DL479
AC 600A TRMS HVAC/R
Clamp Meter
INSTRUCTION MANUAL
ENGLISH
CAT Ill
1000V 600A
DL479
°C°F
NCV
µA
A
True RMS
600V
CAT IV
MAX/MIN
Hz / Duty
1000V
CAT III
CAT IV 600V
CAT III 1000V
MAX
CATEGORY DEFINITIONS
Measurement
Category
II < 10 Circuits connected to mains socket
III < 50 Mains distributions parts of the building
IV > 50 Source of the mains installation in the
Short-Circuit
(typical) kA
a
outlets and similar points in the MAINS
installation
building
Location in the
building installation
WARRANTY
The DL479 is warranted to be free from defects in materials and workmanship
for a period of two years from the date of purchase. If within the warranty
period your instrument should become inoperative from such defects, the unit
will be repaired or replaced at UEi’s option. This warranty covers normal use
and does not cover damage which occurs in shipment or failure which results
from alteration, tampering, accident, misuse, abuse, neglect or improper
maintenance. Batteries and consequential damage resulting from failed
batteries are not covered by warranty.
Any implied warranties, including but not limited to implied warranties of
merchantability and fitness for a particular purpose, are limited to the express
warranty. UEi shall not be liable for loss of use of the instrument or other
incidental or consequential damages, expenses, or economic loss, or for any
claim or claims for such damage, expenses or economic loss.
A purchase receipt or other proof of original purchase date will be required
before warranty repairs will be rendered. Instruments out of warranty will be
repaired (when repairable) for a service charge.
DISPOSAL
CAUTION: This symbol indicates that equipment and its accessories
shall be subject to separate collection and correct disposal.
CLEANING
Periodically clean your meter’s case using a damp cloth. DO NOT use abrasive,
flammable liquids, cleaning solvents, or strong detergents as they may damage the
finish, impair safety, or affect the reliability of the structural components.
STORAGE
Remove the batteries when instrument is not in use for a prolonged period of time.
Do not expose to high temperatures or humidity. After a period of storage in extreme
conditions exceeding the limits mentioned in the General Specifications section, allow
the instrument to return to normal operating conditions before using it.
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Copyright © 2016 UEi. All Rights Reserved.
FEATURES
• True RMS
• 600A AC
• 750V AC/600V DC
• Resistance 60MΩ
• Capacitance 2000µF
• Temperature -31˚ to 752˚F (-35˚ to 400˚C)
• DC Microamps 2000µA
• Frequency/Duty Cycle
• Data hold
• Min/Max (25 ms fast capture)
• Manual ranging option
• Backlight
• Worklight
• Audible voltage indicator
• Low battery indicator
• Auto power off
• Test lead storage
• Overmolded grip
• Magnetic mount
• Battery compartment latches
GENERAL SPECIFICATIONS
• Operating Temperature: 32° to 104°F (0° to 40°C)
• Storage Temperature 14° to 122°F (-10° to 50°C)
• Operating Humidity: <75%
• Operating Altitude: 6,562 ft. (2000m)
• Pollution Degree: 2
• Display: 3 5/6" Digits 6,000 Count
• Backlight: Yes
• Refresh Rate: 3/sec
• Over-range: “OL” is displayed
• Dimensions: 8.75” X 3.5” X 1.75”
• Item Weight: 0.65 lb
• Calibration: Recommended Annually
• CAT Rating: CAT IV 600V / CAT III 1000V
• Certifications: cETLus 3rd Edition, CATIII 1000V, IEC 61010-1, 61010-2-032,
61010-2-033, CSA C22.2, NO. 61010-1, 61010-2-032,
61010-2-033, 6’ Drop Protection, RoHS Compliant,
CE Conformity
• Battery Type: (AAA) X 2
• Test Leads: Test lead w/Alligator Clips
• Accuracy: ± (% of reading + # of least significant digits)
IMPORTANT SAFETY WARNINGS
WARNING
Read entire Safety Notes section regarding potential hazards and proper
instructions before using this meter. In this manual the word “WARNING” is
used to indicate conditions or actions that may pose physical hazards to the
user. The word “CAUTION” is used to indicate conditions or actions that may
damage this instrument.
WARNING
To ensure safe operation and service of the tester, follow these instructions.
Failure to observe these warnings can result in severe injury or death.
WARNING
• Before each use, verify meter operation by measuring a known voltage
or current.
• Never use the meter on a circuit with voltages that exceed the category
based rating of this meter.
• Do not use this meter during electrical storms or in wet weather.
• Do not use the meter or test leads if they appear damaged.
• Ensure meter leads are fully seated and keep fingers away from the
metal probe contact when making measurements. Always grip the leads
behind the finger guards molded into the probe.
• Do not open the meter to replace batteries while the probes are
connected.
• Use caution when working with voltages above 60V DC or 25V AC RMS.
Such voltages pose shock hazards.
• To avoid false readings that can lead to electrical shock, replace
batteries if a low battery indicator appears.
• Unless measuring voltage or current, shut off and lockout power before
measuring resistance or capacitance.
• Always adhere to national and local safety codes. Use proper personal
protective equipment (PPE) to prevent shock and arc blast injury where
hazardous live conductors are exposed.
• Always turn off power to a circuit or assembly under test before cutting,
unsoldering or breaking the current path. Even small amounts of current
can be dangerous.
• Always disconnect the live test lead before disconnecting the common
test lead from the circuit.
• In the event of electrical shock, ALWAYS bring the victim to the
emergency room for evaluation, regardless of victim’s apparent recovery.
Electrical shock can cause unstable heart rhythms that may need
medical attention.
• If any of the following occur during testing, turn off the power source to
the circuit being tested: arching, flame, smoke, extreme heat, smell of
burning materials or discoloration or melting of components.
WARNING
Higher voltages and currents require greater awareness of physical safety
hazards. Before connecting the test leads, turn off power to the circuit under
test, set meter to the desired function and range, connect the test leads to
the meter first, then connect to the circuit under test. Reapply power. If an
erroneous reading is observed, disconnect power immediately and recheck all
settings and connections.
WARNING
This meter is designed for trade professionals who are familiar with the
hazards of their trade. Observe all recommended safety procedures that
include proper lock-out utilization and use of personal protective equipment
that includes safety glasses, gloves and flame resistant clothing.
SYMBOLS
AC (Alternating current) DC (Direct current)
Negative DC AC/DC Voltage
Auto-ranging Overload: Range Exceeded
Auto power off Active Low Battery
Non-Contact Voltage
Hold/Capture Value Duty Cycle
Maximum measured value
displayed
Hertz/Frequency Ohms/Resistance
Amperage
Diode Degrees Celsius
Degrees Fahrenheit Continuity
High Voltage Indication Milli (x10-3 or 0.001)
Mega (x106 or 1,000,000) Nano (x10-9 or 0.000000001)
Kilo (x103 or 1,000) Warning or Caution
Micro (x10-6 or 0.000001) Dangerous Levels
Ground
Double Insulation (Protection
to Class II)
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Minimum measured value
displayed
Voltage
Capacitance mode in
nanofarads or microfarads
Safe for disconnect from live
conductors
OVERVIEW
4mm
C
A
E
F
B
CAT Ill
1000V 600A
H
I
L
DL479
True RMS
Hz / Duty
°C°F
NCV
µA
A
MAX/MIN
CAT IV 600V
CAT III 1000V
MAX
A. Clamp: Measure inductive AC current. Opens to 1.25” (31.7mm).
B. Conductor Alignment Marks: Used to aid the visual alignment of a conductor
when measuring inductive amperage. Greatest accuracy is achieved when the
conductor inside the clamp is centered at the intersection of these marks.
C. Wire Separation Tab/NCV sensor: Used to isolate an individual wire from a
bundle for testing. NCV sensor detects live voltage.
D. Test Lead Holder: Used for hand-free use of the test probes.
E. Worklight: Lights clamp area in dark work environments.
F. Category Max Indicator: Maximum CAT Rating for Clamp/jaw.
G. Hand Guide: Used as a point of reference for the operator’s safety.
H. NCV Alert Light: Indicates voltage when in NCV mode.
I. Clamp Lever: Opens and closes current clamp jaw. The clamp uses a high-
tension spring to close the jaw. Do not allow fingers or objects to become
pinched in the base as the jaws close.
J. Hold Button
• Press to hold the reading on the display. Press again to return to live reading.
• Press and hold to turn on Worklight and Backlight. Press and hold again to
turn off.
K. Function Dial: Turns on meter and is used to select the function.
L. Select Button
• Used to choose measurement mode from a single dial selection; AC or DC
volts, Resistance, Continuity, Diode or Capacitance, ˚F or ˚C in temperature mode.
• Press and hold the button while turning the meter on to disable Apo
(auto power off).
M. Max/Min Button
• Press to enter MAX/MIN mode.
• Press repeatedly to alternate between Maximum and Minimum readings.
• Press and hold to return to live readings.
N. Range Button:
• Press repeatedly to cycle through manual ranges.
• Press and hold to return to auto ranging mode.
• AT is displayed on LCD only during auto ranging mode.
O. Apo: Auto power off after 30 minutes of use. Press and hold the SELECT button
while turning the meter on to disable Apo (auto power off).
P. Display:
• High contrast display.
Q. Category Max Indicator: Maximum CAT Rating for input jacks.
R. Input Jacks: Multifunction and Common jacks.
• Multifunction input port used for measuring: AC or DC volts, Resistance,
Continuity, Diode, Capacitacne, DC µA and temperature.
• Use CAT III test leads or higher.
S. Serial Number
T. Magnetic Mount: For hands-free work.
U. Battery Cover: Easy access for replacing batteries.
V. Battery Cover Latches: Convenient, quick opening.
W. Test lead holders: For storing test leads when not in use.
D
G
S
J
T
U
K
V
M
N
W
O
P
Q
R
Test Lead Notes
Cat IV and CAT III Measurement Locations
4mm
• Ensure the test lead shield is pressed firmly in place. Failure to use the CAT
IV shield increases arc-flash risk.
CAT II Measurement Locations
18mm
• CAT IV shields may be removed for CAT II locations. This will allow testing
on recessed conductors such as standard wall outlets. Take care not to lose
the shields.
WARNING: Test Lead category protections apply only to test leads and
should not be confused with the meter’s specific CAT rating. Observe the
maximum category protection indicated on the meter the test leads are
plugged into.
CAUTION: If the test leads need to be replaced, you must use a new one
which should meet EN 61010-031 standard, rated CATIII 1000V or better.
Battery Replacement
• When the batteries are too low for safe
operation, the Low Battery indicator will display.
• Rotate latches until Unlock symbols are aligned
with arrows. Remove battery cover.
• Replace the old batteries with 2 new (AAA)
batteries.
• Replace the battery cover.
• Rotate latches until the lock symbols are aligned
with arrows.
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17211 • 0616
DL479
NCV
°C°F
CAT IV 600V
CAT III 1000V
MAX
µA
A
CAT Ill
1000V 600A
True RMS
Hz / Duty
MAX/MIN
AC/DC Voltage: <750V AC/600V DC
CAT Ill
1000V 600A
DL479
°C°F
NCV
µA
A
True RMS
MAX/MIN
Hz / Duty
• Default =
CAT IV 600V
CAT III 1000V
MAX
WARNING
• Use CAT III rated Test leads or higher.
• Do not attempt to measure more than 750V AC/600V DC.
• Keep hands below line when measuring high current levels.
• Do not exceed 600 volts AC or DC – RMS at either the common or
multifunction input ports as measured from earth ground.
Select AC or DC Voltage.
WARNING
• High Voltage indicator will display and audible alert will sound over 600V
AC/DC and High Voltage indicator will display (without audible alert) over
30V AC/DC.
Features:
• Press x1 =
DC Volts
Range Resolution Accuracy Overload Protection
600mV 0.1mV
6V 1mV
60V 10mV
±(0.5% +4 dgts) 1000V RMS
600V 100mV
AC Volts (45Hz to 400Hz)
Range Resolution Accuracy Overload Protection
600mV 0.1mV
6V 1mV
60V 10mV
±(1.0% + 3 dgts) 1000V RMS
600V 100mV
750V 1.0V
True RMS Frequency Range: Square 50Hz to 100Hz
Sine 50Hz to 400Hz
Bandwidth: Sine = 0.5% error at 1.5kHz (max)
Square = 0.5% error at 0.1kHz (max)
Triangle = 0.5% error at 1.2kHz (max)
Resistance: <60MΩ
• Default =
• Press x1 =
M
• Press x2 =
• Press x3 =
Features:
WARNING
• Do not measure resistance on a live circuit.
Range Resolution Accuracy Overload Protection
600Ω 0.1Ω
6kΩ 1Ω
60kΩ 10Ω
600kΩ 100Ω
±(0.8% +3 dgts)
600V RMS
6MΩ 0.001MΩ
60MΩ 0.01MΩ ±(1.2% +3 dgts)
Continuity
CAT Ill
1000V 600A
DL479
°C°F
NCV
µA
A
True RMS
Hz / Duty
MAX/MIN
• Default =
• Press x1 =
• Press x2 =
CAT IV 600V
CAT III 1000V
MAX
• Press x3 =
• Buzzer sounds at less than 40Ω.
WARNING
• Do not measure resistance on a live circuit.
Features:
Open Circuit V Response Time Overload Protection
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<1.0V <50ms 600V RMS
GOOD DIODE
Reverse Bias
Displays "OL"
Forward Bias
Displays approx.
voltage drop
BAD DIODE
Diode
1000V 600A
DL479
NCV
µA
A
True RMS
MAX/MIN
Hz / Duty
CAT IV 600V
CAT III 1000V
CAT Ill
°C°F
• Default =
• Press x1 =
• Press x2 =
• Press x3 =
MAX
Open Diode
Displays "OL"
or
Both directions
'0' Both directions
• Forward voltage drop if forward biased.
• “O.L.” if reverse biased.
Features:
Range Open Circuit V Test Current Overload Protection
4.0V <3.0V DC 1.30mA 600V RMS
(Shorted)
Capacitance (MFD)
CAT Ill
1000V 600A
DL479
°C°F
NCV
µA
A
True RMS
Features:
MAX/MIN
Hz / Duty
CAT IV 600V
CAT III 1000V
MAX
• Default =
• Press x1 =
• Press x2 =
• Press x3 =
Range Resolution Accuracy Overload Protection
60nF 0.01nF
600nF 0.1nF
6.000µF 0.001µF
60.00µF 0.01µF
±(3.0% +5 dgts) 600V RMS
600.0µF 0.1µF
2000µF 1µF
AC Amps: < 600A
Single
CAT Ill
1000V 600A
DL479
°C°F
NCV
µA
A
True RMS
MAX/MIN
Hz / Duty
CAT IV 600V
CAT III 1000V
MAX
• Center wire in conductor alignment marks for best accuracy.
• Opposing currents cancel (use line-splitter when necessary).
WARNING
• Keep hands below guard when measuring high current levels.
• Do not attempt to measure more than 600A AC.
Features:
Conductor
Only
AC Amps Measurement – Jaw input
Range Resolution Accuracy Overload Protection
60A 0.01A
600A 0.1A
±(2.0% +8 dgts) 600V RMS
True RMS Frequency Range: Sine 50Hz to 400Hz
Frequency width: 60Hz to 400Hz: 5% to 95%
Frequency width: 400Hz to 4kHz: 15% to 85%
DC Low Amps: < 2000µA
CAT Ill
1000V 600A
DL479
°C°F
NCV
µA
A
True RMS
MAX/MIN
Hz / Duty
CAT IV 600V
CAT III 1000V
MAX
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WARNING
• Do not attempt to measure more than 2000µA DC
Features:
DC Low Amps – Test Lead input
Range Resolution Accuracy Overload Protection
600µA 0.1µA
2000µA 1µA
±(1.2% +3 dgts) 2000µA/600V RMS
Non-Contact Voltage
NCV Sensor
located in tip
CAT Ill
1000V 600A
DL479
°C°F
NCV
µA
A
True RMS
MAX/MIN
Hz / Duty
CAT IV 600V
CAT III 1000V
MAX
• Select NCV mode and move the tip of the clamp meter near voltage source.
Both an Audible and Visual alert will indicate voltage.
• Non-Contact Voltage Detection is used to detect power with sensor located
in the tip of the clamp head indicates positive response with both an Audible
and Visual alert.
• Do not use non-contact voltage detector to determine if there is current on
the wire. Detection operation could be affected by socket design, insulation
thickness, type or other factors.
• Voltage indicator light may also light when voltage is present on the meter’s
input jack or from an external interference such as motors, flashlights, etc.
On Voltage
Approx. 25V AC
Temperature C˚/F˚
CAT Ill
1000V 600A
DL479
°C°F
NCV
µA
A
True RMS
MAX/MIN
Hz / Duty
CAT IV 600V
CAT III 1000V
MAX
• Default =
• Press x1 =
Disconnect test lead probes from voltage source and meter.
• Press Select button to change between Fahrenheit and Celsius
Features:
Range Resolution Accuracy Overload Protection
-31° to 752°F 0.1°F ±(1.5% +3.6°F )
-35° to 400°C 0.1°C ±(1.5% +2 °C)
600V RMS
Sensor must be thermocouple type.
Stated accuracy does not account for thermocouple accuracy.
Frequency (Hz) / Duty Cycle
CAT Ill
1000V 600A
DL479
°C°F
NCV
µA
A
True RMS
MAX/MIN
Hz / Duty
CAT IV 600V
CAT III 1000V
MAX
• Default =
• Press and hold =
• Press =
• Use CAT III test leads or higher.
• Set Function dial to AC/DC Amps, select AC Amps, press and hold the
Select button for Frequency and Duty Cycle modes.
• WARNING
• Do not attempt to measure more than 750V AC/600V DC.
Features:
Frequency
Range Resolution Accuracy Overload Protection
99.99Hz 0.01Hz
±(0.1% +3 dgts) 600V RMS999.9Hz 0.1Hz
9.999kHz 0.001kHz
Duty Cycle
Range Resolution Accuracy Overload Protection
0.5% to 95%
60Hz to 400Hz
15% to 85%
0.1%
± (0.2% per kHz
+2.0% +2 dgts)
600V RMS
400Hz to 2kHz
Frequency Width: 60Hz to 400Hz: 0.5% to 95%
400Hz to 2kHz: 15% to 85%
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Sensitivity: >6Vpp RMS
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