Amprobe MO-100 User Manual

MO-100

Milliohm Meter

Users Manual

• Mode d’emploi

• Bedienungshandbuch

• Manual d’Uso

• Manual de uso

MO-100

Milliohm Meter

Users Manual

July 2009, Rev.1
©2009 Amprobe Test Tools.
All rights reserved. Printed in Taiwan

English

Limited Warranty and Limitation of Liability

Your Amprobe product will be free from defects in material and workmanship for 1 year from the
date of purchase. This warranty does not cover fuses, disposable batteries or damage from accident,
neglect, misuse, alteration, contamination, or abnormal conditions of operation or handling. Resellers
are not authorized to extend any other warranty on Amprobe’s behalf. To obtain service during the
warranty period, return the product with proof of purchase to an authorized Amprobe Test Tools
Service Center or to an Amprobe dealer or distributor. See Repair Section for details. THIS WARRANTY
IS YOUR ONLY REMEDY. ALL OTHER WARRANTIES - WHETHER EXPRESS, IMPLIED OR STAUTORY ­INCLUDING IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY,
ARE HEREBY DISCLAIMED. MANUFACTURER SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT,
INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES, ARISING FROM ANY CAUSE OR THEORY.
Since some states or countries do not allow the exclusion or limitation of an implied warranty or of
incidental or consequential damages, this limitation of liability may not apply to you.

Repair

All test tools returned for warranty or non-warranty repair or for calibration should be accompanied
by the following: your name, company’s name, address, telephone number, and proof of purchase.
Additionally, please include a brief description of the problem or the service requested and include
the test leads with the meter. Non-warranty repair or replacement charges should be remitted in the
form of a check, a money order, credit card with expiration date, or a purchase order made payable to
Amprobe® Test Tools.

In-Warranty Repairs and Replacement – All Countries

Please read the warranty statement and check your battery before requesting repair. During the
warranty period any defective test tool can be returned to your Amprobe® Test Tools distributor
for an exchange for the same or like product. Please check the “Where to Buy” section on www.
amprobe.com for a list of distributors near you. Additionally, in the United States and Canada In­Warranty repair and replacement units can also be sent to a Amprobe® Test Tools Service Center
(see address below).

Non-Warranty Repairs and Replacement – US and Canada

Non-warranty repairs in the United States and Canada should be sent to a Amprobe® Test Tools
Service Center. Call Amprobe® Test Tools or inquire at your point of purchase for current repair
and replacement rates.

In USA In Canada
Amprobe Test Tools Amprobe Test Tools
Everett, WA 98203 Mississauga, ON L4Z 1X9
Tel: 877-AMPROBE (267-7623) Tel: [phone]

Non-Warranty Repairs and Replacement – Europe

European non-warranty units can be replaced by your Amprobe® Test Tools distributor for a
nominalv charge. Please check the “Where to Buy” section on www.amprobe.com for a list of
distributors near you.

European Correspondence Address*
Amprobe® Test Tools Europe
In den Engematten 14
79286 Glottertal, Germany
Tel.: [phone] - 0
*(Correspondence only – no repair or replacement available from this address. European

customers please contact your distributor.)

MO-100

Milliohm Meter

1

3 4

Current Injection Terminals

1

Meet LVD & EMC requirement

3

Rotary Selector Switch

5

Over Temperature indicator. Lit = Over-temperature or test stopped.

Resistance between the current leads too high (fuse!).

Resistance between the potential leads too high.

CAUTION!

If “NO TEST” LED lit, the current source is stopped.

Potential Injection Terminals

2

Liquid Crystal Display

4

Start / Stop Test

6

526

MO-100

Milliohm Meter

CONTENTS

SYMBOLS ...............................................................................................................2

CAUTIONS AND PRECAUTIONS ...........................................................................2

UNPACKING AND INSPECTION ............................................................................3

INTRODUCTION .....................................................................................................4

OPERATION ............................................................................................................6

Preparation For Use .........................................................................................6

Check the Battery .............................................................................................6

Check the Current Regulation .........................................................................6

Check the Voltage Measurement ....................................................................6

Measuring .........................................................................................................7

Test Leads ..........................................................................................................8

Supplied Potential Test Leads ..........................................................................8

Supplied Current Test Leads ............................................................................8

Thermal Effects .................................................................................................9

SPECIFICATION ......................................................................................................10

Electrical ...........................................................................................................10

Mechanical .......................................................................................................10

Rated environmental conditions .....................................................................11

MAINTENANCE AND REPAIR ................................................................................12

Battery Replacement .......................................................................................12

Fuses Replacement ...........................................................................................13

1

SYMBOLS

Caution ! Refer to the explanation in this Manual



Caution, Risk of Electric Shock



Please remove all the test leads before performing maintenance,



cleaning, battery replacement, fuse replacement, etc

Conforms to relevant Australian standards



Complies with European Directives



Do not dispose of this clamp meter as unsorted municipal waste.



Contact a qualified recycler for disposal.

WARNING!



Do not operate this instrument in the presence of gasoline, natural gas,
propane, or in other combustible atmospheres.

CAUTIONS AND PRECAUTIONS
Refer to this manual before using the meter

• This instrument should only be used by a competent, suitably trained

person which fully understand the test & measurement procedure.

• Read the User’s manual carefully and completely before using the

instrument. Fully understand the instructions before using this product.
Follow the instructions for every test. Take all the necessary precautions.
Do not exceed the limits of this instrument.

• The tested circuit must be de-energised and isolated before connections

are made to it.

• Do not use test leads, probes or crocodiles/aligators clips that are dirty,

damaged or have broken or cracked insulation. Such accessories should
be removed and repaired Immediately.

• Always disconnect the test leads before replacing any fuse or battery.

• Always replace the fuse with same type and rating; ensure that they are

correctly fitted on fuse terminals.

• Double check the switch settings and leads connections before

measuring. Make a sketch to ensure proper operation and principle of
measurement is correct and well understood.

• Do not touch any exposed wiring, connections or other “live” parts of

an electrical circuit. If in doubt, check the circuit first for voltage before
touching it.

2