Extech EX210T User guide

True RMS Multimeter with
IR Thermometer

Extech EX210T

User Guide

Introduction

Thank you for selecting the Extech EX210T True RMS Autoranging Multimeter. This meter measures
AC/DC Voltage, AC/DC Current, Resistance, Diode Test, and Continuity plus non-contact InfraRed
Temperature. Proper use and care of this meter will provide many years of reliable service. Please visit
the Extech Instruments website (www.extech.com
Extech Instruments is an ISO-9001 certified company.

) to check for the latest version of this User Guide.

Safety

This symbol adjacent to another symbol, terminal or operating device indicates
that the operator must refer to an explanation in the Operating Instructions to
avoid personal injury or damage to the meter.

WARNING

CAUTION

MAX
600V

This WARNING symbol indicates a potentially hazardous situation, which if not
avoided, could result in death or serious injury.

This CAUTION symbol indicates a potentially hazardous situation, which if not
avoided, may result damage to the product.

This symbol advises the user that the terminal(s) so marked must not be
connected to a circuit point at which the voltage with respect to earth ground
exceeds (in this case) 600 VAC or VDC.

This symbol adjacent to one or more terminals identifies them as being associated
with ranges that may, in normal use, be subjected to particularly hazardous
voltages. For maximum safety, the meter and its test leads should not be handled
when these terminals are energized.

This symbol indicates that a device is protected throughout by double insulation or
reinforced insulation.

2

EX210T-EU-EN V1.1 8/12

PER IEC1010 OVERVOLTAGE INSTALLATION CATEGORY

OVERVOLTAGE CATEGORY I

Equipment of OVERVOLTAGE CATEGORY I is equipment for connection to circuits in which
measures are taken to limit the transient overvoltages 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

CAUTIONS

 Improper use of this meter can cause damage, shock, injury or death. Read and understand

this user manual before operating the meter.

 Always remove the test leads before replacing the battery or fuses.

 Inspect the condition of the test leads and the meter itself for any damage before operating the

meter.

 Use great care when making measurements if the voltages are greater than 25 VAC rms or 35

VDC. These voltages are considered a shock hazard.

 Warning! This is a Class A device. This device can cause interference in residential areas.

 Always discharge capacitors and remove power from the device under test before performing

Diode, Resistance or Continuity tests.

 Voltage checks on electrical outlets can be difficult and misleading because of the uncertainty

of connection to the recessed electrical contacts. Other means should be used to ensure that
the terminals are not "live".

 If the equipment is used in a manner not specified by the manufacturer, the protection provided

by the equipment may be impaired.

 This device must not be used by children. It contains hazardous objects as well as small parts

that the children could swallow.

 Do not leave batteries and packing material lying around unattended; they can be dangerous

to children.

 In the event that this device will be stored for an extended period of time, remove the batteries.

 Expired or damaged batteries can leak and can be hazardous to skin. Use suitable hand

gloves in such cases.

 Do not short-circuit the battery. Do not place the battery near a fire.

 Never mix battery types. Always install new batteries of the same type.

3

EX210T-EU-EN V1.1 8/12

SAFETY INSTRUCTIONS

This meter has been designed for safe use, but must be operated with caution. The rules listed below
must be carefully followed for safe operation.

1. NEVER apply voltage or current to the meter that exceeds the specified maximum:

Input Protection Limits

Function Maximum Input

V AC/DC, Resistance, Diode Test, Continuity 600 VDC/AC rms

μA or mA AC/DC 200mA fused

A AC/DC 10A fused

2. USE EXTREME CAUTION when working with high voltages.

3. DO NOT measure voltage if the voltage on the "COM" input jack exceeds 600V above earth
ground.

4. NEVER connect the meter leads across a voltage source while the function switch is in the
current, resistance, or diode mode. Doing so can damage the meter.

5. ALWAYS discharge filter capacitors in power supplies and disconnect the power when making
resistance or diode tests.

6. ALWAYS turn off the power and disconnect the test leads before opening the covers to replace
the fuse or batteries.

7. NEVER operate the meter unless the back cover and the battery and fuse covers are in place
and fastened securely.

8. If the equipment is used in a manner not specified by the manufacturer, the protection provided
by the equipment may be impaired.

4

EX210T-EU-EN V1.1 8/12