UEi Test Instruments DM384 - Manual (Page 2)

Introduction
The DM384 gives you advanced troubleshooting technology for
challenging tasks. It has numerous high-end features like MIN / M AX
capture for unattended measurement monitoring, capacitance for
checking run/start capacitors, and frequency for quick verification of
g e n e rators, inverters, and control circuit operation. The large LCD display
has an electro luminescent backlight for easy viewing at a distance.
The DM384’s combination of dura b i l i ty, visibility, and functionality are
s p e c i f i cally tailored to meet the expanding needs of today’s HVAC/R
technicians, plant maintenance professionals, appliance technicians, and
electrician's. The DM384 is handheld, and battery powered. It is designed
and tested to IEC 1010-1 (EN 61010-1) standards, the EMC directive and
other safety standards. It is rated to measure up to 1000 volts in a CAT- II
environment and up to 600 volts AC and DC in a CAT- III environment.
Features include
• 750 volts AC and 1000 Volts DC
• 10 Amps AC and DC
• .01 µA DC resolution for flame safeguard circuit testing
• Frequency to 40 MHz
• Capacitance to 40,000 microfarad
• Resistance to 40 Megohms
• Analog bar graph
• Continuity
• Diode check function
• Autoranging
• Large backlit LCD display
• Low battery indicator
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 based 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
• Use a current clamp adapter when measuring current that may
exceed 10 amps. See the accessories in UEi’s full-line ca t a l o g
• 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.
• Voltages above 60 volts DC or 25 volts AC may constitute a
serious shock hazard
• 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 re m ove 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
c u r rent applied. If any of these erroneous re a d i n gs are observed,
disconnect power immediately and recheck all settings and connections.
International Symbols
DM384-MAN P. 1