METREL MD 9016
Electrical Field Service Multimeter
MD 9016
User Manual
Bedienungsanleitung
Version 1.0, Code no. 20 751 998
Distributor:
METREL d.d.
Ljubljanska cesta 77
1354 Horjul
Slovenia
e-mail: HUmetrel@metrel.siU
web site: HUhttp://www.metrel.si/U
Metrel GmbH
Mess und Prüftechnik
Orchideenstrasse 24
90542 Eckental -Brand
Germany
E-mail: HUmetrel@metrel.deU
Internet:
HUhttp://www.metrel.de/U
Metrel UK
Test & Measurement
Unit 1, Hopton House,
Ripley Drive,
Normanton Industrial Estate,
Normanton,
West Yorkshire
WF6 1QT
Great Britain
E-mail: HUinfo@metrel.co.ukU
Internet: HUhttp://www.metrel.co.uk/U
© 2012 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.
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MD 9016 Digital Multimeter Series Table of contents / Inhalt
Table of contents/ Inhalt
English
1 Safety ...........................................................................................................................4
2 Cenelec Directives........................................................................................................6
3 Product Description ......................................................................................................7
4 Operation......................................................................................................................9
5 Specifications..............................................................................................................14
6 Maintenance...............................................................................................................18
Deutsch
1 Sicherheitsbestimmungen ..........................................................................................20
2 Cenelec-Richtlinien.....................................................................................................22
3 Produktbeschreibung..................................................................................................23
4 Betrieb........................................................................................................................26
5 Spezifikationen ...........................................................................................................31
6 Wartung......................................................................................................................35
3
MD 9016 Digital Multimeter Series Safety
0B1 Safety
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.
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 protection rating, against the users, is double insulation per IEC61010-1 2nd
Ed., EN61010-1 2nd Ed., UL61010-1 2nd Ed. and CAN/CSA C22.2 No. 61010.1-0.92 to
Category II 1000V, CAT III 600V and CAT IV 300V AC & DC.
Terminals (to COM) measurement category:
V : Category II 1000V, CAT III 600V and CAT IV 300V AC & DC.
mAA : Category III 500Vac and 300Vdc.
A : Category III 600Vac and 300Vdc.
Per IEC61010-1 2nd Ed. (2001) Measurement Category
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.
Measurement Category III (CAT III) is for measurements performed in the building
installation. Examples are measurements on distribution boards, circuit- breakers, wiring,
including cables, bus-bars, junction boxes, switches, socket-outlets in the fixed
installation, and equipment for industrial use and some other equipment, for example,
stationary motors with permanent connection to the fixed installation.
Measurement Category II (CAT II) is for measurements performed on circuits directly
connected to the low voltage installation. Examples are measurements on household
appliances, portable tools and similar equipment.
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MD 9016 Digital Multimeter Series Safety
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 current that exceeds
the current rating of the protection fuse. Do not attempt a current measurement to any
circuit where the open circuit voltage is above the protection fuse voltage rating.
Suspected open circuit voltage should 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.
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
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MD 9016 Digital Multimeter Series Cenelec Directives
2 Cenelec Directives
The instruments conform to CENELEC Low-voltage directive 2006/95/EC and
Electromagnetic compatibility directive 2004/108/EC
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MD 9016 Digital Multimeter Series Product Description
1B3 Product Description
This user's manual uses only representative model(s) for illustrations. Please refer
specification details for function availability to each model.
1) 3-5/6 digits 6000 counts LCD
display
2) Push-buttons for special
functions & features
3) Selector to turn the Power On
or Off and Select a function
4) Input Jack for milli-amp and
micro-amp current functions
5) Input Jack for all functions
EXCEPT current (A, mA, A)
JACK
functions
JACK
6) Common (Ground reference)
Input Jack for all functions
!
7) Input Jack for 8A (15A for
30sec) current function
Analog bar-graph
The analog bar graph provides a visual indication of measurement like a traditional
analog meter needle. It is excellent in detecting faulty contacts, identifying potentiometer
clicks, and indicating signal spikes during adjustments.
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MD 9016 Digital Multimeter Series Product Description
Average sensing RMS calibrated
RMS (Root-Mean-Square) is the term used to describe the effective or equivalent DC
value of an AC signal. Most digital multimeters use average sensing RMS calibrated
technique to measure RMS values of AC signals. This technique is to obtain the
average value by rectifying and filtering the AC signal. The average value is then scaled
upward (calibrated) to read the RMS value of a sine wave. In measuring pure sinusoidal
waveform, this technique is fast, accurate and cost effective. In measuring nonsinusoidal waveforms, however, significant errors can be introduced because of
different scaling factors relating average to RMS values.
True RMS
True RMS is a term which identifies a DMM that responds accurately to the effective
RMS value regardless of the waveforms such as: square, sawtooth, triangle, pulse
trains, spikes, as well as distorted waveforms with the presence of harmonics.
Harmonics may cause :
1) Overheated transformers, generators and motors to burn out faster than normal
2) Circuit breakers to trip prematurely
3) Fuses to blow
4) Neutrals to overheat due to the triplen harmonics present on the neutral
5) Bus bars and electrical panels to vibrate
Crest Factor
Crest Factor is the ratio of the Crest (instantaneous peak) value to the True RMS value,
and is commonly used to define the dynamic range of a True RMS DMM. A pure
sinusoidal waveform has a Crest Factor of 1.4. A badly distorted sinusoidal waveform
normally has a much higher Crest Factor.
NMRR (Normal Mode Rejection Ratio)
NMRR is the DMM's ability to reject unwanted AC noise effect that can cause
inaccurate DC measurements. NMRR is typically specified in terms of dB (decibel). This
series has a NMRR specification of >60dB at 50 and 60Hz, which means a good ability
to reject the effect of AC noise in DC measurements.
CMRR (Common Mode Rejection Ratio)
Common mode voltage is voltage present on both the COM and VOLTAGE input
terminals of a DMM, with respect to ground. CMRR is the DMM's ability to reject
common mode voltage effect that can cause digit rolling or offset in voltage
measurements. This series has a CMRR specifications of >60dB at DC to 60Hz in ACV
function; and >100dB at DC, 50 and 60Hz in DCV function. If neither NMRR nor CMRR
specification is specified, a DMM's performance will be uncertain.
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MD 9016 Digital Multimeter Series Operation
A
2B4 Operation
DCV, ACV, & Line Frequency functions
Press the Hz push-button for one second or more to activate or to exit Hz.
DCV
CV
Hz
JACK
JACK
!
JACK
JACK
JACK
JACK
!
!
Note:
*Input sensitivity varies automatically with function range selected before activating the
Hz function. 6V function range has the highest and the 1000V range has the lowest. It is
recommended to first measure the signal voltage (or current) level then activate the Hz
function in that voltage (or current) range to automatically set the most appropriate
trigger level. You can also press the RANGE button momentarily to select another
trigger level manually. If the Hz reading becomes unstable, select lower sensitivity to
avoid electrical noise. If the reading shows zero, select higher sensitivity.
*Number of Bar-graph pointer is used to indicate input range (sensitivity) selected.
1/2/3/4 pointers indicate 6/60/600/1000V, 6/10/-/-A, 60/600/-/-mA or 600/6000/-/-uA is
selected in corresponding V, A, mA or uA function respectively. ( “-” means range not
available)
*The Hz of mV function is designed specially for logic level (3V or 5V family) frequency
measurement.
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MD 9016 Digital Multimeter Series Operation
Resistance, Continuity, Capacitance, & Diode test functions
Press the
selection will be saved as power up default for repeat measurement convenience.
CAUTION
Discharge capacitors before making any measurement. Large value capacitors should
be discharged through an appropriate resistance load.
SELECT
button momentarily to select the subject functions in sequence. Last
CAUTION
Using resistance and continuity 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 reading
Continuity function is convenient for checking wiring connections and operation of
switches. A continuous beep tone indicates a complete wire.
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).
DCmV, ACmV, Temperature oC & oF functions
Press the
selection will be saved as power up default for repeat measurement convenience.
SELECT
button momentarily to select the subject functions in sequence. Last
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MD 9016 Digital Multimeter Series Operation
Note: Be sure to insert the banana plug K-type temperature bead probe AMD 9023 with
correct polarities. You can also use a plug adapter AMD 9024 (Optional
purchase) with banana pins to K-type socket to adapt other standard K type mini plug
temperature probes.
A, mA, and A Current functions
Press
saved as power up default for repeat measurement convenience.
SELECT
button momentarily to toggle between DC and AC. Last selection will be
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MD 9016 Digital Multimeter Series Operation
*Note: 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).
Electric Field EF-Detection
At Volt or Current function, press the EF button for one second or more and release to
toggle to EF-Detection feature. The meter displays “E.F.” when it is ready. Signal
strength is indicated as a series of bar-graph segments on the display plus variable
beep tones.
Non-Contact EF-Detection:
which detects electric field surrounds current-carrying conductors. It is ideal for tracing
live wiring connections, locating wiring breakage and to distinguish between live or earth
connections.
Probe-Contact EF-Detection:
distinguishing between live and ground connections, use the Red (+) test probe for
direct contact measurements.
PC computer interface capabilities
The instrument equips with an optical isolated interface port at the meter back for data
communication. Press HOLD button while turning the meter on to enable meter PCCOMM output. Optional purchase PC interface kit AMD 9025 is required to connect the
meter to the PC computer RS232 or USB ports.
Hold
The hold feature freezes the display for later view. Press the
momentarily to toggle the hold feature.
An antenna is located along the top-right end of the meter,
For more precise indication of live wires, such as
HOLD
button
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