METREL MD 9030 User manual

METREL MD 9030
True RMS Electrical & Electronic Bench and Field
Service Digital Multimeter with Temperature
MD 9030
User Manual
Bedienungsanleitung
Navodilo za uprabo
Version 2.1, Code no. 20 751 292

2
Distributor:
METREL d.d.
Ljubljanska cesta 77
1354 Horjul
Slovenia
e-mail: [email protected]
web site: http://www.metrel.si/
Metrel GmbH
Mess und Prüftechnik
Orchideenstrasse 24
90542 Eckental -Brand
Germany
E-mail: [email protected]
Internet: http://www.metrel.de/
Metrel UK Ltd.
Test & Measurement
Unit 16, 1st Qtr Business Park
Blenheim Road
Epsom
Surrey
KT19 9QN,
Great Britain
E-mail: [email protected]
Internet: http://www.metrel.co.uk
© 2007 –2016 METREL
Mark on your equipment certifies that this equipment meets the requirements of the EC
(European Community) regulations concerning safety and electromagnetic compatibility.
No part of this publication may be reproduced or utilized in any form or by any means
without permission in writing from METREL.

MD 9030 TRMS Electrical & Electronic DMM with Temperature Table of contents/ Inhalt
3
Table of contents/ Inhalt/ Vsebina
English
1 Safety ...........................................................................................................................4
2 Cenelec Directives........................................................................................................5
3 Product Description ......................................................................................................6
4 Operation......................................................................................................................7
5 Maintenance...............................................................................................................12
6 Specification ...............................................................................................................13
Deutsch
1 Sicherheit....................................................................................................................18
2 Cenelec-Richtlinien.....................................................................................................19
3 Produktbeschreibung..................................................................................................20
4 Betrieb........................................................................................................................21
5 Wartung......................................................................................................................26
6 Technische Daten.......................................................................................................28
Slovensko
1 Varnost.......................................................................................................................33
2 Smernice CENELEC...................................................................................................34
3 Opis izdelka................................................................................................................35
4 Obratovanje................................................................................................................36
5 Vzdrževanje................................................................................................................42
6 Tehnični podatki..........................................................................................................44

MD 9030 TRMS Electrical & Electronic DMM with Temperature Safety
4
1 Safety
This manual contains information and warnings that must be followed for operating the
instrument safely and maintaining the instrument in a safe operating condition. If the
instrument is used in a manner not specified by the manufacturer, the protection
provided by the instrument may be impaired. The meter is intended only for indoor use.
The meter (all versions) is protected, against the users, by double insulation per
IEC/UL/EN61010-1 Ed. 3.0, IEC/EN61010-2-030 Ed. 1.0, IEC/EN61010-2-033 Ed. 1.0,
IEC/UL/EN61010-031 Ed. 1.1 and CAN/CSA-C22.2 No. 61010-1-12 Ed. 3.0 to Category
II 1000 Volts, CAT III 600Volts and CAT IV 300Volts AC & DC.
Terminals (to COM) measurement category:
V / A / mAA: Category II 1000V, Category III 600V and Category IV 300V AC & DC.
PER IEC61010 OVERVOLTAGE INSTALLATION CATEGORY
OVERVOLTAGE CATEGORY II
Equipment of OVERVOLTAGE CATEGORY II is energy-consuming equipment to be
supplied from the fixed installation.
Note –Examples include household, office, and laboratory appliances.
OVERVOLTAGE CATEGORY III
Equipment of OVERVOLTAGE CATEGORY III is equipment in fixed installations.
Note –Examples include switches in the fixed installation and some equipment for
industrial use with permanent connection to the fixed installation.
OVERVOLTAGE CATEGORY IV
Measurement Category IV (CAT IV) is for measurements performed at the source of the
low-voltage installation. Examples are electricity meters and measurements on primary
overcurrent protection devices and ripple control units
TERMS IN THIS MANUAL
WARNING identifies conditions and actions that could result in serious injury or even
death to the user.
CAUTION identifies conditions and actions that could cause damage or malfunction
in the instrument.
WARNING
To reduce the risk of fire or electric shock, do not expose this product to rain or
moisture. To avoid electrical shock hazard, observe the proper safety precautions when
working with voltages above 60 VDC or 30 VAC rms. These voltage levels pose a
potential shock hazard to the user. Do not touch test lead tips or the circuit being tested
while power is applied to the circuit being measured. Keep your fingers behind the
finger guards of the test leads during measurement. Inspect test leads, connectors, and
probes for damaged insulation or exposed metal before using the instrument. If any
defects are found, replace them immediately. Do not measure any circuit that draws
more than the current rating of the protection fuse. Do not attempt a current

MD 9030 TRMS Electrical & Electronic DMM with Temperature Cenelec Directives
5
measurement where the open circuit voltage is above the protection fuse voltage rating.
Suspected open circuit voltage can be checked with voltage functions. Never attempt a
voltage measurement with the test lead inserted into the A/mA or A input jack. Only
replace the blown fuse with the proper rating as specified in this manual. Only use the
test lead provided with the equipment or UL Listed Probe Assembly.
CAUTION
Disconnect the test leads from the test points before changing functions. Always set the
instrument to the highest range and work downward for an unknown value when using
manual ranging mode.
INTERNATIONAL ELECTRICAL SYMBOLS
!
Caution ! Refer to the explanation in this Manual
Caution ! Risk of electric shock
Earth (Ground)
Double Insulation or Reinforced insulation
Fuse
AC--Alternating Current
DC--Direct Current
2 Cenelec Directives
The instruments conform to CENELEC Low-voltage directive 2006/95/EC and
Electromagnetic compatibility directive 2004/108/EC.

MD 9030 TRMS Electrical & Electronic DMM with Temperature Product Description
6
3 Product Description
This user's manual uses only representative model for illustrations. Please refer
specification details for function availability to each model.
3-3/4 digits 4000 counts
LCD display
Push-buttons for special
functions & features
Selector to turn the Power
On or Off and select a
function
Input Jack (+) for 10A (20A
for 30sec) current function
Input Jack (+) for all functions
EXCEPT current (  A, mA, A)
function
Common (Ground reference)
Input Jack (-) for all functions
Input Jack (+) for milli-amp
and micro-amp functions

MD 9030 TRMS Electrical & Electronic DMM with Temperature Operation
7
4 Operation
DC Voltage, AC Voltage, & Hz Frequency functions
Note:
AC 400.0mV range selection is by RANGE button manually, and is specified from AC
10mV (AC 40mV for True RMS model BM807) and up.
DC 400.0mV range is designed with 1000Mhigh input impedance for least current
drain in measuring small signals, and can cope better with most commercially available
voltage output transducers and adapters. The non-zero display reading is normal when
the meter inputs are open circuit, which will not affect actual measurement accuracy.
Open input is actually a floating condition, which is not a zero-volt-input condition. The
meter will show zero or close to zero reading when the inputs are shorted.
Resistance, and Continuity functions
Defaults at . Press SELECT button momentarily to select Continuity function
which is convenient for checking wiring connections and operation of switches. A
continuous beep tone indicates a complete wire.
display shows OL if the diode is good. Any other readings indicate the diode is resistive
or shorted (defective).

MD 9030 TRMS Electrical & Electronic DMM with Temperature Operation
8
CAUTION
Using Resistance, Continuity, Diode or Capacitance function in a live circuit will produce
false results and may damage the instrument. In many cases the suspected component
must be disconnected from the circuit to obtain an accurate measurement reading.
Diode test, Capacitance functions
Defaults at . Press SELECT button momentarily 2 times to select Diode test
function. Normal forward voltage drop (forward biased) for a good silicon diode is
between 0.400V to 0.900V. A reading higher than that indicates a leaky diode
(defective). A zero reading indicates a shorted diode (defective). An OL indicates an
open diode (defective). Reverse the test leads connections (reverse biased) across the
diode. The digital display shows OL if the diode is good. Any other readings indicate the
diode is resistive or shorted (defective).
Defaults at . Press SELECT button momentarily 3 times to select Capacitance
function. Relative zero mode can be used to zero out the parasitic capacitance of the

MD 9030 TRMS Electrical & Electronic DMM with Temperature Operation
9
leads and the internal protection circuitry of the meter when measuring low capacitance
in the order of Pico Farad (pF).
CAUTION
Discharge capacitors before making any measurement. Large value capacitors should
be discharged through an appropriate resistance load
A, mA, and A Current functions
Default at DC. Press SELECT button momentarily to select AC.

MD 9030 TRMS Electrical & Electronic DMM with Temperature Operation
10
CAUTION
When measuring a 3-phase system, special attention should be taken to the phase-to-
phase voltage which is significantly higher than the phase-to-earth voltage. To avoid
exceeding the voltage rating of the protection fuse(s) accidentally, always consider the
phase-to-phase voltage as the working voltage for the protection fuse(s).
Beep-Jack™ Input Warning
The meter beeps to warn the user against possible damage to the meter due to
improper connections to the A, mA, or A input jacks when other function (like voltage
function) is selected.
Temperature function
Be sure to insert the banana plug type-K temperature bead probe AMD9023 (Optional
purchase) with correct polarities. Defaults at degree C (Celsius). Press SELECT
button momentarily to select degree F (Fahrenheit). You can also use a plug adapter
AMD 9024 (Optional purchase) with banana pins to type-K socket to adapt other type-K
standard mini plug temperature probes.
Relative zero mode
Relative zero mode allows the user to offset the meter consecutive measurements
with the displaying reading as the reference value. The display will now show readings
relative to the stored reference value. That is, display = reading - stored value. Press
the button momentarily to activate or to exit relative zero mode.

MD 9030 TRMS Electrical & Electronic DMM with Temperature Operation
11
Backlighted display
Press the SELECT button for 1 second or more to turn on or off the display backlight
function.
Manual or Auto-ranging
Press the RANGE button momentarily to select manual-ranging mode, and the meter
will remain in the range it was in, the LCD annunciator turns off. Press the button
momentarily again to step through the ranges. Press and hold the button for 1 second
or more to resume auto-ranging mode.
Note: Manual ranging mode feature is not available in Hz & Cx functions.
HOLD
The hold feature freezes the display for later view. Press the HOLD button
momentarily to activate or to exit the hold feature.
MAX
The max feature compares and displays the measured maximum value as fast as 25ms
in a single range, and with automatic up range capability. Press the MAX button for 1
second or more to activate or to exit the max feature in the voltage or current functions.
Sleep Mode
The meter will enter a low power consumption sleep mode automatically to extend
battery life after approximately 30 minutes of no rotary-switch or push button operations.
To wake up the meter from sleep mode, press any buttons momentarily or turn the
rotary-switch to an adjacent position. Always set the rotary-switch to the OFF position
manually when the meter is not in use.

MD 9030 TRMS Electrical & Electronic DMM with Temperature Maintenance
12
5 Maintenance
WARNING
To avoid electrical shock, disconnect the meter from any circuit, remove the test leads
from the input jacks and turn OFF the meter before opening the case. Do not operate
with open case.
Cleaning and Storage
Periodically wipe the case with a damp cloth and mild detergent; do not use abrasives
or solvents. If the meter is not to be used for periods of longer than 60 days, remove the
batteries and store them separately
Trouble Shooting
If the instrument fails to operate, check batteries and test leads etc., and replace as
necessary. Double check operating procedure as described in this user’s manual.
If the instrument voltage-resistance input terminal has subjected to high voltage
transient (caused by lightning or switching surge to the system) by accident or abnormal
conditions of operation, the series fusible resistors will be blown off (become high
impedance) like fuses to protect the user and the instrument. Most measuring functions
through this terminal will then be open circuit. The series fusible resistors and the spark
gaps should then be replaced by qualified technician. Refer to the LIMITED
WARRANTY section for obtaining warranty or repairing service.
Battery and Fuse replacement
Battery use:
Standard 1.5V AAA Size (NEDA 24A or IEC LR03) battery X 2
Standard CE Version MD 9030 series fuses:
Fuse (FS1) for AmA current input: 0.4A/1000V ac & dc, IR 30kA, F fuse, or better;
Dimension: 6 x 32 mm
Fuse (FS2) for A current input: 11A/1000V ac & dc, IR 20kA, F fuse, or better;
Dimension: 10 x 38 mm
Battery replacement for models with battery
access door:
Loosen the 2 screws from the battery access
door of the case bottom. Lift the battery access
door and thus the battery compartment up.
Replace the battery. Re-fasten the screws.
Fuse replacement (and also Battery
replacement for splash proof version without
battery access door):
Loosen the 4 screws from the case bottom. Lift
the end of the case bottom nearest the input
jacks until it unsnaps from the case top.
Replace the blown fuse(s) and/or the battery.
Replace the case bottom, and ensure that all
the gaskets are properly seated and the two
snaps on the case top (near the LCD side) are
engaged. Re-fasten the screws..

MD 9030 TRMS Electrical & Electronic DMM with Temperature Specification
13
6 Specification
General Specifications
Display: 3-3/4 digits 4000 counts LCD display
Polarity: Automatic
Update Rate: 3 per second nominal
Operating Temperature: 0C to 40C
Relative Humidity: Maximum relative humidity 80% for temperature up to 31C decreasing
linearly to 50% relative humidity at 40C
Altitude: Operating below 2000m
Pollution degree: 2
Storage Temperature: -20OC to 60OC, < 80% R.H. (with battery removed)
Temperature Coefficient: nominal 0.15 x (specified accuracy)/OC @(0OC -18OC or 28OC -40OC), or
otherwise specified
Sensing: True RMS for MD 9030
Safety: The meter (all versions) is protected, against the users, by double
insulation per IEC/UL/EN61010-1 Ed. 3.0, IEC/EN61010-2-030 Ed. 1.0,
IEC/EN61010-2-033 Ed. 1.0, IEC/UL/EN61010-031 Ed. 1.1 and
CAN/CSA-C22.2 No. 61010-1-12 Ed. 3.0 to Category II 1000 Volts, CAT
III 600Volts and CAT IV 300Volts AC & DC.
Standard CE version MD 9030 series Terminals (to COM) ratings:
V / A / mAA : Category II 1000V, CAT III 600V and CAT IV 300V AC & DC.
Overload Protections :
Standard CE MD9030 version series:
A & mA : 0.4A/1000V ac & dc, IR 30kA or better, F fuse;
A : 11A/1000V ac & dc, IR 20kA or better, F fuse;
V , & Others 1050 Vrms, 1450 Vpeak
Transient protection: 6 kV (1.2/50s surge)
Power Supply: 1.5V AAA Size (NEDA 24A or IEC LR03) battery X 2
Power Consumption: 3.2 mA typical
Low Battery: Below approx. 2.4V
E.M.C.: Meets EN61326(1997, 1998/A1), EN61000-4-2(1995), and EN61000-4-3(1996)
In an RF field of 3V/m:
Capacitance function is not specified
AC 4.000V range: Total Accuracy = Specified Accuracy + 700 digits
AC 400.0A range: Total Accuracy = Specified Accuracy + 300 digits
Other function ranges: Total Accuracy = Specified Accuracy + 40 digits
Performance above 3V/m is not specified

MD 9030 TRMS Electrical & Electronic DMM with Temperature Specification
14
Sleep Mode Timing: Idle for 30 minutes
Sleep Mode Consumption: 360A typical for MD 9030
Dimension: L186mm X W87mm X H35.5mm; L198mm X W97mm X H55mm with holster
Weight: 296 gm; 396 gm with holster
Special Features: 25ms Max Hold; Data Hold; Relative zero mode; Beep-jack™ input warning;
Back-lighted display
Accessories: Test leads (pair), batteries installed, user's manual
Optional Accessories:Banana plug type-K bead probe AMD9023 x 1 (Banana pins to type-K socket
plug adapter AMD9024
Electrical Specifications
Accuracy is ±(% reading digits + number of digits) or otherwise specified, at 23 OC ±5 OC & less than 75%
R.H. Model MD 9030 True RMS accuracy of ACV & ACA is specified from 5 % (10% for AC400.0mV
range) to 100 % of range, or otherwise specified. Maximum Crest Factor < 1.75 : 1 at full scale & < 3.5 : 1
at half scale, and with frequency components within the specified frequency bandwidth for non-sinusoidal
waveforms
DC Voltage
RANGE
Accuracy
400.0 MV
0.3% + 4D
4.000V, 40.00V,
400.0V
0.5% + 3D
1000V
1.0% + 4D
NMRR:>50dB @ 50/60Hz
CMRR:>120dB @ DC, 50/60Hz, Rs=1k
Input impedance : 10M, 30pF nominal
(1000Mfor 400.0mV range)
Max Hold (Voltage & Current)
Specified accuracy ± 50 digits for changes > 25ms in duration
AC Voltage
RANGE
Accuracy
50HZ -- 500HZ
400.0mV*
4.0% + 5d
4.000V, 40.00V,
400.0V
1.5% + 5d
1000V
4.0% + 5d
CMRR:>60dB @ DC TO 60Hz, RS=1k
Input Impedance: 10M, 30pF nominal
(1000Mfor 400.0mV range)
*Selection by RANGE button manually, and is specified from AC 10mV (AC 40mV for
True RMS model MD 9030) and up

MD 9030 TRMS Electrical & Electronic DMM with Temperature Specification
15
DC Current
RANGE
Accuracy
Burden
Voltage
400.0A
2.0% + 5d
0.15mV/A
4000A
1.2% + 3d
0.15mV/A
40.00mA
2.0% + 5d
3.3mV/mA
400.0mA
1.2% + 3d
3.3mV/mA
4.000A
2.0% + 5d
0.03V/A
10.00A*
1.2% + 3d
0.03V/A
*10A continuous, 20A for 30 second max with 5 minutes cool down interval
AC Current
RANGE
Accuracy 1)
Burden
Voltage
50Hz -- 500Hz
400.0A
2.0% + 6d
0.15mV/A
4000A
1.5% + 4d
0.15mV/A
40.00mA
2.0% + 6d
3.3mV/mA
400.0mA
1.7% + 4d
3.3mV/mA
4.000A
2.0% + 6d
0.03V/A
10.00A*
1.8% + 4d
0.03V/A
*10A continuous, 20A for 30 second max with 5 minutes cool down interval
Diode Tester
Open Circuit Voltage
Test Current
(Typical)
< 1.6 VDC
0.25mA
Type-K Temperature
RANGE
Accuracy*
-20OC TO 300 OC
2%+ 3OC
-4OF TO 572 OF
2%+ 6OF
*Type-K thermocouple range & accuracy not included
Audible Continuity Tester
Audible threshold : between 10and 120
Ohms
RANGE
Accuracy
400.0
0.8% + 6d
4.000k, 40.00k,
400.0k
0.6% + 4d
4.000M
1.0% + 4d
40.00M
2.0% + 4d

MD 9030 TRMS Electrical & Electronic DMM with Temperature Specification
16
Open Circuit Voltage : 0.4VDC typical
Capacitance
RANGE*
Accuracy**
500.0nF, 5.000F,
50.00F, 500.0F,
3000F
3.5%*** + 6d
*Additional 50.00nF range accuracy is not specified
**Accuracies with film capacitor or better
***Specified with battery voltage above 2.8V (approximately half full battery). Accuracy
decreases gradually to 12% at low battery warning voltage of approximately 2.4V
Hz Frequency
RANGE*
Accuracy**
50.00Hz, 500.0Hz,
5.000kHz, 50.00kHz,
500.0kHz, 1.000MHz
0.5%+4d
*Additional 5.000Hz range accuracy & sensitivity are not specified
**Accuracy is specified at < 20VAC rms
Input Signal : Square wave with duty cycle > 40% & < 70%; or Sine wave Vrms
AC
Sensitivity :
10Hz--20Hz : > Sine 0.9Vrms;
20Hz--500kHz : > 2.6Vp; or Sine 1.9Vrms;
500kHz--1MHz : > 4.2Vp; or Sine 3Vrms
Update Rate : 2 per second nominal

MD 9030 TRMS Electrical & Electronic DMM with Temperature Limited Warranty
17
LIMITED WARRANTY
This equipment is warranted against any defects of manufacture or materials.
During the warranty period (2 years), defective parts will be replaced, the manufacturer
reserving the right to repair or replace the product. In the event of the equipment being
returned to the after sale department or to a local agency, the outward transport is
payable by the consignor. For delivery indicate, by means of an enclosed note, as clear
as possible, the reasons for returning it. Any damage caused by shipment using not
original packing will be charged in any case to the consignor.
The manufacturer will not be responsible for any damage to persons or things.
The warranty is not valid in the following cases:
Accessories and battery are not included in warranty.
Repairs following unsuitable use of the equipment.
Repairs necessitated by attempts to repair by a person not approved by the
manufacturer.
Modification of the equipment without the explicit authorisation of the manufacturer.
Adaptation to a specific application not provided for in the specifications of the
equipment or the user manual.
Damage after a drop, a shock or flooding.
The contents of this manual must not be reproduced in any form whatsoever without the
consent of the manufacturer.
Service
The life span of the equipment is 7 years. If the equipment should not work properly,
before the service, test the battery conditions, the test leads, etc., and change them if
necessary.
If the equipment still does not work check if your operating procedure agrees with the
latter described in this manual.
In the event of returning the equipment it must be re-sent to the after-sales service of
the local Metrel distributor, the outward transport is payable by customer. The delivery
must be agreed in advance with consignee. For delivery indicate, by means of an
enclosed note, as clear as possible, the reasons for returning it. Use only the original
packing. Any damage caused by delivery with NO original packing will be charged in
any case to the consignor.
THIS WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ALL OTHER WARRANTIES,
EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED
WARRANTY OR MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
OR USE. METREL WILL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT,
INCIDENTAL OR CONSEQUENTIAL DAMAGES.
PRINTED ON RECYCLABLE PAPER, PLEASE RECYCLE

MD 9030 Digitalmultimeter Sicherheit
18
1 Sicherheit
Diese Anleitung enthält Informationen und Warnungen, die befolgt werden müssen, um
das Instrument sicher zu betreiben und in sicherem Betriebszustand zu erhalten. Wenn
das Gerät auf eine Weise benutzt wird, die nicht vom Hersteller angegeben wurde, kann
der Schutz, den das Gerät bietet, beeinträchtigt werden. Das Messgerät ist nur für den
Gebrauch in Innenräumen bestimmt.
Das Messgerät (alle Versionen) ist gegenüber den Anwendern durch Schutzisolierung
nach IEC/UL/EN61010-1 Ed. 3.0, IEC/EN61010-2-030 Ed. 1.0, IEC/EN61010-2-033 Ed.
1.0, IEC/UL/EN61010-031 Ed. 1.1 und CAN/CSA-C22.2 No. 61010-1-12 Ed. 3.0 nach
CAT II 1000 Volts, CAT III 600Volts and CAT IV 300Volts AC & DC geschützt.
Serie MD9030, Standard-CE-Version, Nennwerte der Anschlüsse (nach COM):
V / A / mAA: Category II 1000V, Category III 600V and Category IV 300V AC & DC
ÜBERSPANNUNGS-INSTALLATIONSKATEGORIE NACH IEC61010
ÜBERSPANNUNGSKATEGORIE II
Eine Einrichtung der ÜBERSPANNUNGSKATEGORIE II ist eine energieverbrauchende
Einrichtung, die von der festen Anlage versorgt werden muss.
Anmerkung –Beispiele sind Haushalts-, Büro- und Laborgeräte.
ÜBERSPANNUNGSKATEGORIE III
Eine Einrichtung der ÜBERSPANNUNGSKATEGORIE III ist eine Einrichtung in festen
Anlagen.
Anmerkung –Beispiele sind Schalter in der festen Anlage und einige Einrichtungen für
den industriellen Gebrauch mit dauernder Verbindung zur festen Anlage.
ÜBERSPANNUNGSKATEGORIE IV
Messkategorie CAT IV gilt für Messungen an der Quelle der
Niederspannungsinstallation. Beispiele sind elektrische Messgeräte und Messungen an
Geräten für primären Überstromschutz sowie Rundsteueranlagen.
Begriffe in dieser Anleitung:
WARNUNG Gibt Bedingungen oder Aktionen an, die zu schweren Verletzungen oder
sogar zum Tod des Anwenders führen könnten.
VORSICHT Gibt Bedingungen oder Aktionen an, die Beschädigungen oder
Fehlfunktionen des Instruments verursachen könnten.
Begriffe in dieser anleitung
WARNUNG Gibt Bedingungen oder Aktionen an, die zu schweren Verletzungen oder
sogar zum Tod des Anwenders führen könnten.
VORSICHT Gibt Bedingungen oder Aktionen an, die Beschädigungen oder
Fehlfunktionen des Instruments verursachen könnten.

MD 9030 Digitalmultimeter Cenelec-Richtlinien
19
WARNUNG
Um die Brand- oder Stromschlaggefahr zu reduzieren, setzen Sie dieses Produkt nicht
Regen oder Feuchtigkeit aus. Um Stromschlaggefahr zu vermeiden, beachten Sie die
geeigneten Sicherheitsmaßnahmen bei Arbeiten an Spannungen über 60 VDC oder 30
Veff. Diese Spannungspegel stellen eine mögliche Stromschlaggefahr für den Anwender
dar. Berühren Sie die Messspitzen oder den zu prüfenden Kreis nicht, während er unter
Spannung steht. Halten Sie Ihre Finger bei der Messung hinter den
Fingerschutzschilden an den Prüfleitungen. Untersuchen Sie vor der Verwendung des
Instruments die Prüfleitungen, Steckverbinder und Sonden auf beschädigte Isolierung
oder frei liegendes Metall. Wenn Sie Defekte finden, wechseln Sie die Teile sofort aus.
Messen Sie keinen Strom, der den Nennstrom der Schutzsicherung übersteigt.
Versuchen Sie keine Strommessung an einem Kreis, dessen Leerlaufspannung über
der Nennspannung der Schutzsicherung liegt. Die vermutete Leerlaufspannung sollte
mit den Spannungsfunktionen überprüft werden. Versuchen Sie niemals eine
Spannungsmessung, wenn die Prüfleitung in der A/mA- oder A-Eingangsbuchse
steckt. Ersetzen Sie eine durchgebrannte Sicherung nur durch eine mit den richtigen
Nennwerten, wie sie in dieser Anleitung angegeben sind.
VORSICHT
Trennen Sie vor dem Umschalten von Funktionen die Prüfleitungen von den
Prüfpunkten. Stellen Sie das Instrument immer auf den höchsten Bereich und arbeiten
Sie sich nach unten, wenn Sie bei einem unbekannten Wert die manuelle Bereichswahl
verwenden.
INTERNATIONALE ELEKTROSYMBOLE
!
Vorsicht! Siehe Erklärungen in dieser Anleitung
Vorsicht! Es besteht die Gefahr eines Stromschlags!
Erde (Erdung)
Doppelisolierung oder Schutzisolierung
Sicherung
AC--Wechselstrom
DC—Gleichstrom
2 Cenelec-Richtlinien
Die Instrumente entsprechen der CENELEC-Niederspannungsrichtlinie 2006/95/EC und
der Richtlinie „Elektromagnetische Verträglichkeit“ 2004/108/EC

MD 9030 Digitalmultimeter Produktbeschreibung
20
3 Produktbeschreibung
Diese Bedienungsanleitung verwendet ein repräsentatives Modell nur zur Illustration.
Bitte schauen Sie in den Einzelheiten der Spezifikation nach, welche Funktionen für
jedes Modell zur Verfügung stehen.
3-3/4-stelliges
LCD-Display (4000 Zähler)
Tasten für Sonderfunktionen
Wahlschalter zum EIN-/AUS-
Schalten und Wählen einer
Funktion
Eingangsbuchse (+) für die
Stromfunktion 10 A (20 A für 30
s)
Eingangsbuchse (+) für alle
Funktionen AUSSER der
Stromfunktion (A, mA, A)
Gemeinsame (Bezugsmasse-)
Eingangsbuchse (-) für alle
Funktionen
Eingangsbuchse (+) für die
Milliampere- und Mikroampere-
Funktionen