Amprobe DM7C Bedienungsanleitung

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

FAX 781.665.0780 - TestEquipmentDepot.com

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

Battery Test................................................................................6

Diode Test..................................................................................7

Current Measurement ..............................................................7

Current Measurement 200 mA ..................................................8

Changing the batteries ..........................................................................8

Fuse replacement..................................................................................9

Maintenance ........................................................................................9

Cleaning ....................................................................................9

Calibration Interval ....................................................................9

Specifications ......................................................................................10

Warranty ..........................................................................................11

Repair ..........................................................................................12

DM7C Multimeter

Users Manual

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

FAX 781.665.0780 - TestEquipmentDepot.com

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 Multimeter DM7C is a universal, multi-purpose electrical measuring in-

strument. It comply with the standards DIN VDE 0411 and EN 61010, and p r o v i d e

safe, reliable operation. The multimeter is a valuable tool for all sorts of measurements

in both trade and industry.

• 3 1/2 digit LC Display, max. 1999 digits

• manual measurement range selection

• AC and DC voltage measurement up to 600 V

• DC Current measurement up to 200 mA

• Resistance measurement up to 2 MOhm

• Diode test

• Battery test for 1.5 V and 9 V batteries

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 instru-

ment complies with the valid di-

rectives. 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 elec-

trical and electronic equipment

(WEEE Directive 2002/96/EC).

Contents

1 pc. Amprobe Multimeter DM7C

1 pc. Holster

2 pcs. Test Leads (1ea. red, 1ea. black)

1 pc. Battery 9 V IEC 6F22 or 6LR61

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.

• Inordertoavoidinstrument damage, it is advised to remove batteries whennotusing

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 Amprobe multimeter DM7C 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 volt-

ages 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 un-

damaged.

• Onlyhandle testleadsand probeson thegripsprovided.Avoidtouchingprobesunder

any circumstances.

• Measurements in dangerous proximity of electrical installations are only to be exe-

cuted 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.

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 tech-

nical 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 en-

sured.

• 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 200 mA

Operation

Measurements in dangerous proximity of electrical systems are only to be carried

out in compliance with the instructions of a responsible electronics technician,

and never alone.

Test leads and test probes may only be touched at handle surfaces provided. Ab-

solutely avoid the direct contact of the test probes. Prior to switching to a new

measurement range or a new type of measurement, remove all connections from

UUT.

Measurements have to be carried out by respecting the standards.

Voltage Measurement

To avoid electrical shock, the valid safety measures and VDE directives strictly

have 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 (2V, 20V, 200V or 600V) 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.

If display shows ”1” on the left, change selection to next highest voltage range.

AC Voltage Measurement

1) Select measurement range (200V or 600V) 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.

If display shows ”1” on the left,, change selection to next highest voltage range.

Resistance Measurement

Prior to any resistance measurement it has to be ensured that the resistor to be

tested does not have voltage across it. Failure to comply with this prescription can

lead to dangerous user injuries or cause instrument damage. Addition-

ally, foreign voltages falsify the measurement result.

1) Select measurement range (2000!, 20k!, 200 k!or 2 M!) 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.

If display shows ”1” on the left, change selection to next highest resis.-range.

Battery Test

1) Select measurement range 9V or 1.5V via measurement function selection switch

2) Connect the black test lead to the COM socket and the red test lead to the

BATTERY TEST socket.

3) Connect test leads to UUT/Battery.

4) Read the measurement result displayed on the screen.

Diode Test

Prior to any diode test, it must be ensured, that the diode to be tested does not

have voltage across it. Failure to comply with this prescription can lead to dan-

gerous user injuries or cause instrument damage. Additionally, foreign

voltages falsify the measurement result.

Resistors and semiconductor paths in parallel to the diode cause falsified meas-

urement 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 con-

nection has to be ensured.

After instrument fuse tripping eliminate the cause for the tripping prior to fuse re-

placement.

Current Measurement 200 mA

1) Position measurement function selection switch to 200m measurement range.

2) Connect the black test lead to the COM socket and the red test lead to the 200mA

socket.

3) Connect test leads to UUT.

4) Read the measurement result displayed on the screen.

Changing the batteries

Prior to battery replacement, disconnect the instrument from any circuits.

Only use batteries as described in the specifications.

If the symbol for Low-battery appears in the upper left corner of the display, the

battery must be changed.

This is carried out as follows:

1) SeparatetheAmprobemultimeter DM7C from any circuit,andremovethe test leads.

2) Switch the instrument off

3) Open the housing by removing the 4 screws on the rear face.

4) Remove the old battery.

5) Insert a new battery (type 1 x 9 V IEC 6F22 or 6LR61), taking care that the polarity

is correct. Make sure that no wires are trapped between the 2 halves of the housing,

and close it again.

6) The instrument is now ready for further use.

Please consider your environment when you dispose of. They belong in a dispos-

al area for hazardous waste.

Please, comply with the respective valid regulation regarding the return,

recycling and disposal of used batteries.

If an instrument is not used over an extended time period, the batteries must be

removed. Should the instrument be contaminated by leaking battery cells, the in-

strument has to be returned for cleaning and inspection to the factory.

Fuse replacement

Prior to fuse replacement, disconnect the instrument from any circuits.

Only use fuses of voltage and current values as described in the specifications.

Using auxiliary fuses, in particular short-circuiting fuse holders is prohibited and

can cause instrument destruction or serious bodily injury of operator.

1) SeparatetheAmprobemultimeter DM7C from any circuit,andremovethe test leads.

2) Switch the instrument off and remove the holster.

3) Open the housing by removing the 4 screws on the rear face.

4) Remove the defective fuse

5) Insert a new fuse. Make sure that no wires are trapped between the 2 halves of the

housing, and close it again.

6) The instrument is now ready for further use.

Maintenance

Provided it is used in accordance with the users manual, the instrument needs no spe-

cial maintenance.

Cleaning

If the instrument is dirty after daily usage, it is advised to clean it by using a damp

cloth and a mild household detergent.

Prior to cleaning, ensure that instrument is switched off and disconnected from

external voltage supply and any other instruments connected (such as UUT, con-

trol instruments, etc.).

Never use acid detergents or dissolvants for cleaning.

Calibration Interval

We suggest a calibration interval of one year. If the instrument is used very often or if

it is used under rough conditions we recommend shorter intervals. If the instrument

is used only a few times a year, the calibration interval can be extended to 3 years.

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