading in a session to track a sudden increase
or decrease in readings. It has a liquid crystal display (LCD)
that shows readings both in digits and on a 66-segment bar graph.
The LCD is backlit for visibility in low light. An audible
continuity sensor confirms that the circuit conducts electricity,
and a diode test detects whether a circuit’s diodes are working
properly. The hold function keeps the reading on the display,
even after the meter is disconnected. The unit automatically
turns off after 30 minutes of non-use to conserve battery life,
and a low-battery indicator signals when the meter's batteries
need to be replaced. A finger guard on the body of the meter
helps protect fingers from shock.
This true RMS (root mean square) sensing meter provides accurate
readings when measuring linear loads, such as standard induction
motors and incandescent lights, where the current or voltage has
a sinusoidal waveform, or non-linear loads, such as electronic
devices or motors, where the current or voltage has a sinusoidal
non-sinusoidal waveform. Two ranging modes (auto or manual) offer
a range of operator control when taking readings. When turned on,
the meter will be in auto-ranging mode and automatically selects
select the correct operating range for the property being
measured. It can be switched to manual-ranging mode, which
requires that the operator choose the appropriate operating
range. The meter has a 6,600-count resolution, meaning it can
display up to 6,599 units (3-3/4 digits) before the operating
range needs to be changed. It meets International
Electrotechnical Commission (IEC) safety standard 61010 and is
certified for category III installations up to 1,000V, which
covers items used with enclosed building circuit installations
(service panel parts, branch circuits, and fixed installations
that are connected directly to a building's AC power supply), and
category IV installations up to 1,000V, which covers measurements
at the source of the low-voltage supply, such as electricity
meters and overcurrent protection devices. The unit comes with a
soft vinyl carrying case.
Specifications
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Maximum alternating current (AC) input1,000 ampMaximum direct
current (DC) input1,000 ampMaximum AC voltage input750 volts
(V)Maximum DC voltage input1,000VMaximum capacitance detected6.6
millifaradsMaximum resistance detected66 megaohmsMaximum
frequency detected1 megahertz (MHz)Duty cycle measurement range5
to 95%Power supply 9V NEDA 1604, JIS 006P, or IEC 6F22 battery
(one, installed)Standards met and certificationsEuropean Normal
(EN); International Electrotechnical Commission (IEC) and EN
safety standard 61010-1; European Conformity (CE); Underwriters
Laboratories (UL); Australia N10140Weight1.23 lb./559 gMeter
dimensions11.1 x 4.3 x 2.1 inches/281 x 108 x 53 mm (H x W x D)
H is height, the vertical distance from the 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) 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. The meter's current clamp has two jaws that
fit around a conductor to take measurements. 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 voltages determine meter choice.
Safety ratings are based on the International Electrotechnical
Commission's (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.
Amprobe manufactures electrical testing equipment for commercial,
industrial, and home use. The company was founded in 1948 and is
headquartered in Everett, WA.
What’s in the Box?
* ACD-3400 TRMS clamp multimeter
* (1) Test lead set
* (1) 9V battery (installed)
* Soft vinyl carrying case
* Instructions