Gossen Metrawatt M192A User manual

Operating Instructions

METRALINE DM 41

Digital Multimeter

3-447-024-03

2/2.19

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Multimeter Operating Elements

1LCD display
2 Multifunction pushbutton (yellow)
3 Pushbutton for relative value
4 Pushbutton for automatic or manual range selection
5 Hz/% pushbutton for V AC & V DC
6 Pushbutton for Data HOLD function
7 Pushbutton for backlight function (optional)
8 Function selector switch for ON/OFF and measurement

function

9 Terminal sockets

LCD Display

1 Digital display with indication of decimal point and polarity
2 Display of selected current/voltage type
3 Display for automatic measuring range selection
4 REL, HOLD display
5 Continuity test display: buzzer indication
6 Diode measurement display
7 Low battery display
8 Display for unit of measured quantity

Standard Equipment

1Multimeter
1 Protective rubber cover
1Cable set
2 Batteries, 1.5 V, type AA, installed
1 Operating instructions

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Contents Page

1 Safety Features and Safety Precautions ....................................6

2 Initial Start-Up ............................................................................9

3 Function and Range Selection .................................................10

3.1 Measuring Function Selection ..................................................................10

3.2 Automatic Measuring Range Selection .....................................................10

3.3 Manual Measuring Range Selection .........................................................10

4 Liquid Crystal Display (LCD) .....................................................11

4.1 Digital Display .........................................................................................11

4.2 Display with Backlight (Optional) ..............................................................11

5 Buzzer ......................................................................................12

6 Measurement Value Storage „HOLD“ ......................................12

7 REL – Relative Value Measurement .........................................12

8 Voltage Measurement ..............................................................13

9 Current Measurement ..............................................................14

9.1 AC Current Measurement with (Clip-on) Current Transformer ....................15

9.1.1 Transformer Output mA/A .......................................................................15

9.1.2 Transformer Output mV/A .......................................................................16

10 Diode Testing and Continuity Measurement ............................17

10.1 Diode Testing ......................................................................................... 17

10.2 Continuity Testing ................................................................................... 18

11 Resistance Measurement ........................................................19

Capacitance Measurement ................................................................. 20

12

13 Frequency and Duty Cycle Measurement ................................22

13.1 Frequency Measurement ......................................................................... 22

13.2 Duty Cycle Measurement ........................................................................22

14 Temperature Measurement .....................................................23

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15 Technical Characteristics ....................................................... 24

16 Maintenance ............................................................................30

16.1 Battery ...................................................................................................30

16.2 Fuses .....................................................................................................32

16.3 Housing ..................................................................................................33

16.4 Returns and Environmentally Sound Disposal ............................................ 34

17 Product Support ....................................................................... 35

18 Repair and Replacement Parts Service

Calibration Center* and Rental Instrument Service .................35

19 Manufacturer‘s Warranty ......................................................... 36

20 Registration .............................................................................36

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1 Safety Features and Safety Precautions

You have selected an instrument which provides you with a
high level of safety.
The digital multimeter is manufactured in compliance with
safety regulations. In case of incorrect use or careless han­dling, the safety of both user and multimeter is not assured.

To maintain the safe and proper condition of the multimeters and to
ensure their safe operation, it is absolutely necessary to carefully and
completely read these operating instructions before using any multi­meter. These instructions must be followed in all respects.

Please observe the following safety precautions

• The multimeter must only be operated by persons who
understand the danger of shock hazards and know how to
apply safety precautions. Shock hazards exist anywhere,
where voltages of more than 30 V (TRMS) may occur.

• Do not work alone in shock hazardous environment while
carrying out measurement

• The maximum allowable voltage between any terminal
sockets (1) and earth is equal to 600 V. Voltages of greater
than 500 V may only be applied to sockets „ “ and „V“
with the selector switch in the voltage measurement posi­tion (selector switch in „V“ position).

• Take into account that unexpected voltages can occur at
devices under test (e.g. defective devices), for example,
capacitors can be dangerously charged.

• Verify that the test leads are in good condition, e.g. no
cracked insulation, no open circuits in the leads or connec­tors.

• This multimeter must not be used for measurements on
circuits with corona discharge (high voltage).

• Be particularly careful when measurements are performed in
HF electrical circuits. Dangerous composite voltages may be
present.

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• Measurements under moist ambient conditions are not
permitted.

• Do not exceed the permissible overload limits of the mea­suring ranges. Limit values can be found in the table „Mea­suring Ranges“ in chapter 15 „Technical Characteristics“.

• All current ranges are equipped with fuses. The maximum
allowable voltage for the measuring current circuit is equal
to 600 V~.

• The instrument may only be used in power installations when the
electrical circuit is protected with a 20 A fuse or circuit breaker,
and the nominal voltage of the installation does not exceed 600 V.

Meaning of the symbols on the device

Warning concerning a source of danger
(Attention, refer to the operating instructions)

Earth (ground) terminal.

Double or reinforced insulation

CAT II / III / IV Instrument for measuring category II / III or IV

EU conformity mark

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Opening of Equipment / Repair

The equipment may be opened only by authorized service per­sonnel to ensure the safe and correct operation of the equip­ment and to keep the warranty valid.

Even original spare parts may be installed only by authorized
service personnel.

In case the equipment was opened by unauthorized person­nel, no warranty regarding personal safety, measurement
accuracy, conformity with applicable safety measures or any
consequential damage is granted by the manufacturer.

Repair and Parts Replacement by Authorized Service Personnel

After opening the multimeter, live parts may be exposed.
Therefore, the multimeter must be disconnected from the mea­suring circuit prior to opening its housing for repair, replace­ment of parts or calibration. If repair or calibration cannot be
avoided unless the multimeter is open and live, this work must
be performed by a qualified person who understands the dan­gers involved.

Faults and Extraordinary Stress:

If it has been ascertained that safe operation is no longer pos­sible, take the multimeter out of service and secure it against
accidental use. Safe operation may not be possible

• if the multimeter shows obvious signs of damage,

• if the multimeter no longer functions correctly,

• after prolonged storage under adverse conditions,

• on account of severe stress during transport.

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2 Initial Start-Up

Note!

Attention!

!

Batteries

Please refer to chapter 16.1 on page 30 before initial start-up
of your instrument or after a lengthy period of storage.

Switching the Multimeter ON

Turn the function selector switch from the OFF position to the
desired measuring function.
All segments of the LCD are activated briefly.
A drawing of the LCD can be found on page 2.

Electric discharge and high-frequency interference may
cause incorrect displays and block the measuring
sequence. Reset the multimeter by switching it OFF and
ON again. If this procedure is unsuccessful, briefly dis­connect the battery from the contact terminals.

Before opening, disconnect the multimeter from the measur­ing circuit and observe chapter 16 on page 30.

Automatic Meter-OFF (MoFF)

Your multimeter switches OFF automatically after 15 minutes if
no keys or the function selector switch have been activated
during this time.

Switching the multimeter back ON

Activate the HOLD key.

Switching the multimeter OFF

Turn the function selector switch to the OFF position.

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3 Function and Range Selection

$&

3.1 Measuring Function Selection

The desired measuring function is selected with the function
selector switch (white or green print). In order to select the
function printed in green color, the yellow multifunction key
must also be pressed. If the multifunction key is pressed again,
the function printed in white half circle is reactivated.

3.2 Automatic Measuring Range Selection

These multimeters features auto-ranging for all measuring
ranges except for the ranges 400 mV
selection is functional as soon as the multimeter is switched
ON. According to the measured quantity applied, the multime­ter automatically selects the measuring range which gives the
best resolution.

3.3 Manual Measuring Range Selection

You can switch OFF auto-ranging. Select and fix the ranges
manually according to the table given on page 11.
First select the desired measuring function with the function
selector switch and, if appropriate, the multifunction key.
Briefly activate the AUTO/MAN key.

Manual mode is switched OFF if you press and hold the AUTO/
MAN key until you hear a second acoustic signal, and the dis­play switches to AUTO.
When switching back to automatic operation in the 400 mV
range, the 4 V

~ range is activated.

~ and 10 A. Automatic

~

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

AUTO

/

MAN

brief

V : 400 mV → 4V → 40 V → 400 V → 600 V →

400 mV → 4V → ...

V

/: 4 V → 40 V→ 400 V → 600 V → 400 mV → ...

brief

mA : 40 mA → 400 mA → 40 mA ...

/:40 mA → 400 mA → 40 mA ...

mA
Ω:40mΩ→400 mΩ→4kΩ→ 40 kΩ→ 400 kΩ

4mΩ→40 mΩ ...

long Return to automatic range selection AUTO 2 x

Function

Manual mode ON:

utilized measuring range is fixed

Acknowledge-

ment

Acoust.

Display

Signal

1 x

1 x

Note: For temperature (°C), frequency (Hz), duty cycle (%) and
capacitance (F) measuring range is always Auto. No manual
range selection is possible.

4 Liquid Crystal Display (LCD)

4.1 Digital Display

The main digital display shows the measured value, decimal
point and sign. The selected measuring unit and function are
displayed.
When measuring DC quantities, a minus sign appears in front
of the digits, when the positive pole of the measured quantity is
applied to the „ “ input terminal.
„OL“ is displayed if the measuring range upper limit is
exceeded.
The digital display is updated three times per second for V, A,
Ω, Cap., Freq. and duty cycle measurements.

4.2 Display with Backlight (Optional)

By pressing the key, the backlight can be switched ON or
OFF to enable the user to take measurements in poor lighting
conditions.

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5Buzzer

The following steps are acknowledged ba an acoustic signal:

• Activation or deactivation of the following functions:
AUTO/MAN, REL or HOLD, Hz / %, Backlight.

• When AC voltage > 750 V is applied, DC voltage > 1000 V,
AC/DC mA > 400.0 mA, AC/DC A > 10 A, the buzzer
sounds as an overload warning.

• Approximately 1 minute before the multimeter is switched
Auto Power OFF, the buzzer issues constantly 5 acoustic
signals as a sign of warning. Before the multimeter
switches off, the buzzer generates one long acoustic signal
to warn the user.

6 Measurement Value Storage „HOLD“

By pressing the HOLD key, the currently displayed measured
value can be „held“, and „HOLD“ is displayed at the same time
on the LCD.

The HOLD display is switched off if:

• the HOLD key is reactivated,

• the function selector switch is operated,

• the yellow multifunction key is activated for a change of
function, e.g. AC

• the REL key is activated,

• the AUTO/MAN key is activated.

→ DC,

7 REL – Relative Value Measurement

The REL key serves to measure relative values and acts in acti­vation. All functions can be used for relative value measure­ment except Hz / duty.

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8 Voltage Measurement

Note!

Attention!

!

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➭ Turn the function selector switch to V .
➭ Connect the measurement cable as shown. Terminal „ “

should be grounded and the second measurement cable
with a higher potential connected to Terminal „V“.

The 400 mV~ measuring range can only be selected
manually with the „AUTO/MAN“ key!

Ensure that the current ranges („mA“ or „A“) are deactivated
and that the measurement cables are connected with the cor­rect terminals „V“ and „ “ before connecting your multi-

meter for voltage measurement! If the limit values for
fuse tripping are exceeded due to an operating error,
both the operator and the instrument are in danger!
serve the voltage limit values printed on the multimeter!

➭ Select the respective voltage type (AC or DC) which corre-

sponds to the measuring value by briefly pressing the yel­low multifunction key. Each activation of the key causes
alternate switching between AC and DC, as well as ac­knowledgment by means of an acoustic signal.

The symbols DC and AC indicate the selected voltage type on
the LCD display. After selection of this function with the selector

switch, the voltage type DC is always activated.

Ob-

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9 Current Measurement

Attention!

!

First of all, disconnect the power supply from the mea­suring circuit and/or the load and discharge any capac­itors that might be present.

1 Select function A with the function selector switch for cur-

rents > 400 mA or function mA for currents < 400 mA.

For measuring currents of an unknown quantity, select the high­est measuring range first.

2 Select the function corresponding to the measured quan-

tity by briefly pressing the yellow multifunction key. Each
time the key is pressed, alternate switching takes place
between AC and DC, and changeover is acknowledged by
an acoustic signal. The symbols DC and AC indicate the
selected current type on the LCD.

After selection of this function with the selector switch, the cur­rent type DC is always activated.

3 Connect the measuring instrument in series to the load as

shown (without contact resistance).

Notes on Current Measurement:

• The multimeter must be used only in the power systems,
where the current circuit is protected by a fuse or a circuit
breaker of 20 A, and when the nominal voltage of the sys­tem does not exceed 600 V.

• Carefully secure the measuring circuit connections by
mechanical means so that they do not accidentally open.
The conductor cross sections and connection points
should be designed so as to avoid excessive heating.

• Current ranges up to 400 mA are protected with a
FF1.6 A / 1000 V fuse.

• In the 400 mA measuring range an intermittent acoustic
signal warns you if the measured value has exceeded the
measuring range upper limit value.

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• The 10 A current measuring range is protected by a 10 A /

Attention!

!

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600 V fuse.

• If a fuse blows, eliminate the cause of the overload before
placing the multimeter back into operation!

• Replacement of the fuses is described in chapter 16.2 on
page 32.

9.1 AC Current Measurement with (Clip-on) Current Transformer

9.1.1 Transformer Output mA/A

If current transformers are operated with an open circuit
on the secondary side, e. g. due to defective or discon­nected leads, a blown fuse in the multimeter, or a
wrong connection, dangerously high voltages may
occur at the connectors. Therefore, make sure that the
current circuit of the multimeter and secondary winding
of the transformer connected to the multimeter form an
intact circuit. Connect the transformer to the and mA
or A sockets.

Some current transformers include safety devices which pre­vent dangerous voltage increases at open electrical circuits.

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The maximum allowable operating voltage at the primary con-

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Primary conductor

ductor is equal to the nominal voltage of the current trans­former. When reading the measured value, consider the trans­formation ratio of the transformer as well as the additional dis­play error.

9.1.2 Transformer Output mV/A

Some transformers have a voltage output (referred to as mV/
A). The secondary output must therefore be connected to the
connection sockets „“ and „V“.

When reading the measured values in V, consider the transfor­mation ratio of the transformer and the fact that the display
shows current values as well as the additional display error.

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10 Diode Testing and Continuity Measurement

Attention!

!

Note!

Conducting Direction Reverse Direction

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10.1 Diode Testing

Verify that the device under test is electrially dead. Ex­ternal voltages would falsify the measurement results!

➭ Set the function selector switch to „ “.
➭ Connect the device under test as shown.

Conducting Direction and Short-Circuit

The measuring instrument displays the forward voltage in volts.
As long as the voltage drop does not exceed the maximum
display value of 1.000 V you can test several elements con­nected in series.

Reverse Direction or Interruption

The measuring instrument displays a voltage of „OL“.

Resistors and semiconductor paths in parallel to the
diode distort the measurement results!

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10.2 Continuity Testing

Attention!

!

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Verify that the device under test is electrially dead. Ex­ternal voltages would falsify the measurement results!

➭ Set the function selector switch to „ “.
➭ Press the yellow multifunction key to switch to the continu-

ity measuring range.
Display of the symbol is activated.
The instrument generates a continuous acoustic signal at a
measured resistance of 0 to approx. < 75 Ω.

➭ Connect the device under test as shown below.

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11 Resistance Measurement

Attention!

!

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Verify that the device under test is electrically dead. Ex­ternal voltages would falsify the measurement results!

➭ Set the function selector switch to „Ω“.
➭ Connect the device under test as shown below.

Zero Adjustment (Relative Mode)

In the measurement of resistance, the inherent error of the
multimeter and the resistance of leads can be eliminated by
zero adjustment.

➭ Short-circuit the leads connected with the multimeter.
➭ Press the REL key.

The instrument acknowledges zero adjustment with an acoustic
signal and values close to 00 and REL are displayed on LCD.

The resistance measured at the time the REL key is pressed
serves as a reference value. This value is then automatically
deducted from all measured values.

Deleting Zero Adjustment

➭ Short-circuit the leads connected with the multimeter and

press the REL key afterwards

or activate the function selector switch
or switch the multimeter off.

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12 Capacitance Measurement

Attention!

!

Note!

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9

Absolutely verify that the device under test is electrically
dead. External voltages would falsify the measurement
results!

• Set the function selector switch to „F“.
Connect the (discharged!) device under test to sockets „ “
and „F“ with measurement cables. Polarized capacitors must
be connected to the „ “ socket at the „–“ pole.

Resistors and semiconductor paths in parallel to the
capacitor falsify the measurement results!
To measure small value capacitors, please use short
measurement cables!
If the symbol is displayed, the measured values
are not valid.

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Zero Adjustment (Relative Mode)

For the measurement of small capacitance values in the 5 nF
and 50 nF ranges, the inherent error of the multimeter and the
capacitance of the leads can be eliminated by zero adjust
ment.

➭ Connect the leads with the multimeter without device

under test.

➭ Briefly Press the REL key.

The instrument acknowledges zero adjustment with an acous­tic signal, and a value close to „00.00“ and REL are displayed
on the LCD. The capacitance measured at the moment the key
is activated serves as a reference value. This value is then
automatically deducted from all measured values.

Deleting Zero adjustment

➭ Press REL key. Clearance is acknowledged by buzzer

sound
or
➭ activate the function selector switch
or
➭ switch the multimeter off.

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13 Frequency and Duty Cycle Measurement

Note!

Note!

Duty cycle (%) =

Pulse duration

Cycle duration

x 100

13.1 Frequency Measurement

1 Set the function selector switch to V~ (V AC) (letter white)

and press the Hz/% key, as shown on page 23.
The frequency measurement mode is activated. „Hz“ sym­bol is displayed on the LCD. The digital display is expanded
to 9999 digits. Only the auto mode, no manual range is
possible.

2 Connections are established in the same way as for volt-

age measurement.

3 The lowest measurable frequencies and the maximum

allowable voltages are specified in chapter 15 „Technical
Characteristics“.

13.2 Duty Cycle Measurement

With duty cycle measurement, we can determine the ratio of
pulse duration to cycle time of recurring square wave signals.
The duty cycle, which is the percentage pulse duration of a
signal, is displayed on the LCD as follows:

The applied frequency must remain constant during the
duty cycle measurement.

1 Set the function selector switch to V~ (letter white) and

press the Hz/% key twice as shown on page 23.
The duty cycle (%) mode is activated. The „%“ symbol is
displayed on the LCD.

The Hz/% key is only applicable for V~ (letter white).

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2 Connections are made the same way as for voltage mea-

9a

3UHVV
+]NH\

3UHVV
+]NH\

3UHVV
+]NH\

3UHVV
+]NH\

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VHQVRU

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surement.

3 Measuring range for duty cycle and maximum allowable

voltage can be found in chapter 15 „Technical Characteris-

tics“.

14 Temperature Measurement

The multimeter allows you to measure temperature with a K-type
thermocouple (NiCr-Ni) in the range of –50 °C to +1300 °C.

➭ Set the function selector switch to „°C“.
➭ Connect the sensor as shown below.

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15 Technical Characteristics

Meas.

Measuring

Func-

tion

400.0 mV 100 μV > 20 MΩ 0.75 + 2

V

400.0 mV 100 μV 11 MΩ 1.5 + 5

V

40.00 mA 10 μA 450 mV

A

400.0 mA 100 μA 4.2 V

10.00 A

40.00 mA 10 μA 450 mV

A

400.0 mA 100 μA 4.2 V

10.00 A

400.0 Ω 100 mΩ

4.000 kΩ 1 Ω

Ω

400.0 kΩ 100 Ω

4.000 MΩ 1 kΩ 1 + 5

40.00 MΩ 10 kΩ 2 + 5

400.0 Ω 100 mΩ Acoustic

Resolution Input

Range

4.000 V 1 mV 11 MΩ

40.00 V 10 mV 10 MΩ

400.0 V 100 mV 10 MΩ
600 V 1 V 10 MΩ

4.000 V 1 mV 11 MΩ

400.0 V 100 mV 10 MΩ
600 V 1 V 10 MΩ 1 + 10

1)

10 mA 750 mV 1.5 + 5 — —

1)

10 mA 750 mV 2 + 5 — —

1.000 V 1 mV approx. 1 V 2 + 10

Impedance

V (AC) / V

(DC)

approx. voltage

drop at max.

meas. current

Open-circuit volt.

approx. 0.45 V

Digital display
inherent devia­tion at refer­ence condition
+(...% rdg.
+...digits)

0.5 + 2

0.8 + 2 480 mA

0.8 + 5

0.8 + 240.00 kΩ 10 Ω

signal for

0...< 75 Ω
(approx)

Overload Capacity

Overload Val­ues

1050 V (DC)

1 + 540.00 V 10 mV 10 MΩ

1 + 5 480 mA

1050 V (AC)

rms

500 V
DC/AC

rms

Over­load
Dura­tion

Conti­nuous

Conti­nuous

Conti­nuous

Conti­nuous

10

min

3)

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Meas.
Func-

tion

Measuring

Range

Resolution Input

Impedance

V (AC) / V

5.000 nF 1 pF

50.00 nF 10 pF 2 + 10

500.0 nF 100 pF 0.5 + 3

F

5.000 μF 1 nF 1 + 2

50.00 μF 10 nF 1.5 + 2

200.0 μF 100 nF 5 + 10

(DC)

—

Digital display
inherent devia­tion at refer­ence condition
+(...% rdg.
+...digits)

3 + 40

Overload Capacity

Overload Val­ues

4)

4)

4)

4)

4)

5)

f min

10.000 Hz 0.001 Hz

100.00 Hz 0.01 Hz

1.0000 kHz 0.1 Hz

2)

Hz

10.000 kHz 1 Hz

100.00 kHz 10 Hz

500.0 kHz 100 Hz

2.0 ...

98.0%

%

0.1 %

1 Hz 0.2 + 2

10 Hz ... 1

—

kHz : ± 5D
1 kHz ... 10
kHz : ± 5D/

kHz

≤ 1kHz :

≤ 10 kHz :

≤ 500 kHz :

except 400

Sensor

°C

0 ... + 1300

°

–50 ... 0 °C1 °

1)

Limited by a 10 A fuse

2)

Indication for frequency measurement expanded to 9999 digits

3)

At 0 °C... + 40 °C

4)

With zero adjustment „REL“.

5)

Time required for measurement approximately 60 seconds.

1 °C

C

K-type
NiCr-Ni

C

2 + 3

2,0 ±10

500 V DC/AC

500 V
DC/AC

rms

1000 V

400 V

40 V

mV

rms

Over­load
Dura­tion

10
min

Conti­nuous

10
min

3)

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Reference Conditions

Ambient Temperature + 23 °C ± 2 K
Relative Humidity 45% ... 55%
Measuring Magnitude

Frequency Sine, 50 Hz
Measuring Magnitude

Waveform Sine
Battery Voltage 3 V ±0.1 V

Ambient Conditions

Working Temperature
Range –10 °C ... + 50 °C
Storage Temperature
Range –25 °C ... + 70 °C
Relative Humidity 45 ... 75%

Elevation up to 2000 m

Display

LCD display field (58 mm x 31.4 mm) with digital display and
display of unit of measure, current type and various special
functions.

Digital

Display/Char. Height 7 segment digits / 15 mm
Number of Places 3¾ place equals 3999 steps
Overflow Display „OL“
Polarity Display „–“ sign is displayed when plus pole is

Measuring Rate 3 measurements/s for V, A, Ω,

at „ “

Capacitance, Frequency and Duty cycle
measurement

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Influencing Quantities and Effects

Influencing

Vari able

Temperature

Influence

Vari able

Frequency V

AC

Influence

Vari able

Relative

Humidtiy

Influencing

Vari able

Common Mode

Interference

Volt age

Series Mode
Interference

Volt age

Range of Influence

0 °C ... +21 °C

and

+25 °C ... +50 °C

Range of Influence

(max. resolution)

4, 40, 400 V

400 mV, 600 V

Range of Influence

55 ... 75 %

Interference Quantity

1000 V DC/AC 50 Hz sine all V DC > 100 dB

1000 V AC 50 Hz sine

max. 1000 V AC 50/60 Hz sine V DC > 43 dB

Measured Quantity/

Measuring Range

V , V

mA/A , mA/A

Ω

F

Hz

Duty (%)

°C

Frequency

20 Hz ... < 50 Hz

> 50 Hz ... 1 kHz

20 Hz ... < 50 Hz

> 50 Hz ... 500 Hz

Measured Quantity/

Measuring Range

V AC / DC

mA / A AC / DC

Ω

F

Hz(%)

°C

1000 V DC all V AC > 100 dB

max. 1000 V DC V AC > 55 dB

Influence Effect

1 x intrinsic error/K

Intrinsic Error at Ref.

± (... % of rdg + ... D)

2 + 3

2 + 3

Influence Effect

1 x intrinsic error

Measuring

Range

400 mV/4 V AC > 55 dB

40 V AC > 55 dB

400 V AC > 43 dB

600 V AC > 23 dB

Auxiliary voltage influence:
(without display ) – all ranges except cap.: ±8 D
cap. range: ±20 D

Attenuation

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Power supply

Battery 2 x 1.5 V mignon cell (2x AA-Size)

alkaline-manganese cell per IEC LR6.

Service life with alkaline-manganese cell:

approx. 600 hours

Battery test Automatic display of „ “ symbol

when battery voltage falls below
approx. 2.4 V.

Fuses

Fuse for ranges
up to 400 mA FF 1.6A/1000V;

Fuse for 10 A range FF 10A/600V;

Electromagnetic compatibility (EMC)

Emission EN 61326: 2013 Class B
Immunity IEC 61000-4-2:

Short-term measured value deviation may occur during electromagnetic interfer­ence thus reducing the specified operating quality.

6.3 mm x 32 mm; protects all current
measuring ranges up to 400 mA

6.3 mm x 32 mm; protects all
measuring ranges up to 10 A

8 kV atmospheric discharge
4 kV contact discharge
IEC 61000-4-3: 3 V/m

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Electrical Safety IEC 61010-1-2010
Installation category 600 V CAT III / 300 V CAT IV
Pollution degree 2
High Voltage Test 3.5 kV

Mechanical Design

Protection for multimeter: IP50

Dimensions W x H x D:

Weight approx. 480 g with battery

~ (IEC 61010-1-2010)

for terminals: IP20

with holster:
86 mm x 188 mm x 53 mm
without holster:
79 mm x 174 mm x 38 mm

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16 Maintenance

Attention!

!

Attention!

!

+

Disconnect the multimeter from the measuring circuit
before you open it to replace the battery or the fuse!

16.1 Battery

Prior to initial start-up or after storage of multimeter, verify that
the batteries inserted in the multimeter do not leak. Repeat this
check at regular brief intervals.
If battery leakage has occurred, the electrolyte from the battery
must be carefully and completely removed and new batteries
must be installed before putting the multimeter back into oper­ation.
When the symbol appears on the LCD, replace the bat­teries as soon as possible. Although measurements can still be
performed, a reduced measuring accuracy must be taken into
account in this case.

Replacing the Battery

➭ Unscrew the battery compartment cover from the base

housing. There is no need to remove the entire base of the
housing.

Remove the batteries by le­vering out the negative pole of
the batteries with a screw
driver first. Otherwise, the
contacts of the positive pole
in the battery compartment
might be damaged and the
battery lead severed.

➭ Remove the batteries from the battery compartment.

Insert two new 1.5 V mignon cells in accordance with the
polarity symbols in the battery compartment.

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Attention!

!

When inserting the batteries, begin with the positive
pole of the battery and fit the negative pole into place
afterwards, in order to avoid damage to the contacts of
the positive pole.

➭ Tighten the battery compartment cover with the screw.
➭ Dispose of the dead batteries in an environmentally sound

fashion.

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16.2 Fuses

Attention!

!

The 10 A fuse interrupts the 10 A current range, and the 1.6 A
fuse protects the mA current measuring ranges. All other mea­suring ranges continue to function.
When a fuse blows, eliminate the cause of the overload before
putting the instrument back into operation!

Replacing the Fuses

➭ Unscrew the cover of the housing base from the top hous-

ing.

➭ Remove the defective fuse from the fuse holders, e.g. with

the help of a probe and replace it with a new one.

➭ Screw the cover of the base housing onto the top again.
➭ Make sure that the new fuse makes good contact.

The following fuses are admissible:
– for current measuring ranges up to 400 mA:

type FF 1.6 A/1000 V

– for the 10 A current measuring range:

type FF 10 A/600 V

It is imperative to ensure that only the fuses specified
above are installed!
If a fuse with different specifications is used, it may put
the operator, the system and the multimeter at risk.
The use of repaired fuses or the short-circuiting of the
fuse holder is not permissible.

~; 6.3 mm x 32 mm

~; 6.3 mm x 32 mm

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Fuse Testing

Note!

➭ Take out the fuse to be tested.
➭ Set the function selector switch to .
➭ Press the yellow function key to select .
➭ Connect the measurement cable with the „V, Ω, ,

F“ socket.

➭ Measure the resistance of the fuse.
➭ A continuous acoustic signal and the display of approx.

10.2 Ω indicate that the fuse for the mA current range is
OK.

➭ A continuous acoustic signal and the display of approx.

0.0 Ω indicate that the fuse for the A current range is OK.

If a value other than those indicated above or the over­flow symbol „OL“ is indicated, the corresponding fuse
must be replaced.

16.3 Housing

No special maintenance is required for the housing.
Excessive contamination has an adverse effect on isolation

and reduces input resistance.
Keep outside surfaces clean. Use a slightly dampened cloth for

cleaning. Avoid the use of cleansers, abrasives or solvents.

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16.4 Returns and Environmentally Sound Disposal

Pb Cd Hg

The instrument is a category 9 product (monitoring and control
instrument) in accordance with ElektroG (German Electrical
and Electronic Device Law).

We identify our electrical and electronic devices in
accordance with WEEE 2012/19/EU and ElektroG
using the symbol shown at the right per
DIN EN 50419.

These devices may not be disposed of with the trash. Please
contact our service department regarding the return of old
devices (see address in Section 18).

If you use batteries or rechargeable batteries in your instrument or
accessories which no longer function properly, they must be
duly disposed of in accordance with the applicable national
regulations.
Batteries or rechargeable batteries may contain harmful sub­stances or heavy metals such as lead (Pb), cadmium (Cd) or
mercury (Hg).

The symbol shown at the right indicates that batteries
or rechargeable batteries may not be disposed of with
the trash, but must be delivered to collection points
specially provided for this purpose.

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19 Manufacturer‘s Warranty

Digital multimeters of the METRALINE DM series are guaran­teed for a period of 3 years after shipment. The manufacturer’s
warranty covers materials and workmanship. Damage resulting
from use for any other than the intended purpose or operating
errors, as well as any and all consequential damages are
excluded.
Kindly register each device at myGMC after purchase in order
to benefit from the 3 year warranty.

Edited in Germany • Subject to change without notice • A pdf version is available on the
Internet

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