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2202007000_31-M0391_00_01 115 × 165 mm
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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
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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
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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 specications.
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 specied
below. Otherwise, the device could get damaged or
the user may suer 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 qualied 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 black (negative) tipped measuring conductor.
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Specications
Screen: LCD, 1999 (3.5 digits) with automatic
polarity indication
Measuring method: dual-slope integration via an
A/D converter
Reading frequency: 2–3× per second
Operating temperature and humidity: 0°C to 40°C,
<75 %
Storage temperature and humidity: -10°C to
50°C, relative humidity <85 %
Power supply: 1× 9 V (6F22) battery
Fuses: F 250 mA/300 V, ø 5×20 mm, F 10 A/300 V,
ø 5×20 mm
Low battery: indication via a battery symbol on
the screen
Indication of exceeded range: shows „OL“ on the LCD
Measuring category: CAT III (300 V)
Enclosure: IP20
Dimensions 28 × 138 × 70 mm
Weight: 141 g (battery included)
Accuracy
The stated accuracy is for a period of one year since
calibration of the device at 18°C to 28°C and relative
humidity of up to 75 %.
Measurement accuracy is stated as: ± [(% of reading)
+ (lowest valid digits)].
DC Voltage
Range Resolution Accuracy
200 mV 100 µV ±(0.5 % + 5)
2 V 1 mV
±(0.8 % + 5)20 V 10 mV
200 V 100 mV
300 V 1 V ±(1 % + 5)
Input impedance: 1 MΩ
Maximum input voltage: 300 V DC
AC Voltage
Range Resolution Accuracy
200 V 100 mV ±(1.2 % + 10)
300 V 1 V
Frequency range: 40 Hz to 400 Hz
Maximum input voltage: 300 V AC
Note: The value is an average corresponding to the
calibrated eective sine wave.
Direct current (DC)
Range Resolution Accuracy
20 µA 0.01 µA ±(1.2 % + 5)
200 µA 0.1 µA
±(1 % + 5)2 000 µA 1 µA
20 mA 10 µA
200 mA 100 µA ±(1.2 % + 5)
10 A 10 mA ±(2 % + 5)
Overload protection:
µA and mA range: F 250 mA/300 V fuse
10 A range: F 10 A/300 V fuse
Maximum input current:
socket: max. 200 mA
10 A socket: max. 10 A
When measuring currents larger than 2 A: meas-
urement duration must be max. 10 seconds and
measurement may only be repeated again after
15 minutes!
Resistance
Range Resolution Accuracy
200 Ω 0.1 Ω
±(1.2 % + 5)
2 kΩ 1 Ω
20 kΩ 10 Ω
200 kΩ 100 Ω
2 MΩ 1 kΩ
Voltage of an open circuit: max. 1 V
Diode and Circuit Continuity Test
Range Description Note
The approximate voltage
of the diode in the
direction of the current
ow will appear on the
screen.
Voltage
without
load: 2.2 V
Built-in buzzer indicates
that resistance in the
circuit is lower than 20 Ω.
If resistance is between
20 Ω and 150 Ω the buzzer
may or may not sound.
If resistance is higher than
150 Ω, the buzzer will not
sound.
Voltage
without
load: 2.2 V
Measuring Direct Voltage
1. Connect the plug of the red measuring conduc-
tor into the socket and the black conductor
into the COM socket.
2. Turn the circular switch to function marked
. Choose a measuring range and place the
measuring tips the spot or circuit where you
wish to measure DC voltage.
If you do not know the voltage range before-
hand, set the highest possible range and gradually
decrease it as you measure.
3. Turn on the device you want to measure. The
screen will display the voltage value and polarity
relative to the red measuring tip.
If you exceed the range of 300 V, immediately
stop measuring. Otherwise, you risk damaging the
multimeter and suering injury by electric current.
Measuring Alternating Voltage
1. Connect the plug of the red measuring conduc-
tor into the socket and the black conductor
into the COM socket.
2. Turn the circular switch to function marked
. Choose a measuring range and place the
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measuring tips the spot or circuit where you
wish to measure AC voltage.
If you do not know the voltage range before-
hand, set the largest possible range and gradually
decrease it as you measure.
3. Turn on the device you want to measure. The
screen will display the voltage value and polarity
relative to the red measuring tip.
If you exceed the range of 300 V, immediately
stop measuring. Otherwise, you risk damaging the
multimeter and suering injury by electric current.
Measuring Direct Current
1. Connect the plug of the red measuring conduc-
tor into the socket and the black conductor
into the COM socket. If the measured voltage
is between 200 mA and 10 A, connect the
plug of the red measuring conductor into the
10 A socket.
2. Turn the circular switch to function marked .
3. Connect the multimeter serially to the circuit
you wish to measure and turn on the power
supply to the measured device.
4. The screen will display the measured current
and polarity relative to the red measuring tip.
Never use the device to measure current in
places where the idle voltage in an open circuit
exceeds 300 V.
Measuring current at higher idle voltage could result
in damage to the device (fuse burnout, electric
discharge) or injury by electric current!
Measuring Resistance
1. Connect the plug of the red measuring conduc-
tor into the “ socket and the black conductor
into the COM socket.
2. Turn the circular switch to function marked .
Select measuring range. Turn o the power sup-
ply to the circuit and discharge all high-voltage
capacitors before measuring resistance in the
circuit. Doing so prevents potential damaging
of the multimeter.
3. Connect the measuring tips to the device or
circuit where you wish to measure resistance.
4. The screen will show the measured resistance
value.
Note:
1. When measuring resistances higher than 1 MΩ,
it is necessary to wait a few seconds before the
measured value stabilizes.
2. If the circuit is open, the ”OL” symbol will
appear, same as when the measuring range is
exceeded. Before measuring resistance, make
sure that the measured object is disconnected
from power supply and all its capacitors are
fully discharged.
Diode Test
1. Connect the plug of the red measuring conduc-
tor into the socket and the black conductor
into the COM socket.
2. Turn the circular switch to function marked .
3. Place the red measuring tip onto the diode‘s
anode and then the black measuring tip onto
the diode‘s cathode.
4. The screen will show voltage in mV for the
direction of current ow. „OL“ will appear on
the screen if the polarity has been reversed.
Circuit Continuity Test
1. Connect the plug of the red measuring conduc-
tor into the socket and the black conductor
into the COM socket.
2. Turn the circular switch to function marked .
3. Connect the measuring tips to the tested circuit
or device. If resistance is lower than 20 Ω, you
will hear a buzzer.
Note: Before making measurements, make sure that
the measured circuit is disconnected from power
supply and all its capacitors are fully discharged.
Changing Batteries
If the display shows the symbol, the battery
needs replacing. Use a suitable screwdriver to
change the battery.
Before changing the battery, disconnect the meas-
uring tips from the measured circuit or device and
turn the switch to the OFF position.
Unscrew the rear cover.
Replace the 9 V type 6F22 battery with a new one.
Use alkaline batteries only. Do not use rechargeable
batteries.
Make sure to observe the correct polarity. After
changing the battery, replace the cover and screw
it back on.
Replacing the Fuse
If the fuse burns out, it is most likely caused by
improper handling. The multimeter uses fuses with
these parameters:
F 250 mA/300 V, ø 5×20 mm, F 10 A/300 V,
ø 5×20 mm.
The fuse is located under the battery cover. Always
replace the fuse with a fuse of the same type and
parameters. Replace the battery cover and close
it shut.
To replace the F 10 A L 300 V fuse, contact a
service centre.
Before changing a fuse, disconnect the measuring
tips from the measured circuit or device and turn
the switch to the OFF position.
This device is not intended for use by persons (in-
cluding children) whose physical, sensory or mental
disability or lack of experience and knowledge
prevents safe use, unless they are supervised or