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

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.

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.

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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

DM9C

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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.

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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.!

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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.

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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.

DM9C

2526044_Rev2_dm9c.qxd 10/26/06 9:50 AM Page 8

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