Draper Digital Multimeter Manual de usuario

INSTRUCTIONS FOR

Digital

Multimeter

Stock No.52320 Part No.DMM7

This manual has been compiled by Draper Tools and is an integrated part of the product with which it is enclosed and

should be kept with it for future references.

This manual describes the purpose for which the product has been designed and contains all the necessary information

to ensure its correct and safe use. We recommend that this manual is read before any operation or, before performing

any kind of adjustment to the product and prior to any maintenance tasks. By following all the general safety instructions

contained in this manual, it will ensure both product and operator safety, together with longer life of the product itself.

All photographs and drawings in this manual are supplied by Draper Tools to help illustrate the operation of the product.

Whilst every effort has been made to ensure accuracy of information contained in this manual, the Draper Tools policy of

continuous improvement determines the right to make modifications without prior warning.

IMPORTANT: PLEASE READ THESE INSTRUCTIONS CAREFULLY TO ENSURE THE SAFE AND

EFFECTIVE USE OF THIS PRODUCT.

GENERAL INFORMATION

01/2005

DECLARATION OF CONFORMITY

CONTENTS

Contents/Declaration .................................................................................................................................. 1

Specification ............................................................................................................................................... 2

Guarantee ................................................................................................................................................. 3

Getting to Know Your Multimeter ............................................................................................................. 4-5

Assembly .................................................................................................................................................... 5

Operation and Use ...................................................................................................................................... 6

Maintenance .............................................................................................................................................. 7

We :

Draper Tools Ltd.,

Hursley Road,

Chandler’s Ford,

Eastleigh, Hampshire.

SO53 1YF.

England.

Declare under our sole responsibility that the product:

Stock No:- 52320.

Part No:- DMM7.

Description:- Digital Multimeter.

To which this declaration relates is in conformity with the following directive(s) 73/23/EEC, 93/68/EEC &

89/366/EEC.

With reference to: EN61010-1, EN61010-2-31, EN50081-1

& EN50082-1.

J.N. Draper

Managing Director 06/08/1997

- 1 -

- 2 -

SPECIFICATION

The Draper Tools policy of continuous improvement determines the right to change specification

without notice.

Stock No. ......................................................................................................................... 52320

Part No. ........................................................................................................................... DMM7

Battery type ..................................................................................................................... 1x12V

Dimension .......................................................................................................... 55x112x40mm

Weight ................................................................................................................................. 70g

- RESISTANCE

Accuracy

+/- 1.5% rdg +/- 4 dgts

Range

200

2000

20k

200k

2000k

reading = accuracy of the measurement circuit

digits = accuracy of the analogue to digital conversion

WARNING: Ensure the test leads are fully engaged prior to carrying out any measurements, to

avoid an electric shock.

- DC CURRENT Overload protection: 200mA/250V fuse.

Accuracy

+/- 2.0% rdg +/- 4 dgts

Range

2000µA

20mA

200mA

- AC VOLTAGE Input impedance: 450K , Input protection: 500V RMS,

Frequency Range: 40Hz-400Hz.

Accuracy

+/- 2.0% rdg +/- 5 dgts

Range

200V

500V

- DIODE CHECK Test Current: 1.6mA typical.

Accuracy

Range

3.2V DC Typical

- 3 -

GUARANTEE

Draper Tools have been carefully tested and inspected before shipment and are guaranteed to be

free from defective materials and workmanship for a period of 12 months from the date of

purchase except where tools are hired out when the guarantee period is ninety days from the

date of purchase.

Should the machine develop any fault, please return the complete tool to your nearest

authorized warranty repair agent or contact Draper Tools Limited, Chandler's Ford, Eastleigh,

Hampshire, SO53 1YF. England. Telephone: (023) 8026 6355.

If upon inspection it is found that the fault occurring is due to defective materials or

workmanship, repairs will be carried out free of charge. This guarantee does not apply to normal

wear and tear, nor does it cover any damage caused by misuse, careless or unsafe handling,

alterations, accident, or repairs attempted or made by any personnel other than the authorised

Draper warranty repair agent.

This guarantee applies in lieu of any other guarantee expressed or implied and variations of its

terms are not authorised.

Your Draper guarantee is not effective unless you can produce upon request a dated receipt or

invoice to verify your proof of purchase within the 12 month period.

Please note that this guarantee is an additional benefit and does not affect your statutory rights.

Draper Tools Limited.

- 4 -

GETTING TO KNOW YOUR MULTIMETER

(1) Function Selector.

(2) Power Switch.

(3) L.C.D. Screen.

(4) Probes.

(5) V, , mA (Voltage, Resistance, Amperage)

Jack Socket.

(6) Common Earth Jack Socket.

- UNPACKING: After removing the packing material, make sure the product is in perfect

condition and that there are no visible damaged parts. If in doubt, do not use the digital

multimeter and contact the dealer from whom it was purchased.

The packaging materials (plastic bags, polystyrene, etc.), must be disposed of in an

appropriate refuse collection container. These materials must not be left within the reach of

children as they are potential sources of danger.

(4)

(3)

(6)(5)

(1)

(2)

- 5 -

GETTING TO KNOW YOUR MULTIMETER

-OTHER METER MARKINGS

ASSEMBLY

Remove the rubber case. Turn the meter over and remove the screws holding the housing

together. Carefully part the front and back housing of the meter. Do not touch any of the internal

components. Insert the appropriate battery taking note of the polarity. Close the housing (do not

force) and resecure. The internal fuse can be replaced in the same manner.

To ensure an accurate reading, ensure the test probe are fully engaged.

Diode check.

Indicates that the meter battery voltage has dropped excessively.

Units of measuring current (AMPS).

Units of measuring voltage (VOLTS).

Units of measuring resistance (OHMS).

Caution.

Risk of electric shock.

10A

mA µA

- 6 -

FIG.1

OPERATION AND USE

-WARNINGS: Each time before you use this analyser, inspect the test leads, connectors and

probes for damage, e.g. cracks or breaks in the insulation. Any defective leads should be

replaced immediately. If the value to be measured is not known, set the selector switch to the

highest range and reduce until a satisfactory reading is obtained.

- VOLTAGE MEASUREMENT:

1. Connect the red test lead to the ‘V/ /mA’ jack socket and the black lead to the ‘com’ jack

socket Ensure the leads are correctly plugged in.

2. Position the selector switch to the desired voltage range and switch the meter ‘ON’.

3. Connect the test leads to the circuit to be measured.

4. Turn on the power to the circuit to be measured, the voltage value should appear on the

digital display along with the voltage polarity (if reversed only).

-CURRENT MEASUREMENT (Fig.1.):

1. Connect the red test lead to the ‘V/ /mA’ jack socket and the black lead to the ‘com’ jack

socket (max 10A).

2. Position the selector switch to the desired amp range and switch the meter ‘ON’.

3. Open the circuit to be measured, and connect the test leads in series to bridge the gap.

4. Turn on the power to the circuit to be measured, the ‘current’ value should appear on the

digital display.

- RESISTANCE MEASUREMENT:

-WARNING: If the resistance to be measured is part of a circuit, turn off and disconnect the

power and discharge all capacitors before measurement

1. Connect the red test lead to the ‘V/ /mA’ jack socket and the black lead to the ‘com’

jack socket.

2. Position the selector switch to

the desired ohm range and

switch the meter ‘ON’.

3. Connect the test leads to the

circuit to be measured.

4. The resistance value should now

appear on the digital display.

- 7 -

MAINTENANCE

The fuse rarely needs replacing, and almost always a blown fuse is the result of an operator error.

-WARNING: If the resistance to be measured is part of a circuit, turn off and disconnect the

power and discharge all capacitors before measurement

If the meter battery is in need of replacement (see Assembly section) the ‘ ’ symbol will appear

on the display.

- 8 -

NOTES

- 9 -

NOTES

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