Extech Instruments EX330 User Manual

EX330-EU-ENG – V4.2 1/08
2
Introduction
Congratulations on your purchase of the Extech EX330 Meter. The EX330 offers
AC/DC Voltage, AC/DC Current, Resistance, Diode, Continuity, non-contact
Voltage Detection, Capacitance, Frequency, Duty Cycle, and Temperature (Type
K) functions. Proper use and care of this meter will provide many years of reliable
service.
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.
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 600V.
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.
WARNING
CAUTION
MAX
600V

Extech Instruments EX330 Specifications

General

Type	Digital Multimeter
Display	LCD
Display Count	4000
DC Voltage Range	400mV to 600V
DC Current Range	400µA to 10A
AC Current Range	400µA to 10A
Resistance Range	400Ω to 40MΩ
Frequency Range	10Hz to 10MHz
Diode Test	Yes
Continuity Test	Yes
Data Hold	Yes
Auto Power Off	Yes
Battery Type	9V
Duty Cycle Range	0.1% to 99.9%

Summary

SAFETY INSTRUCTIONS

Input Protection Limits

CAUTIONS

Operating Instructions

NON-CONTACT AC VOLTAGE DETECTOR

Instructions for using the Non-Contact AC Voltage Detector function.

AC VOLTAGE MEASUREMENTS

DC VOLTAGE MEASUREMENTS

AC / DC CURRENT MEASUREMENTS

RESISTANCE MEASUREMENTS

CONTINUITY CHECK

Instructions for performing continuity checks using the meter.

DIODE TEST

CAPACITANCE MEASUREMENTS

Guide to measuring capacitance values with the multimeter.

FREQUENCY MEASUREMENTS

% DUTY CYCLE

CONTACT TEMPERATURE MEASUREMENTS

How to measure temperature using the supplied thermocouple probe.

BATTERY INSTALLATION and LOW BATTERY INDICATION

BATTERY REPLACEMENT

REPLACING THE FUSES

General Specifications

Safety

Safety information related to standards.