Extech MN30 User Manual

USER MANUAL

True RMS AutoSensingTM
Multimeter + NCV

Model MN30

Please visit www.extech.com for user manual translations

2

Introduction

Thank you for selecting the Model MN30 Tru e RM S
AutoSensing
(NCV). The MN30 automatically senses AC Voltage, DC Voltage
or Resistance/Continuity measurement types. This device is
shipped fully tested and calibrated and, with proper use, will
provide years of reliable service. Please visit our website
(www.extech.com
Manual, Translations, Product Updates, Product Registration,
and Customer Support.

Features

• Unique smart AutoSensing

• Non-contact Voltage Detector

• Automatic Power OFF (APO)

• Low battery indicator

• Rugged, battery operated, and portable

PER IEC1010 OVERVOLTAGE INSTALLATION CATEGORY

OVERVOLTAGE CATEGORY I

Equipment of OVERVOLT AGE CATEGORY I is equipment for connection to circuits in
which measures are taken to limit the transient over-voltages to an appropriate low
level.
Note – Examples include protected electronic circuits.

OVERVOLTAGE CATEGORY II

Equipment of OVERVOLTAGE CATEGORY II is energy-consuming equipment to be
supplied from the fixed installation.
Note – Examples include household, office, and laboratory appliances.

OVERVOLTAGE CATEGORY III

Equipment of OVERVOLTAGE CATEGORY III is equipment in fixed installations.
Note – Examples include switches in the fixed installation and some equipment for
industrial use with permanent connection to the fixed installation.

OVERVOLTAGE CATEGORY IV

Equipment of OVERVOLTAGE CATEGORY IV is for use at the origin of the installation.
Note – Examples include electricity meters and primary over-current protection
equipment.

TM

Multimeter with Non-contact Voltage Detector

) to check for the latest version of this User

TM

feature

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Safety Information

This symbol, adjacent to another symbol, indicates user

information.

To ensure the safe operation and service of the meter, follow these
instructions closely. Failure to observe warnings can result in severe injury.

WARNINGS

WARNINGS identify hazardous conditions that could cause BODILY HARM
or DEATH.

• Keep hands and fingers behind the finger guards at all times.

• Remove test leads before opening the meter.

• Use the meter only as specified in this User Manual.

• Use the proper terminals when taking measurements.

• Verify the meter’s operation by measuring a known voltage.

• Do not apply more than the rated voltage between terminals or between any

terminal and earth ground.

• Use caution with voltages above 30 VAC RMS, 42 VAC peak, or 60 VDC. These

voltages pose a shock hazard.

• To avoid electric shock, replace batteries when low battery indicator is displayed.

• Disconnect power to the circuit under test and discharge all capacitors before

testing resistance.

• Do not use the meter in the presence of explosive gas or vapor.

• To reduce risk of fire or electric shock, do not use the meter if it is wet.

• Individual protective equipment should be used if HAZARDOUS LIVE parts in the

installation where measurements are to be carried out could be accessible.

CAUTIONS

CAUTIONS identify conditions and actions that could cause DAMAGE to
the meter or equipment under test.

• Do not expose the meter to extremes in temperature or humidity.

Safety Symbols

Equipment protected by double or reinforced insulation

must refer to manual or user guide for further

Risk of electrical shock

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