- Bench-top digital multimeter measures voltage, current, frequency, period, and continuity, and performs diode tests.
- True RMS meter provides accurate readings when measuring linear or nonlinear loads where the current or voltage has a sinusoidal or nonsinusoidal waveform.
- Dual LCD shows two readings at once and has 50,000 count display resolution.
- USB and RS-232 computer interface for downloading data to a computer.
- Meets IEC safety standard 61010 and is certified for Category I installations up to 1000V and Category II installations up to 300V.
The B&K Precision 5491B benchtop digital multimeter (also known
as a multitester) is a true RMS, auto-ranging meter for measuring
current, voltage, resistance, and frequency in electrical testing
and manufacturing applications and for teaching electrical
engineering principles. The meter takes up to 25 readings per
second. An audible continuity sensor confirms a circuit conducts
electricity, and a diode test detects proper functioning of a
circuit's diodes. The meter also measures period. The user can
set high and low limits for pass/fail testing. The meter displays
the present measurement or the highest or lowest reading in a
session, for tracking sudden changes in readings. The meter can
also express AC and DC voltage in decibels (dB), the power ratio
of decibels to milliwatts (dBm), and percent of the reading
relative to a preset reference value. The relative mode stores a
reading in memory to use as a zero point for subsequent readings
so that multiple readings can be compared. The dual LCD displays
two readings at once, such as voltage and resistance. A hold
function keeps a reading on the display, even after the meter has
been disconnected. The user has a choice of slow, medium, or fast
measurement rate; the faster the rate, the less precise the
measurement. The USB and RS-232 interfaces connect the meter to a
computer for data transfer and remote operation (cables not
included), and is compatible with the SCPI programming language.
The meter includes a set of detachable test leads, a spare fuse,
a calibration certificate with test report, a 110/220V power
cord, and instructions.
This true RMS (root mean square) meter provides accurate readings
when measuring linear loads, such as standard induction motors
and incandescent lights, where the current or voltage has an
undistorted waveform, or nonlinear loads, such as electronic
devices or motors, where the current or voltage has a distorted
waveform. When turned on, the meter is in auto-ranging mode and
automatically selects the correct operating range for the
property being measured. It can be switched to manual-ranging
mode, which allows the operator to choose the appropriate
operating range. The LCD has a 50,000-count resolution, meaning
it can display up to 49,999 units (4-3/4 digits) before the
operating range needs to be changed. It meets International
Electrotechnical Commission (IEC) safety standard 61010 and is
certified for Category I installations up to 1000V (which covers
protected electrical equipment such as small household
appliances) and Category II installations up to 300V (which
covers large household appliances and devices connected to a
fixed power supply, such as refrigerators and air conditioners).
Specifications
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Maximum alternating current (AC) input20 ampMaximum direct
current (DC) input20 ampMaximum AC voltage input750VMaximum DC
voltage input1000VMaximum resistance detected50 megaohmsFrequency
range10Hz to 1MHzOther testsDiode and logicPower supply9V battery
(one, installed)Safety ratingsInternational Electrotechnical
Commission (IEC) safety standard 61010:2001, European Union EMC
(EN) EN61326-1:2006, EN61326-2-1:2006; Category I installations
up to 1000V and Category II installations up to
300VWeight5.51lb./2.5kgDimensions3.93 x 8.85 x 13.97 inches/100 x
225 x 355mm (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.
Multimeters are electrical test meters that measure multiple
properties of an electrical circuit, such as current, voltage,
resistance, capacitance, and continuity. Available in handheld or
benchtop models, multimeters diagnose electrical problems in
electrical equipment, wiring, and power supplies. A variety of
probes, clamps, and leads can be used to connect the meter to a
circuit or device. Multimeters 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.
B&K Precision manufactures test and measurement instruments for
research and development, production-line testing, and electronic
field service applications. The company, founded in 1951, is
headquartered in Yorba Linda, CA. It meets International
Organization for Standardization (ISO) standard 9001:2008 and is
compliant with Restriction of Hazardous Substances (RoHS) and
waste electronic and electrical equipment (WEEE) directives.
What's in the Box?
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* B&K 5491B bench-top digital multimeter
* Set of test leads
* Spare fuse
* Calibration certificate and test report
* 110/220V power cord
* Instructions