Velleman DVM903 User manual

DVM903
CAT II 700 V / CAT IV 600 V
USER MANUAL 3
HANDLEIDING 18
MODE D'EMPLOI 33
MANUAL DEL USUARIO 48
BEDIENUNGSANLEITUNG 63
INSTRUKCJA OBSŁUGI 78
MANUAL DO UTILIZADOR 94

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USER MANUAL
1. Introduction
To all residents of the European Union
Important environmental information about this product
This symbol on the device or the package indicates that disposal
of the device after its lifecycle could harm the environment. Do
not dispose of the unit (or batteries) as unsorted municipal
waste; it should be taken to a specialized company for recycling.
This device should be returned to your distributor or to a local
recycling service. Respect the local environmental rules.
If in doubt, contact your local waste disposal authorities.
Thank you for choosing Velleman! Please read the manual thoroughly before
bringing this device into service. If the device was damaged in transit, do
not install or use it and contact your dealer.
2. Symbols
AC (Alternating Current)
DC (Direct Current)
Both AC and DC
Risk of Electric shock. A potentially hazardous voltage is
possible.
Caution: risk of danger, the manual must be consulted in all
cases where this symbol is marked.
Warning: a hazardous condition or action that may result in
injury or death
Caution: condition or action that may result in damage to the
meter or equipment under test
Double insulation (class 2-protection)
Earth
Fuse
Capacitor
Diode

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Continuity
3. General Guidelines
Refer to the Velleman®Service and Quality Warranty on the last pages of
this manual.
This symbol indicates: Read instructions
Not reading the instructions and manual can lead to damage,
injury or death.
This symbol indicates: Danger
A hazardous condition or action that may result in injury or
death.
This symbol indicates: Risk of danger/damage
Risk of a hazardous condition or action that may result in
damage, injury or death.
This symbol indicates: Attention; important information
Ignoring this information can lead to hazardous situations.
WARNING: To avoid electrical shock always disconnect the
test leads prior to opening the housing. To prevent fire hazards,
only use fuses with the same ratings as specified in this manual.
Remark: refer to the warning on the battery compartment.
Avoid cold, heat and large temperature fluctuations. When the
unit is moved from a cold to a warm location, leave it switched
off until it has reached room temperature. This to avoid
condensation and measuring errors.
Protect this device from shocks and abuse. Avoid brute force
when operating.
Pollution degree 2-device. For indoor use only. Keep this device
away from rain, moisture, splashing and dripping liquids. Not for
industrial use. Refer to §8 Pollution degree.
Keep the device away from children and unauthorised users.
Risk of electric shock during operation. Be very careful
when measuring live circuits.

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There are no user-serviceable parts inside the device.
Refer to an authorized dealer for service and/or spare parts.
This is an installation category CAT IV measuring
instrument. Refer to §7 Overvoltage/installation category.
Read this addendum and the manual thoroughly. Familiarise
yourself with the functions of the device before actually using it.
All modifications of the device are forbidden for safety reasons.
Damage caused by user modifications to the device is not
covered by the warranty.
Only use the device for its intended purpose. Using the device in
an unauthorized way will void the warranty. Damage caused by
disregard of certain guidelines in this manual is not covered by
the warranty and the dealer will not accept responsibility for any
ensuing defects or problems.
4. Maintenance
There are no user-serviceable parts inside the device.
Refer to an authorized dealer for service and/or spare parts.
Before performing any maintenance activities, disconnect the test leads
from the jacks.
For instructions on replacing battery or fuse, refer to §11 Battery and fuse
replacement.
Do not apply abrasives or solvents to the meter. Use a damp cloth and mild
detergent for cleaning purposes.
5. During Use
Risk of electric shock during operation. Be very careful when
measuring live circuits.
•If the equipment is used in a manner not specified by the manufacturer,
the protection provided by the equipment may be impaired.
•Never exceed the limit value for protection. This limit value is listed
separately in the specifications for each range of measurement.
•Do not touch unused terminals when the meter is linked to a circuit
which is being tested.
•Never use the meter with CAT II installations when measuring voltages
that might exceed the safety margin of 600 V above earth ground.
Never use the meter with CAT IV installations when measuring voltages
that might exceed the safety margin of 300 V above earth ground.
•Set the range selector at its highest position if the intensity of the
charge to be measured is unknown beforehand.

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•Disconnect the test leads from the tested circuit before rotating the
range selector in order to change functions.
•When carrying out measurements on a TV set or switching power
circuits, always remember that the meter may be damaged by any high
amplitude voltage pulses at test points.
•Always be careful when working with voltages above 60 VDC or 30 VAC
rms. Keep your fingers behind the probe barriers at all times during
measurement.
•Never perform resistance, diode or continuity measurements on live
circuits. Make sure all capacitors in the circuit are depleted.
6. General Description
Refer to the illustration on page 2 of this manual:
1. Display
3 ½ digits, 7 segments, LCD
2. Function buttons
3. Rotary switch
4. “15A” jack
Insert the red test lead in this connector in order to measure a max.
current of 15 A.
5. “VHz” jack
Insert the red (positive) test lead in this connector to measure voltage,
resistance and frequency.
6. “COM” jack
Insert the black (negative) test lead.
7. “µAmA” jack
Insert the red (positive) test lead in this connector to measure current
(except 15 A).
7. Overvoltage/Installation Category
DMMs are categorized depending on the risk and severity of transient
overvoltage that might occur at the point of test. Transients are short-lived
bursts of energy induced in a system, e.g. caused by lightning strike on a
power line.

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The existing categories according EN 61010-1 are:
CAT
I
A CAT I-rated meter is suitable for measurements on protected
electronic circuits that are not directly connected to mains power,
e.g. electronics circuits, control signals…
CAT
II
A CAT II-rated meter is suitable for measurements in CAT I-
environments and mono-phase appliances that are connected to the
mains by means of a plug and circuits in a normal domestic
environment, provided that the circuit is at least 10 m apart from a
CAT III- or 20 m apart from a CAT IV-environment. E.g. household
appliances, portable tools…
CAT
III
A CAT III-rated meter is suitable for measurements in CAT I- and
CAT II-environments, as well as for measurements on (fixed) mono-
or poly-phased appliances which are at least 10 m apart from of a
CAT IV-environment, and for measurements in or on distribution
level equipment (fuse boxes, lighting circuits, electric ovens).
CAT
IV
A CAT IV-rated meter is suitable for measuring in CAT I-, CAT II-
and CAT III-environments as well as on the primary supply level.
Note that for all measurements on equipment for which the supply
cables run outdoors (either overhead or underground) a CAT IV
meter must be used.
Warning:
This device was designed in accordance with EN 61010-1 installation
category CAT II 700 V and CAT IV 600 V. This implies that certain
restrictions in use apply that are related to voltages and voltage peaks
which can occur within the environment of use. Refer to the table above.
This device is only suitable for measurements up to 700 V in
CAT II and up to 600 V in CAT IV
8. Pollution Degree
IEC 61010-1 specifies different types of pollution environments, for which
different protective measures are necessary to ensure safety. Harsher
environments require more protection, and the protection against the
pollution which is to be found in a certain environment depends mainly on
the insulation and the enclosure properties. The pollution degree rating of
the DVM indicates in which environment the device may be used.
Pollution
degree 1
No pollution or only dry, nonconductive pollution occurs. The
pollution has no influence. (only to be found in hermetically
sealed enclosures)

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Pollution
degree 2
Only nonconductive pollution occurs. Occasionally,
temporary conductivity caused by condensation is to be
expected. (home and office environments fall under this
category)
Pollution
degree 3
Conductive pollution occurs, or dry nonconductive pollution
occurs that becomes conductive due to condensation that is
to be expected.
(industrial environments and environments exposed to
outside air - but not in contact with precipitation)
Pollution
degree 4
The pollution generates persistent conductivity caused by
conductive dust or by rain or snow. (exposed outdoor
environments and environments where high humidity levels
or high concentrations of fine particles occur)
Warning: This device was designed in accordance with EN 61010-1
pollution degree 2. This implies that certain restrictions in use apply that
are related to pollution which can occur within the environment of use. Refer
to the table above.
This device is only suitable for measurements in Pollution
degree class 2 environments.
9. Specifications
This device is not calibrated when purchased!
Regulations concerning environment of use:
Use this meter only for measurements in CAT I, CAT II, CAT III and CAT IV
environments (see §7).
Use this meter only in a pollution degree 2 environment (see §8).
Ideal working conditions include:
temperature: 0 °C to 40 °C (32 °F to 104 °F)
relative humidity: max. 80 % RH
altitude: max. 2000 m (6560 ft)
voltage.............................................................................. 700 V
fuse protection
F0.8 A/1000 VDC, 6.75 x 33 mm
F15 A/1000 VDC, 6.75 x 33 mm
power supply ....................................................... 1 x 3.7 V (incl.)
display ............................................................. LCD, 6000 counts
ranging mode .......................................................... auto/manual
continuity buzzer................................................................... yes
diode test ............................................................................. yes
low-battery indication ............................................................ yes
data hold.............................................................................. yes
backlight .............................................................................. yes

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auto power-off ...................................................................... yes
dimensions .....................................................190 x 100 x 40 mm
weight (with battery) .......................................................... 320 g
storage environment
temperature .................................................. -20 °C to 60 °C
humidity ............................................................. < 90 % RH
test lead probe.......... CAT II 700 V / CAT IV 600 V, 15 A; L = 90 cm
IP rating..............................................................................IP20
9.1 DC VOLTAGE
Do not measure circuits that may contain voltages
> 700 VDC or > 700 VAC
range
resolution
accuracy
600 mV
0.1 mV
± (0.5 % + 2)
6 V
1 mV
60 V
10 mV
600 V
100 mV
700 V
1 V
± (0.8 % + 2)
Overload protection: 700 V DC or AC rms
Impedance: 10 MΩ
9.2 AC VOLTAGE
Do not measure circuits that may contain voltages
> 700 VDC or > 700 VAC
range
resolution
accuracy
6 V
1 mV
± (0.8 % + 3)
60 V
10 mV
600 V
100 mV
700 V
1 V
± (1.2 % + 3)
AC true RMS
Frequency range: 40 Hz-2 kHz
Overload protection: 700 V DC or AC rms
Impedance: 10 MΩ

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9.3 DC CURRENT
Do not measure circuits that may contain voltages
> 700 VDC or > 700 VAC
range
resolution
accuracy
600 µA
0.1 µA
± (1.2 % + 2)
6 mA
1 µA
60 mA
10 µA
600 mA
100 µA
15 A
10 mA
± (2.0 % + 3)
Overload protection: F0.8 A/700 V fuse, F15 A/700 V fuse
Continuous testing maximum steady-state current of 1 A
9.4 AC CURRENT
Do not measure circuits that may contain voltages
> 700 VDC or > 700 VAC
range
resolution
accuracy
6 mA
1 µA
± (1.5 % + 3)
60 mA
10 µA
600 mA
100 µA
15 A
10 mA
± (2.5 % + 5)
AC true RMS
Frequency range: 40 Hz-2 kHz
Overload protection: F0.8 A/700 V fuse, F15 A/700 V fuse
Continuous testing maximum steady-state current of 1 A
9.5 RESISTANCE
Do not conduct resistance measurements on live
circuits
range
resolution
accuracy
600 Ω
0.1 Ω
± (1.0 % + 3)
6 kΩ
1 Ω
± (1.0 % + 2)
60 kΩ
10 Ω
600 kΩ
100 Ω
6 MΩ
1 kΩ
60 MΩ
10 kΩ
± (1.5 % + 3)
Overload protection: 700 V DC or AC rms

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9.6 CAPACITANCE
Do not conduct capacitance measurements on live
circuits
range
resolution
accuracy
9.999 nF
1 pF
± (3.0 % + 10)
99.99 nF
10 pF
± (2.5 % + 5)
999.9 nF
100 pF
9.999 µF
1 nF
99.99 µF
10 nF
± (5.0 % + 10)
999.9 µF
100 nF
± (10.0 % + 20)
9.999 mF
1 µF
99.99 mF
10 µF
Overload protection: 700 V DC or AC rms
9.7 DIODE AND CONTINUITY
Do not conduct diode or continuity measurements on
live circuits
range
description
test condition
display reads the
approximate forward
voltage of the diode
forward DC current ± 1.5 mA
reversed DC voltage ± 4 V
built-in buzzer sounds
if resistance < 50 Ω
open-circuit voltage ± 2 V
Overload protection: 700 V DC or AC rms

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9.8 FREQUENCY
Do not conduct frequency measurements on live circuits
range
resolution
accuracy
9.999 Hz
0.001 Hz
± (0.1 % + 5)
99.99 Hz
0.01 Hz
999.9 Hz
0.1 Hz
9.999 kHz
1 Hz
99.99 kHz
10 Hz
999.9 kHz
100 Hz
9.999 MHz
1 Hz
Sensitivity: sine wave 0.6 V rms, 1.5 V rms for 9.999 MHz
Overload protection: 700 V DC or AC rms
9.9 DUTY CYCLE
0.1-99 %: ± (2.0 % + 2), frequency < 10 kHz
Sensitivity: sine wave 0.6 V rms
Overload protection: 700 V DC or AC rms
9.10 TEMPERATURE
range
accuracy
resolution
°C/°F
-20 to 150 °C
-4 to 302 °F
± (3 °C + 1)
± (5 °F + 2)
1 °C/1 °F
151 to 1000 °C
303 to 1832 °F
± (3 % + 2)
± (3 % + 3)
NiCr-NiSi sensor
Overload protection: 700 V DC or AC rms
9.11 BATTERY TEST
range
accuracy
load current
resolution
1.5 V
± (5.0 % + 5)
50 mA
1 mV
9 V
5 mA
10 mV
Overload protection: F0.8 A/700 V fuse
9.12 NON-CONTACT AC VOLTAGE DETECTION (NCV)
Test voltage range: 90-1000 V AC rms
The built-in buzzer will sound when live voltage is detected.

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10. Operation
10.1 DC + AC VOLTAGE MEASUREMENT
Do not measure circuits that may contain voltages > 700 VDC or
> 700 VAC
Use extreme caution when measuring voltages higher than 60 VDC
or 30 VAC rms.
Always place your fingers behind the protective edges of the test
probes while measuring!
1. Set the rotary switch in the desired “ ” or “ ” position.
2. Connect the red test lead to the “VHz”jack and the black lead to the
“COM” jack.
3. Press SELECT to choose the “DC” or “AC” measurement.
4. Connect the test leads to the source being measured.
5. Read the voltage value and the polarity of the red test lead on the LCD
display.
6. On the AC range, press “Hz/%” to measure frequency or duty cycle.
Notes
•If the range is not known beforehand, set the selector switch to a high
range and lower gradually.
•An OVER-RANGE is indicated by OL or -OL. Set to a higher range.
•The maximum input voltage is 700 V rms.
10.2 DC CURRENT MEASUREMENT
Do not measure circuits that may contain voltages > 700 VDC or
> 700 VAC
Use extreme caution when measuring voltages higher than 60 VDC
or 30 VAC rms.
Always place your fingers behind the protective edges of the test
probes while measuring!
1. Set the rotary switch in the desired “ ”, “ ” or “ ” position.
2. Connect the red test lead to the “µAmA” jack and the black test lead to
the “COM” jack (switch the red lead to the “15A” jack for
measurements between 600 mA and 15 A).
3. Press SELECT to choose the “DC” or “AC” measurement.
4. Open the circuit in which the current is to be measured and connect
the test leads to the circuit IN SERIES.
5. Read the current value and the polarity of the red lead connection on
the LCD display.

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6. On the AC range, press “Hz/%” to measure frequency or duty cycle.
10.3 RESISTANCE MEASUREMENT
Do not conduct resistance measurements on live circuits. Make sure
all capacitors in the circuit are depleted.
1. Set the rotary switch in the desired “Ω ” position.
2. Connect the red test lead to the “VHz”jack and the black test lead to
the “COM” jack.
3. Connect the test leads to the resistor to be measured and read the
LCD display.
10.4 CAPACITANCE MEASUREMENT
Do not conduct capacitance measurements on live circuits. Make
sure all capacitors in the circuit are depleted.
1. Connect the red test lead to the "VHz" jack and the black test lead to
the "COM" jack.
2. Set the rotary switch in the appropriate " " range position.
3. Connect the test leads to the source to be measured and read the LCD
display.
10.5 DIODE AND CONTINUITY TEST
Do not conduct diode or continuity measurements on live circuits.
Make sure all capacitors in the circuit are depleted.
1. Connect the red test lead to the “VHz”jack and the black one to the
“COM” jack.
2. Set the selector switch to the desired “” position.
3. Press SELECT to choose the diode or audible continuity measurement.
4. For measuring the diode, connect the red test lead to the anode of the
diode to be tested and the black test lead to the cathode of the diode.
The approx. forward voltage drop of the diode will be displayed.
For measuring continuity, connect the test leads to two points of the
circuit to be tested. If continuity exists, the built-in buzzer will sound.

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10.6 FREQUENCY AND DUTY CYCLE MEASUREMENT
Do not conduct frequency or continuity measurements on live
circuits. Make sure all capacitors in the circuit are depleted.
1. Set the rotary switch in the “Hz” position.
2. Connect the red test lead to the “VHz” jack and the black one to the
“COM” jack.
3. Press “Hz/%” to choose the frequency or duty cycle measurement.
4. Connect the test leads to the source to be measured and read the LCD
display.
10.7 TEMPERATURE MEASUREMENT
1. Connect the red banana plug to the “VHz” jack and the black one to
“COM”.
2. Set the rotary switch in the “°C/°F” position.
3. Press SELECT to choose the °C or °F measurement.
4. Put the probe into the field to be measured and read the LCD display.
10.8 BATTERY TEST
1. Connect the red test lead to the “µAmA” jack and the black one to
“COM”.
2. Set the rotary switch to the “1.5V”, “9V” or “12V” position.
3. Put the probe into the field to be measured and read the LCD display.
10.9 NCV DETECTION
1. Set the rotary switch to the “NCV” position.
2. Hold the appliance so that its top is vertically and horizontally centered
and contacting the conductor. When live voltage ≥ 90 V AC rms, the
built-in buzzer will sound.
NOTES
1. Even without buzzer sounds, voltage may still exist. Do not rely solely
on non-contact voltage detection to determine the presence of voltage.
Detection operation may be subject to socket design, insulation
thickness and different type and other factors.
2. When the meter input terminals detect voltage, due to the influence of
present voltage, the voltage sensing indicator may also light.
3. Keep the appliance away from electrical noise sources during tests, i.e.
fluorescent and dimmable lights, motors, etc. These sources may
trigger NCV detection and invalidate the test.

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10.10 DATA HOLD
In any range, press HOLD to lock the display value. The DH sign will appear
on the display. Press again to exit.
10.11 MAX/MIN HOLD
Press MAX/MIN to lock the min or max value. Keep pressed for 2 seconds to
unlock.
10.12 RELATIVE MEASUREMENT
Press REL to measure the relative value. The auto range mode can be
changed to manual. Press it again to exit. This function is non effective on
the Hz/% measurement.
11. Battery and Fuse Replacement
WARNING: To avoid electrical shock always disconnect the test
leads prior to opening the housing. To prevent fire hazards, only
use fuses with the same ratings as specified in this manual.
Remark: refer to the warning on the battery compartment
There are no user-serviceable parts inside the device.
Refer to an authorized dealer for service and/or spare parts.
Disconnect the test leads from the test points and remove the test
leads from the measuring terminals before replacing the batteries
or fuses.
•When" " is displayed, the battery should be replaced.
•Fuses rarely need replacement and blown fuses almost always result
from human error.
To replace the battery:
•Switch off the meter.
•Remove the screw at the back of the case and gently open the housing.
•Remove the old battery and insert a new one.
•Close the housing and fasten the screw.
Battery: 1 x 3.7 V, make sure to respect the polarity
Fuses: F0.8 A/1000 V, 6.75 x 33 mm, F15 A/1000 V, 6.75 x 33 mm
Make sure the meter is closed tight and put the protective edge back in
place before using the meter.

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12. Troubleshooting
If the device acts abnormal while measuring, this means that the internal
fuse is defective.
Keep in mind that a low battery level could lead to incorrect measurements.
Replace the battery on a regular basis.
(Tip: the reduced luminosity of the backlight/LCD display indicates a low
battery level.)
Use this device with original accessories only. Velleman nv cannot
be held responsible in the event of damage or injury resulting from
(incorrect) use of this device. For more info concerning this product
and the latest version of this manual, please visit our website
www.velleman.eu. The information in this manual is subject to
change without prior notice.
© COPYRIGHT NOTICE
The copyright to this manual is owned by Velleman nv. All
worldwide rights reserved. No part of this manual may be copied,
reproduced, translated or reduced to any electronic medium or otherwise
without the prior written consent of the copyright holder.

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HANDLEIDING
1. Inleiding
Aan alle ingezetenen van de Europese Unie
Belangrijke milieu-informatie betreffende dit product
Dit symbool op het toestel of de verpakking geeft aan dat, als
het na zijn levenscyclus wordt weggeworpen, dit toestel schade
kan toebrengen aan het milieu. Gooi dit toestel (en eventuele
batterijen) niet bij het gewone huishoudelijke afval; het moet bij
een gespecialiseerd bedrijf terechtkomen voor recyclage. U
moet dit toestel naar uw verdeler of naar een lokaal
recyclagepunt brengen. Respecteer de plaatselijke milieuwetgeving.
Hebt u vragen, contacteer dan de plaatselijke autoriteiten
betreffende de verwijdering.
Dank u voor uw aankoop! Lees deze handleiding grondig door voor u het
toestel in gebruik neemt. Werd het toestel beschadigd tijdens het transport,
installeer het dan niet en raadpleeg uw dealer.
2. Symbolen
AC (wisselstroom)
DC (gelijkstroom)
Zowel wissel- als gelijkstroom
Elektrocutiegevaar. Er kan een potentieel gevaarlijke
spanning aanwezig zijn.
Opgelet: risico op gevaar, raadpleeg de handleiding telkens
dit symbool verschijnt.
Waarschuwing: gevaarlijke toestand of actie die kan leiden
tot letsel of de dood
Opgelet: Een onvoorzichtig gebruik kan de multimeter of het
toestel dat u wilt testen beschadigen.
Dubbele isolatie (klasse II-bescherming)
Aarding
Zekering
Condensator

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Diode
Continuïteit
3. Algemene richtlijnen
Raadpleeg de Velleman® service- en kwaliteitsgarantie achteraan deze
handleiding.
Dit symbool betekent Instructies lezen
Het niet lezen van deze instructies en de handleiding kan leiden
tot beschadiging, letsel of de dood.
Dit symbool betekent Gevaar
Gevaarlijke toestand of actie die kan leiden tot letsel of de dood.
Dit symbool betekent Risico op gevaar/schade
Risico op het ontstaan van een gevaarlijke toestand of actie die
kan leiden tot schade, letsel of de dood.
Dit symbool betekent Opgelet; belangrijke informatie
Het niet in acht nemen van deze informatie kan leiden tot een
gevaarlijke toestand.
WAARSCHUWING: Om elektrische schokken te vermijden,
ontkoppel altijd de meetsnoeren alvorens de behuizing te
openen. Om brand te voorkomen, gebruik enkel zekeringen met
dezelfde specificaties zoals aangegeven in deze handleiding.
Opmerking: zie waarschuwing op de achterkant van het
toestel.
Vermijd koude, hitte en grote temperatuurschommelingen. Als
het toestel van een koude naar een warme omgeving verplaatst
wordt, laat het toestel dan eerst voldoende op temperatuur
komen. Dit om meetfouten en condensvorming te vermijden.
Bescherm tegen schokken. Vermijd brute kracht tijdens de
bediening.
Toestel met vervuilingsgraad 2. Enkel geschikt voor gebruik
binnenshuis! Bescherm het toestel tegen regen, vochtigheid en
opspattende vloeistoffen. Niet geschikt voor industrieel gebruik.
Zie §8 Vervuilingsgraad.
Houd dit toestel uit de buurt van kinderen en onbevoegden.

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Elektrocutiegevaar tijdens het gebruik van deze
multimeter. Wees voorzichtig tijdens het meten van een circuit
onder spanning.
Er zijn geen onderdelen in het toestel die door de gebruiker
gerepareerd kunnen worden.
Contacteer uw verdeler voor eventuele reserveonderdelen.
Dit meetinstrument behoort tot de installatiecategorie
CAT IV. Zie §7 Overspanning-/installatiecategorie.
Lees het addendum en deze handleiding zorgvuldig door. Leer
eerst de functies van het toestel kennen voor u het gaat
gebruiken.
Om veiligheidsredenen mag u geen wijzigingen aanbrengen.
Schade door wijzigingen die de gebruiker heeft aangebracht aan
het toestel valt niet onder de garantie.
Gebruik het toestel enkel waarvoor het gemaakt is. Bij
onoordeelkundig gebruik vervalt de garantie. De garantie geldt
niet voor schade door het negeren van bepaalde richtlijnen in
deze handleiding en uw dealer zal de verantwoordelijkheid
afwijzen voor defecten of problemen die hier rechtstreeks
verband mee houden.
4. Onderhoud
Er zijn geen onderdelen in het toestel die door de gebruiker
gerepareerd kunnen worden.
Contacteer uw verdeler voor eventuele reserveonderdelen.
Ontkoppel de meetsnoeren van de aansluitingen voor het onderhoud of de
reiniging.
Voor informatie over het vervangen van de batterijen en de zekering, zie
§11 Batterijen en zekeringen vervangen.
Gebruik nooit agressieve schuur- of oplosmiddelen. Reinig de meter enkel
met een vochtige doek en een zachte detergent.
5. Tijdens het gebruik
Elektrocutiegevaar tijdens het gebruik van deze multimeter.
Wees voorzichtig tijdens het meten van een circuit onder spanning.
•Gebruik het toestel alleen zoals aangegeven door de fabrikant, anders
kan de bescherming waarmee het toestel is beschadigd raken.
•Overschrijd nooit de grenswaarden. Deze waarde wordt afzonderlijk in
de technische gegevens van elk meetbereik vermeld.
•Raak geen ongebruikte aansluitingen aan wanneer de meter gekoppeld
is aan een meetcircuit.