Metrel MD 9060 User guide [ml]

METREL MD 9060

TRMS, 500.000 counts LCD, 100 kHz Voltage

Bandwidth Heavy Duty Industrial Multimeter

MD 9060

User Manual

Bedienungsanleitung

Version 1.0, Code no. 20 752 000

Distributor:

METREL d.d.

Ljubljanska cesta 77
1354 Horjul
Slovenia
e-mail: [e-mail]
web site: http://www.metrel.si/

Metrel GmbH

Mess und Prüftechnik
Orchideenstrasse 24
90542 Eckental -Brand
Germany
E-mail: [e-mail]
Internet: http://www.metrel.de/

Metrel UK

Test & Measurement
Unit 1, Hopton House,
Ripley Drive,
Normanton Industrial Estate,
Normanton,
West Yorkshire
WF6 1QT
Great Britain
E-mail: [e-mail]
Internet: http://www.metrel.co.uk/

© 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.

2

MD 9060 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..............................................................................................................18

6 Maintenance...............................................................................................................24

Deutsch

1.Sicherheitsbestimmungen ..........................................................................................26

2 Cenelec-Richtlinien.....................................................................................................28

3 Produktbeschreibung..................................................................................................29

4 Betrieb........................................................................................................................31

5 Spezifikationen ...........................................................................................................40

6 Wartung......................................................................................................................46

3

MD 9060 Digital Multimeter Series Safety

1 Safety

Terms in this manual

WARNING
CAUTION

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 IV 1000 Volts AC & DC.

MD 9060 Terminals (to COM) measurement category:

V / mAA / A : Category IV 1000 Volts AC & DC

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.

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.

identifies conditions and actions that could result in serious injury or even

death to the user.
identifies conditions and actions that could cause damage or malfunction
in the instrument.

4

MD 9060 Digital Multimeter Series Safety

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

5

MD 9060 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

6

MD 9060 Digital Multimeter Series Product Description

3 Product Description

This user's manual uses only representative model(s) for illustrations. Please refer
specification details for function availability to each model.

1) 5-4/5 digits 500000
counts dual displays

2) Push-buttons for special
functions & features

3) Selector to turn the
Power On or Off and Select
a function

4) Input Jack for 10A (20A
for 30sec) current, and for
T2 (-) functions

5) Common (Ground
reference) Input Jack for all
functions

function

6) Input Jack for all
functions EXCEPT current
(A, mA, A) and T2
functions

7) Input Jack for milli-amp,
micro-amp and T2 (+)
functions

EXCEPT T2

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

7

MD 9060 Digital Multimeter Series Product Description

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.

AC True RMS

AC True RMS, normally refers as True RMS, identifies a DMM function that is AC
coupled, and responds accurately only to the effective RMS AC component value
regardless of the waveforms. However, DC component plays an important role in the
distorted non-symmetrical waveforms, and will also be of interest sometimes.

DC+AC True RMS

DC+AC True RMS calculates both of the AC and DC components given by the
expression when making measurements, and can responds

accurately to the total effective RMS value regardless of the waveform. Distorted
waveforms with the presence of DC components and 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

AC-Bandwidth

AC-bandwidth of a DMM is the range of frequencies over which AC measurements can
be made within the specified accuracy. It is not the frequency measurement function,
but is the frequency response of the AC functions. A DMM cannot accurately measure
the AC value with frequency spectrums fall beyond the AC-bandwidth of the DMM.
Therefore, wide AC-bandwidth plays an important role in high performance DMMs. In
reality, complex waveforms, noise and distorted waveforms contain much higher
frequency spectrum than its fundamental.

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.

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MD 9060 Digital Multimeter Series Operation

4 Operation

CAUTION

Before and after hazardous voltage measurements, test the voltage function on a
known source such as line voltage to determine proper meter functioning.

VFD ACV

Press the
selection will be saved as power up default for repeat measurement convenience. By
default, voltage is always set at manual-range 500V to best cope with most Variable
Frequency Drives (VFD) measurements. Press the
select other ranges only when needed. High noise-rejection frequency measurement
algorithm and Low-pass filter circuit are permanently bundled with all the voltage and
frequency function-ranges within this rotary-switch position.

+Hz

, VFD Hz

SELECT

+ACV

functions

button momentarily to toggle between the subject functions. Last

RANGE

button momentarily to

Note: Hz Input sensitivity varies automatically with voltage (current function alike) range
selected. 5V range has the highest and the 1000V range has the lowest. This VFD
function defaults at the most appropriate trigger level for Variable Frequency Drive
measurements. You can also press the

RANGE

button momentarily to select another
trigger level (voltage range) manually. If the Hz reading becomes unstable, select higher
voltage range to avoid electrical noise. If the reading shows zero, select lower voltage
range for better sensitivity.

+Hz

dBm

Press the

+ACV

, Hz

SELECT

, ACV

+Hz

functions

button momentarily to select the subject functions in sequence. Last

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MD 9060 Digital Multimeter Series Operation

selection will be saved as power up default for repeat measurement convenience.

Note: Hz Input sensitivity varies automatically with voltage (current function alike) range
selected. 5V range has the highest and the 1000V range has the lowest. Auto-ranging
measurements normally set the most appropriate trigger level. You can also press the

RANGE

button momentarily to select another trigger level (voltage range) manually. If
the Hz reading becomes unstable, select higher voltage range to avoid electrical noise.
If the reading shows zero, select lower voltage range for better sensitivity.

Note: In

dBm

second before displaying the dBm readings. Press

+Hz

function, power up default reference impedance will be displayed for 1

dBm-

 (

RANGE

) button momentary

to select different reference impedance of 4, 8, 16, 32, 50, 75, 93, 110, 125, 135, 150,
200, 250, 300, 500, 600, 800, 900, 1000, up to 1200. Last selection will be saved as

power up default for repeat measurement convenience. Manual trigger level selection
on Hz reading is not available in this function.

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MD 9060 Digital Multimeter Series Operation

DCV, DCV

Press the

+ACV

, DC+ACV

SELECT

button momentarily to select the subject functions in sequence. Last

+ACV

functions

selection will be saved as power up default for repeat measurement convenience.

DCmV, DCmV

Press the

SELECT

+ACmV

, DC+ACmV

button momentarily to select the subject functions in sequence. Last

+ACmV

, Logic-Level Hz, Duty% functions

selection will be saved as power up default for repeat measurement convenience.

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MD 9060 Digital Multimeter Series Operation

ACmV

+Hz

Press the

, dBm
SELECT

+Hz

, Hz

+ACmV

functions

button momentarily to select the subject functions in sequence. Last

selection will be saved as power up default for repeat measurement convenience.

Temperature functions

Press
(

RANGE

SELECT

) button momentarily can select T1, T2,

button momentarily to toggle between C and F readings. Press

T1

+T2

or

T1-T2

+T2

readings. Last

T1-T2

selection will be saved as power up default for repeat measurement convenience.

Note: Be sure to insert the banana plug type-K temperature bead probe AMD 9023 with
correct polarities. You can also use a plug adapter AMD 9024 (Optional

purchase) with banana pins to type-K socket to adapt other standard type-K mini plug
temperature probes.

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MD 9060 Digital Multimeter Series Operation

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.

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).

SELECT

button momentarily to toggle between the subject functions. Last

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MD 9060 Digital Multimeter Series Operation



Resistance, Continuity, nS Conductance functions

Press the

SELECT

button momentarily to select the subject functions in sequence. Last

selection will be saved as power up default for repeat measurement convenience.

Note:
Conductance is the inverse of Resistance, that is S=1/ or nS=1/G. It virtually extends

the Resistance measurements to the order of Giga-Ohms for leakage measurements.

Continuity function is convenient for checking wiring connections and operation of

switches. A continuous beep tone indicates a complete wire.

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



A, mA (DCmA with %4-20mA) and A Current functions

Press

SELECT

button momentarily to select DC,

DC

+AC

,

DC+AC

+AC

and

AC

+Hz

Last

.

selection will be saved as power up default for repeat measurement convenience.
In DC mA function, neither in AC nor DC+AC selection, loop-current percentage (

20mA

) reading is displayed simultaneously. It is set at 4mA = 0% (zero) and 20mA =

%4-

100% (span) with 0.01% high resolution for testing and monitoring externally powered
loop current in industrial process control applications.

*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).

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MD 9060 Digital Multimeter Series Operation

15