Emos M0391 User manual

2202007000_31-M0391_00_01 115 × 165 mm
www.emos.eu
M0391 | MD-210
GB Digital Multimeter
CZ Digitální multimetr
SK Digitálny multimeter
PL Multimetr cyfrowy
HU Digitális multiméter
SI Digitalni multimeter
RS|HR|BA|ME Digitalni multimetar
DE Digitales Multimeter
UA Цифровий мультиметр
RO|MD Multimetru digital
LT Skaitmeninis multimetras
LV Digitālais multimetrs
EE Digitaalne multimeeter
BG Цифров мултиметър

2
1
300
300
300
300
300
EVERY
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35
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GB | Digital Multimeter
Before you begin using multimeter MD-210,
read this instruction manual thoroughly. It contains
particularly important passages concerning occu-
pational safety principles when using the device.
Such passages are highlighted. Reading the manual
will prevent potential injury by electric current or
damage to the device.
The multimeter was designed in accordance with the
IEC-61010 standard regarding electronic measuring
devices in the category (CAT III 300 V), for 2nd
pollution degree.
Category CAT III is designed for measuring circuits
powered by a xed output power supply, such as
relays, sockets, switchboards, power supplies,
short branching circuits and lighting systems in
large buildings.
alternating current (AC)
direct current (DC)
direct and alternating current (AC/DC)
earthing
double insulation
low battery
diode
fuse
warning
risk of injury by electric current
product complies with applicable EU standards
This symbol means: warning, risk of danger.
Read the manual in all cases where this symbol
is used!
This symbol indicates risk of injury by electric
current.
ATTENTION
Comply with the following instructions in particular:
• Make sure the device is not damaged before
you begin using the multimeter. If you find
obvious signs of damage on the body of the
device, do not make any measurements! Check
that the surface of the multimeter does not
have scratches and that the side joints are not
coming apart.
• Do not measure voltage higher than 300 V, or
current higher than 10 A!
• The COM terminal must always be connected
to reference ground.
• Also check the measuring tips. Insulation on the
measuring probes should have no visible signs
of damage. Damaged insulation may result in
injury by electric current. Therefore, do not use
damaged measuring probes.
• If you nd that the multimeter is making ab-
normal measurements, stop using it. These
may be caused by a disrupted fuse. If you are

3
unsure of the cause of the defect, contact a
service centre.
• Do not use or store the multimeter in environ-
ments with high temperature, dust or humidity.
It is also not recommended to use the device in
environments with potentially strong magnetic
elds or risk of explosion or re.
• Do not measure voltages and currents higher
than indicated on the front panel of the multim-
eter. Risk of injury by electric current or damage
to the multimeter!
• Check that the multimeter is working properly
before use. Test on a circuit with known elec-
trical values.
• Before you connect the multimeter to a circuit
you intend to measure, turn o the power to
the circuit.
• If you need to replace a component of the
multimeter (e.g. battery, fuse), always use
spare parts of the same type and specications.
Change parts only when the multimeter is
disconnected and turned o.
• Do not alter or otherwise interfere with the
internal circuitry of the multimeter!
• Be extra careful when measuring voltages
higher than 30 V AC rms, 42 V peak or 60 V DC.
Risk of injury by electric current!
• When using measuring tips, make sure you are
holding them behind the nger barriers.
• Disconnect the measuring tips from the test-
ed circuit before opening the casing of the
multimeter.
• Do not perform measurements if the multime-
ter‘s casing is removed or loose.
• Change the battery once the low battery
warning indicator appears on the screen.
Otherwise, subsequent measurements may be
inaccurate. Incorrect measurements may then
result in injuries by electric current!
ATTENTION
Use multimeter MD-210 only in the manner specied
below. Otherwise, the device could get damaged or
the user may suer injury. Comply with the following
instructions:
Before measuring resistance, diodes or current,
disconnect the circuits from the power supply and
discharge the high-voltage capacitors.
Before measuring, make sure the circular switch for
measuring range is in the correct position. Under no
circumstances should you make any changes to the
measuring range (by moving the circular switch for
measuring programs) while measuring. Doing so
could damage the device.
If you intend to measure current, check the mul-
timeter‘s fuse and turn o the power supply to the
circuit before you connect the multimeter.
When you are measuring, rst connect the black
conductor (probe) and then the red conductor
(probe). When disconnecting the testing conductors,
disconnect the red one rst.
Maintenance Instructions
Attention
Do not attempt to repair or modify the multimeter in
any way if you are not qualied for the task or do not
have access to the necessary calibration equipment.
To prevent injury by electric current, make sure that
water does not enter the inside of the multimeter!
• Disconnect the measuring tips from the test-
ed circuit before opening the casing of the
multimeter.
• Regularly clean the body of the multimeter with
a moist cloth and a mild detergent. Perform
cleaning only when the multimeter is discon-
nected and turned o.
• Do not use solvents or abrasive agents for
cleaning!
• If you are not using the multimeter for an
extended period of time, turn it o and remove
the batteries.
• Do not store the multimeter in places with high
humidity and temperature or in places with a
strong magnetic eld!
Device Description
Multimeter MD-210 is a compact device with a 3.5
digit display. It is designed for measuring direct and
alternating voltage, direct and alternating current,
resistance, temperature, test diodes and perform
audio testing of conductivity and of circuits. The
multimeter provides protection against overload
and informs the user when the battery is low. It
is ideal for use in e.g. workshops, laboratories and
households.
Front View of the Multimeter
1 – Screen – displays 3.5 digits i.e. a maximum
value of 1999
2 – Function and range switch – allows selecting
functions and the desired range as well as
turning the multimeter on or o. If you are not
using the multimeter, turn it o. The battery will
then last you longer.
3 – 10 A socket – used for connecting the plug of
the red (positive) tipped measuring conductor
to measure currents in 10 A DC current range.
4 – socket – used for connecting the plug of
the red (positive) tipped measuring conductor
to measure voltage, resistance or current to
up to 200 mA.
5 – COM socket – used for connecting the plug of
the red (positive) tipped measuring conductor.

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