Amprobe DM9C Manual de usuario
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Contents
Introduction..........................................................................................2
Contents ..........................................................................................3
Transport and Storage ..........................................................................3
Safety ........................................................................................3
Appropriate Usage ....................................................................4
Feature Diagram ..................................................................................4
Operation ..........................................................................................5
Voltage Measurement ................................................................5
DC Voltage Measurement ..........................................................5
AC Voltage Measurement ..........................................................5
Resistance Measurement ..........................................................6
Continuity Test ..........................................................................6
Diode Test..................................................................................7
Current Measurement................................................................7
Current Measurement 400 mA ..................................................8
Current Measurement 10 A........................................................8
Changing the batteries ..........................................................................9
Fuse replacement..................................................................................9
Maintenance ........................................................................................10
Cleaning ....................................................................................10
Calibration Interval ....................................................................10
Specifications ......................................................................................10
Warranty ..........................................................................................13
Repair ..........................................................................................13
1
DM9C Multimeter
Users Manual
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References marked on instrument or in users manual
The users manual contains information and references, necessary for safe
operation and maintenance of the instrument. Prior to using the instrument the
user is kindly requested to thoroughly read the users manual and comply with it
in all sections. Failure to read the users manual or to comply with the warnings
and references contained herein can result in serious bodily injury or instrument
damage
Introduction
The Amprobe DM9C is a universal, multi-purpose electrical measuring instrument. It
complies with the standards DIN VDE 0411 and EN 61010, and provide safe, reliable
operation. The DM9C multimeter is a valuable tool for all sorts of measurements in both
trade and industry.
• Digital Multimeter with extra large display
• 3 3/4 LC-Display with 4000 digits
• Safety according to DIN VDE 0411, EN 61010, IEC 61010, CAT II/600 V
• Voltage-, Current- and Resistance Measurement
• Diode- and Continuity Test
• Autoranging
• Rubber holster for impact protection
After unpacking, check that the instrument is complete, and that all accessories are
present.
2
Warning of a potential danger,
comply with users manual. Equipment protected
throughout by double
insulation or reinforced
insulation.
Caution! Dangerous voltage.
Danger of electrical shock.
Canadian Standards Association.
Conformity symbol, the
instrument complies with the
valid directives. It complies
with the EMC Directive
(89/336/EEC) and the Low
Voltage Directive (73/23/EEC)
with their valid standards.
Reference. Please use utmost
attention.
Symbol for the marking of
electrical and electronic
equipment (WEEE Directive
2002/96/EC).
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Contents
1 pc. Amprobe DM9C
1 pc. Holster
2 pcs. Test Leads (1ea. red, 1ea. black)
2 pc. Batteries 1.5V, IEC R03
1 pc. Users Manual
Transport and Storage
• Please keep the original packaging for later transport, e.g. for calibration. Any
transport damage due to faulty packaging will be excluded from warranty claims.
• In order to avoid instrument damage, it is advised to remove batteries when not using
the instrument over a certain time period. However, should the instrument be
contaminated by leaking battery cells, you are kindly requested to return it to the
factory for cleaning and inspection.
• Instruments must be stored in dry and closed areas. In the case of an instrument
being transported in extreme temperatures, a recovery time of minimum 2 hours is
required prior to instrument operation.
Safety
• The multimeter has been manufactured and tested to comply with the safety
regulations for electronic measuring equipment contained in IEC61010 and EN
61010, and left the factory in a safe condition. To maintain this condition, the user
must observe the safety instructions contained in this users manual.
• To avoid electric shock, safety measures must be observed when working with
voltages higher than 120 V (60 V) DC or 50 V (25 V) RMS AC. These are the
values of threshold contact voltages given by DIN VDE.
• Before each measurement make sure that the test leads and the instrument are
undamaged.
• Onlyhandletestleadsandprobesonthegripsprovided.Avoidtouching probes under
any circumstances.
• Measurements in dangerous proximity of electrical installations are only to be
executed when instructed by a responsible electrical specialist, and never alone.
• The relevant safety regulations for electrical plant and equipment must be
observed during all operations.
• The instrument must only be used in the specified ranges.
• Before opening the instrument, it must be disconnected from all circuits.
• Protect the instrument from prolonged exposure to direct sunlight.
3
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Appropriate Usage
• The instrument may only be used under those conditions and for those purposes for
which it was conceived. For this reason, in particular the safety references, the
technical data including environmental conditions and the usage in dry environments
must be followed.
• When modifying or changing the instrument, the operational safety is no longer
ensured.
• The instrument may only be opened by an authorised service technician, e.g. for fuse
replacement.
Feature Diagram
1. LCD
2. Measurement function selection switch
3. Input socket for measurement ranges
4. Ground connection for all measurement ranges
5. Input socket for current measurement range 10 A
4
DM9C
1
2
3
4
5
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Operation
Measurements in dangerous proximity of electrical systems are only to be carried
outincompliancewiththeinstructionsofaresponsibleelectronicstechnician,and
never alone.
Test leads and test probes may only be touched at handle surfaces provided. Avoid
the direct contact of the test probes. Prior to switching to a new measurement
rangeoranewtypeofmeasurement,removeall connections from UUT (unit under
test).
Measurements have to be carried out by respecting the standards.
Voltage Measurement
Toavoidelectrical shock, the valid safety measures and VDEdirectivesstrictlyhave
to be met concerning excessive contact voltage when working with voltages
exceeding 120V (60V) DC or 50V (25V)rms AC.
DC Voltage Measurement
1) Select measurement range V via measurement function selection switch.
2) Connect the black test lead to the COM socket and the red test lead to the
socket.
3) Connect test leads to UUT.
4) Read the measurement result displayed on the screen.
AC Voltage Measurement
1) Select measurement range V via measurement function selection switch.
2) Connect the black test lead to the COM socket and the red test lead to
the socket.
3) Connect test leads to UUT.
4) Read the measurement result displayed on the screen.
5
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Resistance Measurement
Prior to any resistance measurement it has to be ensured that the resistor to be
tested does not have live voltage across it. Failure to comply with this
prescription can lead to dangerous user injuries or cause instrument damage.
Additionally, foreign voltages falsify the measurement result.
1) Select measurement range via measurement function selection switch.
2) Connect the black test lead to the COM socket and the red test lead to
the socket.
3) Connect the test leads to UUT.
4) Read the measurement result displayed on the screen.
Continuity Test
Prior to any continuity test, it must be ensured that the resistance to be measured
does not have live voltage across it.. Failure to comply with this prescription can
lead to dangerous user injuries or cause instrument damage. Additionally, foreign
voltages falsify the measurement result.
1) Position measurement function selection switch to measurement range.
2) Connect the black test lead to the COM socket and the red test lead to
the socket.
3) Connect test leads to UUT.
4) Read the measurement result displayed on the screen.
Acoustic beeper will sound if resistance is less than approx. 60 ohms.!
6
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Diode Test
Prior to any diode test, it must be ensured, that the diode to be tested does not
have live voltage across it. Failure to comply with this prescription can lead to
dangerous user injuries or cause instrument damage. Additionally, foreign
voltages falsify the measurement result.
Resistors and semiconductor paths in parallel to the diode cause falsified
measurement results.
1) Position measurement function selection switch to measurement range.
2) Connect the black test lead to the COM socket and the red test lead to
the socket.
3) Connect test leads to UUT.
4) Read the measurement result displayed on the screen.
Current Measurement
Ensure that the measurement circuit is not live when connecting the
measurement instrument.
The instruments may only be used in current circuits protected at 16 A up to a
nominal voltage of 600 V.
The nominal cross section of connecting line has to be respected and a safe
connection has to be ensured.
After instrument fuse tripping eliminate the cause for the tripping prior to fuse
replacement.
7
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Current Measurement 400 mA
1) Position measurement function selection switch to mA or
mA measurement range.
2) Connect the black test lead to the COM socket and the red test lead to
the socket..
3) Connect test leads (in series) to UUT.
4) Read the measurement result displayed on the screen.
If display shows ”1” on the left, change selection to 10A range.
Current Measurement 10 A
1) Position measurement function selection switch to A or
A measurement range.
2) Connect the black test lead to the COM socket and the red test lead to the 10 A
socket.
3) Connect test leads to UUT.
4) Read the measurement result displayed on the screen.
8
DM9C
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