UEi DM383, DM410 Instruction Manual
1-800-547-5740 • Fax: (503) 643-6322
www.ueitest.com • email: info@ueitest.com
DM383/DM410
INSTRUCTION MANUAL
Introduction
The DM383 is an industrial duty digital multimeter that lets you keep
your measurements in clear view. When your control panel doesn’t
allow you to stay close to your meter, you can count on the extra large
digital display to keep you informed.
Features include
• Designed to meet or exceed IEC348 and UL1244
• 3 - 1/2 digit LCD display with 0.91” tall numera l s
• Data Hold
• Diode Test
• Rubber boot
• 600 Volt fuse protection on all current ranges
• Continuity buzzer
• Auto polarity
• 20µA range for measuring Flame Safeguard current (DM410 only)
Safety Notes
Before using this meter, read all safety information carefully. 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.
• Do not attempt to measure any voltage that exceeds the
ca t e g o ry b ased rating of this meter
• Do not attempt to use this meter if either the meter or the test
leads have been damaged. Turn it in for repair at a qualified
repair facility
• Ensure meter leads are fully seated by making a quick continuity
check of the leads prior to making voltage measurements
• Keep your fingers away from the test lead’s metal probe
contacts when making measurements. Always grip the leads behind
the finger guards molded into the probes
• Do not open the meter to replace batteries or fuses while the
probes are connected
WARNING!
Exceeding the specified limits of this meter is dangerous and can
expose the user to serious or possibly fatal injury.
• Do not try to measure any voltage that exceeds 1000 V DC or 750 V AC
• Voltages above 25 volts AC or DC may constitute a serious
shock hazard
• Turn off power, disconnect the battery, and discharge all
capacitors before using the Ω and diode functions
• Use a current clamp if measuring any current above 10 amps
• 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 a circuit
• In the event of electrical shock, ALWAYS bring the victim to
the emergency room for evaluation, regardless of the victim’s
apparent recovery - Electrical shock can cause an unstable heart
rhythm that may need medical attention
• 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 the meter to the desired
function and range; connect the test leads to the meter first, then
to the circuit under test. Reapply power
• If any of the following indications occur during testing, turn
off the power source to the circuit under test:
• Arcing
• Flame
• Smoke
• Extreme Heat
• Smell of Burning Materials
• Discoloration or Melting of Components
CAUTION!
Do not attempt to remove the meter leads from the circuit under test.
The leads, the meter, or the circuit under test may have degraded to
the point that they no longer provide protection from the voltage and
current applied. If any of these erroneous readings are observed,
disconnect power immediately and recheck all settings and connections
International Symbols
DM383/DM410-MAN P. 1
Operating Instructions
Measuring DC Volts
WARNING!
To avoid the risk of electrical shock, instrument damage and/or
equipment damage input voltage must not exceed 1000 volts DC.
Do not attempt to take any unknown voltage measurements that may
be in excess of 1000 volts DC.
1. Set function and range switch to the desired DC V range. If you do
not know the value of the voltage to be measured, always start
with the highest range and reduce the setting as required to
obtain a satisfactory reading.
2. Plug the red test lead into the “V/Ω” input jack and the black lead
into the “COM” input jack of the instrument.
3. Disconnect the test leads to the circuit to be tested.
4. Connect the test leads to the circuit to be tested.
5. Reapply power to the circuit, the measured voltage will appear on
the display of the instrument.
6. If the red test lead is connected to the negative (or lower voltage)
side of the circuit, a minus sign will appear on the display, at
the left.
7. Disconnect power to the circuit before removing the test leads
from the circuit.
Measuring AC Volts
WARNING!
To avoid the risk of electrical shock, instrument damage and/or
equipment damage input voltage must not exceed 750 volts AC.
Do not attempt to take any unknown voltage measurements that may
be in excess of 750 volts AC.
1. Set function and range switch to the desired AC V range. If you do
not know the value of the voltage to be measured, always start
with the highest range and reduce the setting as required to
obtain a satisfactory reading.
2. Plug the red test lead into the “V/Ω” input jack and the black lead
into the “COM” input jack of the instrument.
3. Disconnect the test leads to the circuit to be tested.
4. Connect the test leads to the circuit to be tested.
5. Reapply power to the circuit, the measured voltage will appear on
the display of the instrument.
6. Disconnect power to the circuit before removing the test leads
from the circuit.
C o n t r ols, Indicators and Input Jacks
1. ON/OFF Push-button: Used to turn the power to the meter on
or off.
2. Data Hold Push-button: Freezes the reading on the LCD for all
functions and ranges.
3. “A” input jack: The red test lead is plugged into this jack for
measuring current on the 10 AC or DC amp functions.
4. “mAµA” input jack: The red test lead is plugged into this jack for
measuring mA or µA on either AC or DC current functions.
5. “COM” input jack: The black test lead is plugged into this jack for
all measurements.
6. “VΩ” input jack: The red test lead is plugged into this jack for
all ACV, DCV, OHM, Continuity Buzzer and Diode test functions
and ra n g e s .
DM383/DM410-MAN P. 2
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