Draper DMM202 Instruction Booklet

200 SERIES

MULTIMETER

41820

IMPORTANT: Please read these instructions carefully to ensure the safe and effective use of this product and save
these instructions for future reference. 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.

AlI 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.

1. TITLE PAGE 11. DISPOSAL

1.1 INTRODUCTION:

USER MANUAL FOR:

SERIES 200 MULTIMETER

Stock no. 41820.
Part no. DMM202.

1.2 REVISIONS:

Date first published March 2017
Date second published June 2017

As our user manuals are continually updated, users should make sure that they use the
very latest version.

Downloads are available from: http://www.drapertools.com/manuals

DRAPER TOOLS LIMITED WEBSITE: drapertools.com
HURSLEY ROAD PRODUCT HELPLINE: [phone]
CHANDLER’S FORD GENERAL FAX: [phone]
EASTLEIGH
HAMPSHIRE
SO53 1YF
UK

1.3 UNDERSTANDING THIS MANUALS SAFETY CONTENT:

WARNING! Information that draws attention to the risk of injury or death.
CAUTION! Information that draws attention to the risk of damage to the product or

surroundings.

1.4 COPYRIGHT © NOTICE:

Copyright © Draper Tools Limited.
Permission is granted to reproduce this publication for personal & educational use only.
Commercial copying, redistribution, hiring or lending is prohibited.
No part of this publication may be stored in a retrieval system or transmitted in any other
form or means without written permission from Draper Tools Limited.

In all cases this copyright notice must remain intact.

2.1 CONTENTS
Page content

1 TITLE PAGE

1.1 INTRODUCTION ................................................................................................2

1.2 REVISION HISTORY..........................................................................................2

1.3 UNDERSTANDING THIS MANUAL ...................................................................2

1.4 COPYRIGHT NOTICE........................................................................................2

2 CONTENTS

2.1 CONTENTS........................................................................................................3

3 GUARANTEE

3.1 GUARANTEE......................................................................................................4

4 INTRODUCTION

4.1 GENERAL SPECIFICATIONS.........................................................................5-7

4.2 HANDLING & STORAGE....................................................................................8

5 HEALTH & SAFETY INFORMATION

5.1 SAFETY PRECAUTIONS...................................................................................9

6 IDENTIFICATION

6.1 LCD...................................................................................................................11

7 UNPACKING & CHECKING

7.1 PACKAGING.....................................................................................................12

7.2 WHAT´S IN THE BOX?.....................................................................................12

8 OPERATING INSTRUCTIONS

8.1 AUTOMATIC POWER OFF..............................................................................13

8.2 BUZZER............................................................................................................13

8.3 LCD BACKLIGHT DISPLAY .............................................................................13

8.4 DC VOLTAGE (DCV)........................................................................................13

8.5 AC VOLTAGE (ACV) ........................................................................................13

8.6 DC CURRENT ..................................................................................................14

8.7 AC CURRENT ..................................................................................................14

8.8 RESISTANCE (Ω) ............................................................................................. 15

8.9 DIODE TEST.....................................................................................................15

8.10 CONTINUITY TEST..........................................................................................15

8.11 TRANSISTOR hFE TEST.................................................................................15

8.12 CAPACITANCE (C)...........................................................................................16

8.13 FREQUENCY (HZ%)........................................................................................16

8.14 TEMPERATURE MEASUREMENT..................................................................16

8.15 NCV (NON-CONTACT VOLTAGE) MEASUREMENT......................................17

9 EXPLANATION OF SYMBOLS

9.1 EXPLANATION OF SYMBOLS.........................................................................18

10 DISPOSAL

10.1 DISPOSAL ....................................................................................................... 19

DECLARATION OF CONFORMITY............................................................................ ENCLOSED

.............................................................................. Page

318

3. GUARANTEE 8. OPERATING INSTRUCTIONS

3.1 GUARANTEE

Draper tools have been carefully tested and inspected before shipment and are guaranteed to
be free from defective materials and workmanship.
Should the tool develop a fault, please return the complete tool to your nearest distributor
or contact Draper Tools Limited, Chandler's Ford, Eastleigh, Hampshire, SO53 1YF.
England.
Telephone Sales Desk: [phone] or Product Helpline [phone].
A proof of purchase must be provided with the tool.
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 period covering
parts/labour is 12 months from the date of purchase except where tools are hired out when
the guarantee period is 90 days from the date of purchase. This guarantee does not apply
to normal wear and tear, nor does it cover any damage caused by misuse, careless or
unsafe handling, alterations, accidents, or repairs attempted or made by any personnel
other than the authorised Draper warranty repair agent.
Note: If the tool is found not to be within the terms of warranty, repairs and carriage
charges will be quoted and made accordingly.
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 guarantee period.
Please note that this guarantee is an additional benefit and does not affect your statutory
rights.
Draper Tools Limited.

4.1 GENERAL SPECIFICATIONS

Display: LCD display
Maximum display: 5999,3-5/6 digits with automatic polarity display and unit display
Measuring method: double integral A / D conversion
Sampling rate: approx. 3 times per second
Over-range display: "OL"
Working environment: 0 ~ 40 °C, relative humidity <80%
Storage environment: -10 ~ 50 °C, relative humidity <80%
Power supply: 1 X 6F22 9V battery
Volume (size): 143mm × 74mm × 35mm (length × width × height)
Weight: about 176g (including battery)

DC Voltage

Range Accuracy Resolution
600mV 0.1mV
6V ±(0.8%+5d) 1mV
60V 10mV
600V ±(1.0%+5d) 100mV

Input Impedance： 10MΩ。
Overload protection：600VDC or 750VAC voltage peak value

AC Voltage

Range Accuracy Resolution
6V ±(1.2%+5d) 1mV
60V 10mV
600V ±(1.5%+5d) 100mV

Input impedance: 10MΩ.
Overload protection: 600V DC or AC peak.
Frequency response: 40 ~ 1000Hz
Display: Mean response (calibrated to sine wave RMS)
Duty cycle display: (0.1% -99.9%).

516

4. INTRODUCTION

DC Current

Range Accuracy Resolution
600μA 0.1μA
6000μA ±(1.0%+10d) 1μA
60mA 10μA
600mA 100μA
6A ±(2.0%+10d) 1mA
10A 10mA

Maximum input current: 10A (measurement time is ≤ 15 seconds, interval time is 15
minutes)
Overload protection: 0.4A / 250V resettable fuse 10A / 500V fuse

AC Current

Range Accuracy Resolution
600μA 0.1μA
6000μA ±(1.5%+10d) 1μA
60mA 10μA
600mA 100μA
6A ±(2.5%+15d) 1mA
10A 10mA

Note:
Maximum input current: 10A (measurement time is ≤ 15 seconds, interval time is 15
minutes)
Overload protection: 0.4A / 250V resettable fuse
10A / 500V fuse
Frequency response: 40 ~ 1000Hz.
Duty cycle display: (0.1% -99.9%)

Resistance

Range Accuracy Resolution
600Ω ±(1.0%+5d) 0.1Ω
6kΩ 1Ω
60kΩ ±(0.8%+4d) 10Ω
600kΩ 100Ω
6MΩ ±(1.2%+10d) 1kΩ
60MΩ ±(1.8%+15d) 10kΩ

Open circuit voltage: approx. 2.0V.
Overload protection: 250V DC or AC peak

Diode and Continuity Test

Range Displayed value Test Conditions

Diode forward voltage drop. Forward DC current of approx. 2.0mA

The buzzer sounds continuously

when the resistance of the two points

is less than 50Ω and the open circuit

voltage is about 1.0V.

Overload protection: 250V DC or AC peak.
WARNING: For the safety of this range, the input voltage is disabled!

The reverse voltage is approx. 3.0V

Open circuit voltage is about 1.0V.

Transistor hFE Test

Range Description Test Conditions

hFE lb about 10uA

The display reads the approximate

value of hFE (0 to 1000)

Vce about 2.8V

Capacitance

Range Accuracy Resolution

10nF ±(4.0 %+5d) 0.001nF
100nF 0.01nF
1μF 0.1nF
10μF ±(3.0%+5d) 10nF
100μF 10nF
1000μF 100nF
10mF ±(5.0%+30d) 1μF
100mF unspecified 10μF

714

4. INTRODUCTION 8. OPERATING INSTRUCTIONS

Frequency

Range Accuracy Resolution
100Hz 0.1Hz
1000Hz 1Hz
10kHz ±(0.5%+4d) 10Hz
100kHz 100Hz
1MHz 1kHz
10MHz 10kHz

Input Sensitivity: 2.0V.
Overload protection: 250V DC or AC peak.
Duty cycle display: (0.1% -99.9%)

Range Accuracy Resolution

0.1%-99.9% ±(0.5%+3d) 0.1%

Temperature Measurement

Range Accuracy Resolution
−50°C to300°C ±(1.0%+4d) 1°C
301°C to1000°C ±(1.9%+5d) 1°C

-58°F to600°F ±(1.2%+6d) 1°F
601°F to1832°F ±(1.9%+6d) 1°F

Temperature sensor: K-type thermocouple (nickel chromium - nickel silicon) Banana probe.

4.2 HANDLING & STORAGE

Care must still be taken when handling, dropping this machine will have an effect on the
accuracy.

The environment will have a negative result on its operation if you are not careful. If the air
is damp, components will rust. If the machine is unprotected from dust and debris;
components will become clogged.

5.1 SAFETY PRECAUTIONS

This instrument complies with IEC1010 (International Electrotechnical Commission
promulgated safety standards). Design and production using the pollution level 2 safety
requirements.

Warning

To avoid electrical shock or personal injury.

Please read the safety information and “warnings and precautions” before use.

Warning: When measuring voltage above 30V, current above 10ma, AC power with an
inductive load. Use caution not to touch exposed contacts due to the risk of electric shock,
only use approved probes or clamps.

1. Before measuring, check whether the measurement function switch is in the correct

position, check whether the test probe is connected correctly to avoid electric shock.

2. The meter is only to be used in conjunction with the supplied test leads to comply with

safety standards. If the test leads are broken or damaged, replace the test leads of the
same type or the same electrical specifications.

3. Do not use an unapproved fuse to replace the fuse inside the meter. Only replace with

the same model or the same specifications of the fuse. Before changing, remove the
test leads to ensure that there is no signal input.

4. Do not use unapproved batteries to replace the battery inside the meter. Replace only

with the same model or the same electrical specifications of the battery. Before
changing, remove the test leads to ensure that there is no signal input.

5. During electrical measurements, the body must not be directly in contact with the

earth, use insulating materials to keep your body insulated from the earth.

6. Do not store or use in high temperature, high humidity, flammable, explosive and

strong magnetic field environments.

7. Measurements exceeding the limit values of the instrument may damage the

instrument and endanger the safety of the operator.

8. Do not attempt to calibrate or service the instrument.

9. When the LCD shows “ ”, please replace the battery.

10. Do not insert the test leads to be inserted into the current terminals to measure the

voltage!

912

6. IDENTIFICATION 6. IDENTIFICATION

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 Measurement function range switch.
 Probe sockets.

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 HFE Transistor test - input socket.
 HOLD button, backlight on and off.
 NCV sensor area.

6.1 LCD - FIG. 1

FIG.1

Symbolic Description
DC Direct Current
AC Alternating Current

Diode Check, Continuity

AUTO Auto range
MAX-MIN MAX-MIN measurement mode

℃℉ Degrees Celsius, Degrees Fahrenheit

Low battery Indicator

H Data Hold
% Duty Cycle
mv, V Unit of Voltage : Millivolt, Volt
uA、mA、A Unit of Current:

µA: Microamp;mA: Milliamp;A:Ampere

1A=10

3

m A =106µA

nF,µF，mF Unit of Capacitance:

nF:Nanofarad, µF =Microfarad,
1 F =10

6

µF =109nF =1012pF

Ω, kΩ, MΩ Unit of Resistance:

Ω: Ohm, kΩ: Kilohm, MΩ :Megaohm
1 MΩ=103 kΩ=106 Ω

Hz, kHz,MHZ Unit of Frequency

Hz:Hertz kHz:Kilohertz

MHz:Megahertz

1 MHz =10

3

kHz =106 Hz
Auto Power Off is enabled
Relative Measurement Model

NCV Non-contact voltage detector

1110

7. UNPACKING & CHECKING 5. HEALTH & SAFETY INFORMATION

7.1 PACKAGING

Carefully remove the product from the packaging and examine it for any sign of damage
caused during shipping. Lay the contents out and check them. If any part is damaged or
missing, do not attempt to use the tool and contact the Draper Helpline immediately (see
back page for details).

Retain the packaging material at least during the guarantee period: in case the machine
needs to be returned for repair.

Warning! Some of the packaging materials used may be harmful to children, keep them out
of reach from children.

Disposed of any packaging correctly and according to local regulations.

7.2 WHAT´S IN THE BOX?

As well as the product; there are several parts not fitted or attached to it.

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 Test probe
 Temperature probe

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 Test probe caps

8.1 AUTOMATIC POWER OFF

When the instrument is idle for approx. 15 minutes, the meter will automatically enter a
sleep (shutdown) mode, one minute before actual shut-down the built-in buzzer will sound
five times. To restart the unit, press the FUNC key. To turn the auto power off function off
Press and hold "FUNC" while turning on the meter.

8.2 BUZZER

The buzzer will sound (approx. every 0.25 seconds); when the measured voltage or current
is greater than the maximum allowed range. When the voltage stays over the maximum
range the buzzer will continue to sound as the over-range warning.

8.3 LCD BACKLIGHT DISPLAY

Press and hold the "HOLD" button for more than 2 seconds to turn the backlight display on
and off.

8.4 DC VOLTAGE (DCV)

1. Turn the measurement function range switch to the V≂ voltage range connect the black
lead to the central com probe socket and the red lead to the right hand VΩ probe
socket.

2. Press "FUNC" to select DC voltage on the LCD display.

3. The initial status of the instrument defaults to the auto ranging DC voltage mode, which
displays the "AUTO" symbol.

4. Connect the test leads to the test circuit. The measured voltage will be displayed on the
display.

Note:

A) A voltage higher than DC600V or AC600V cannot be measured and will damage the

meter.

8.5 AC VOLTAGE (ACV)

1. Turn the measurement function range switch to the V≂ voltage range, connect the
black lead to the central com probe socket and the red lead to the right hand V
socket.

2. Press "FUNC" to select the AC voltage range.

3. The initial state of the instrument is auto-ranging and the "AUTO" symbol is displayed.

4. Connect the test leads to the test circuit in parallel to the circuit under test. The polarity
of the red test leads and the measured voltage will be displayed on the display.

Note:

A) A voltage higher than DC600V or AC600V cannot be measured and will damage the

meter.

Ω probe

138

8. OPERATING INSTRUCTIONS 4. INTRODUCTION

8.6 DC CURRENT

1. Turn the measurement function range switch to the current range
μA = Microamps, mA = Milliamps, A = Amps

2. Press the "FUNC" key to select the DC measurement mode (the default is DC
measurement mode).

3. Connect the black lead to the central com probe socket and the red lead to the left
hand 10A probe socket.

4. Connect the test leads to the circuit under test, the measured current will be displayed
on the screen.

Note:

A) This unit can not measure more than 10A, microamps "uA" cannot measure more

than 6000uA, milliamps "mA" cannot measure more than 600mA. Otherwise, the
fuse will blow or damage the instrument.
If "OL" is displayed on the display, the measured current has exceeded 10 Amps.

B) When the test leads are inserted into the current input terminal, you must NOT

connect the test leads in parallel with any circuit. Otherwise, it will damage the
instrument and endanger the safety of the user.

8.7 AC CURRENT

1. Turn the measurement function range switch to the current range
µA = Microamps, mA = Milliamps, A = Amps
and press the "FUNC" key to select the AC measurement mode, and then connect the
instrument to the circuit under test.

2. Connect the black lead to the central com probe socket and the red lead to the left
hand 10A probe socket. The measured current value and the current polarity of the
contact point of the red test lead will be displayed on the screen at the same time.

Note:

A) A current greater than 10A can not be measured at 10A, and a current greater than

600mA can not be measured in the "mA" range, and a current greater than 600µA
can not be measured in the µA range.
If "OL" is displayed on the display, the measured current has exceeded the current
range. Please select a higher range to measure.

B) When the test leads are inserted into the current input terminal, you must NOT

connect the test leads in parallel with any circuit. Otherwise, it will damage the
instrument and endanger the safety of the user.

8. OPERATING INSTRUCTIONS

8.8 RESISTANCE (Ω)

1. Turn the measurement function range switch to the resistance range connect the black
lead to the central com probe socket and the red lead to the right hand V
socket.

2. Connect the test leads in parallel with the measured resistance, measured resistance
will be displayed on the display.

Note:
A) When measuring the resistance, the power supply in the tested circuit must be

turned off, and all the capacitors should be fully discharged.

B) In the measurement of resistance, the appearance of any voltage will cause the

measurement readings are to be incorrect.

8.9 DIODE TEST

1. Turn the measurement function range selection switch to the resistance range.

2. Connect the red lead to the anode of the diode and the black lead to the cathode of the
diode. Read the result from the display.

Note:

A) If the diode is open or the polarity is reversed, "OL" is displayed on the display.
B) When checking the diode, the power supply in the tested circuit must be disconnect-

ed and all the capacitors should be fully discharged.

C) After completing the measurement, immediately disconnect the test leads from the

circuit under test.

Ω probe

8.10 CONTINUITY TEST

1. Turn the measurement function range selection switch to the resistance range.

2. Press the function key to select the continuity buzzer function.

3. If there is continuity in the circuit being tester the buzzer will sound continuously.

8.11 TRANSISTOR HFE TEST

1. Turn the measurement function range selection switch to the hFE.

2. Insert the transistor into the corrisponding holes on the hFE input socket..

3. Read the result from the display.

156

8. OPERATING INSTRUCTIONS 4. INTRODUCTION

8.12 CAPACITANCE (C)

1. Turn the measurement function range switch to the capacitor position.

2. Connect the black lead to the com probe socket and the red lead to the 10A probe
socket.

3. Connect the test leads of the test leads in parallel to the measured capacitance, and
the measured capacitance values will be displayed on the display.

Note:

A) When measuring the capacitance, the power must be disconnected in the tested

circuit, and all the capacitors should be fully discharged.
If "OL" is displayed on the display, the measured capacitance value has exceeded
the current range or the capacitor is short-circuited.

B) When measuring large capacitors, it may take a long time, so please be patient. If

the measured 1000uF takes about 1 minute.

C) After completing all measurements, immediately disconnect the test leads from the

circuit under test.

D) Overload protection: 250V DC or AC peak.

Note:

Capacitance below 100PF can not be measured.

8.13 FREQUENCY (HZ%)

1. Turn the measurement function range switch to "Hz%".

2. Press the function key to select Hz or %.

3. Connect the black lead to the com probe socket and the red lead to the 10A probe
socket.

4. Connect the test leads to the source to be measured, and read the results from the
display.

8.14 TEMPERATURE MEASUREMENT

1. Turn the measurement function range switch to the temperature range.

2. Connect the black lead to the com probe socket and the red lead to the 10A probe
socket.

3. Insert the temperature probe into the "COM" and "V " probe sockets, "V ". The sensing
tip of the temperature probe is placed on the surface of the object to be measured.

Note:
A) Read the current measurement from the display.
B) Press "FUNC" to select Fahrenheit, then press "FUNC" to select Celsius.

8.15 NCV (NON-CONTACT VOLTAGE) MEASUREMENT

Turn the measurement function range switch to the NCV range position. At this time,

the instrument displays "EF" symbol, the sensor is located at the top of the unit, the
closer the unit is to the power source the faster the beeper will sound.
When the voltage is greater than 110V (AC RMS), the meter displays "-" and the
buzzer begins to sound.

Note:

1) Voltage may be present even if not indicated. Do not rely on non-contact voltage

detectors to determine the presence of voltage shielding line. The probing operation
may be affected by factors such as socket design, insulation thickness, and type.

2) The external environment interference may trigger false readings on the non-con-

tact voltage detection.

174

10. EXPLANATION OF SYMBOLS 2. CONTENTS

10.1 EXPLANATION OF SYMBOLS

WEEE
Do not dispose of Waste Electrical
& Electronic Equipment in with
domestic rubbish

Attention.

For indoor use.
Do not expose to rain.

Class II construction
(Double insulated)

Conforms to all relevant
safety standards.

Earth

Fuse

Back light

Warning!
Read instruction manuals before
operating and servicing this
equipment.

Temperature

High voltage / current!
Danger.

Voltage AC

Voltage DC

Current DC

Current AC

A

Resistance in Ohms

Continuity test buzzer

Diode test

hFE (Transistor testing)

Low battery display

NCV

Data hold / Screen lock

Auto power off

Non Contact Voltage test

11.1 DISPOSAL

- At the end of the machine’s working life, or when it can no longer be repaired, ensure

that it is disposed of according to national regulations.

- Contact your local authority for details of collection schemes in your area.

In all circumstances:

• Do not dispose of power tools with domestic waste.

• Do not incinerate.

• Do not abandon in the environment.

• Do not dispose of WEEE*

as unsorted municipal waste.

* Waste Electrical & Electronic Equipment.

192

CONTACT US

Draper Tools Limited, Hursley Road,
Chandler's Ford, Eastleigh, Hampshire. SO53 1YF. U.K.

Helpline:
Sales Desk:

[phone]

[phone]
Internet: www.drapertools.com
E-mail: [e-mail]
General Enquiries: [phone]
Service/Warranty Repair Agent:

For aftersales servicing or warranty repairs, please contact the
Draper Tools Helpline for details of an agent in your local area.

YOUR DRAPER STOCKIST

©Published by Draper Tools Limited.

No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means,
electronic, mechanical photocopying, recording or otherwise without prior permission in writing from Draper Tools Ltd.

DBMC0617