EasyManua.ls Logo

Extech Instruments Extech 470 User Manual

Extech Instruments Extech 470
21 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #2 background image
V5.0 5/04 2
Introduction
Congratulations on your purchase of the Extech 470 (part number
EX470) True RMS Autoranging Multimeter plus IR Thermometer.
This meter measures AC/DC Voltage, AC/DC Current, Resistance,
Capacitance, Frequency, Duty Cycle, Diode Test, and Continuity
plus Thermocouple and Non-Contact IR Temperature. 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 (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.
This symbol indicates there is a potential
hazard from a laser light source.
WARNING
CAUTION
MAX
600V
Question and Answer IconNeed help?

Do you have a question about the Extech Instruments Extech 470 and is the answer not in the manual?

Extech Instruments Extech 470 Specifications

General IconGeneral
BrandExtech Instruments
ModelExtech 470
CategoryThermometer
LanguageEnglish

Summary

Safety

Safety Symbols and Explanations

Explains meter safety symbols: general, warning, caution, voltage limits, hazardous terminals, insulation, and laser hazards.

Safety Instructions

General Safety Precautions

Crucial safety rules for meter operation: max voltage, caution with high voltage, connection rules, and lead handling.

Controls and Jacks Overview

Meter Component Identification

Identifies physical controls, jacks, and display elements of the multimeter.

Symbol and Annunciator Glossary

Details meanings of meter LCD symbols, annunciators, and associated units.

Specifications - Voltage and Current

Voltage Measurement Specifications

Details ranges, resolutions, and accuracy for DC and AC voltage measurements.

Current Measurement Specifications

Details ranges, resolutions, and accuracy for DC and AC current measurements.

Specifications - Resistance, Frequency, Duty Cycle

Resistance and Capacitance Specs

Covers resistance and capacitance measurement ranges, resolutions, and accuracy.

Frequency and Duty Cycle Specs

Details frequency and duty cycle measurement ranges, resolutions, and accuracy.

Specifications - Temperature and Other Functions

Temperature Measurement Specs

Lists ranges, resolutions, and accuracy for Type-K and IR temperature measurements.

Diode, Continuity, and Meter Specs

Outlines specs for diode test, continuity, sensor, IR response, input impedance, and operating conditions.

Operating Instructions - General and DC Voltage

General Operation Precautions and Notes

Essential warnings and notes for meter operation, including OL readings and input sensitivity.

DC Voltage Measurement Procedure

Step-by-step process for accurately measuring DC voltage using the multimeter.

Operating Instructions - AC Voltage

AC Voltage Measurement Procedure

Steps for performing AC voltage measurements, including safety warnings.

Operating Instructions - DC Current

DC Current Measurement Procedure

Guides on measuring DC current, including setup and circuit connection.

Operating Instructions - AC Current

AC Current Measurement Procedure

Steps for measuring AC current, emphasizing circuit interruption and connection.

Operating Instructions - Resistance

Resistance Measurement Procedure

Describes how to measure resistance, safety precautions, and accuracy best practices.

Operating Instructions - Continuity and Diode

Continuity Check Procedure

Explains continuity checks, including audible signal conditions and OL display.

Diode Test Procedure

Details diode tests, expected forward/reverse voltage readings, and shorted/open device indications.

Operating Instructions - Contact Temperature

Contact Temperature Measurement

Details procedure for measuring temperature using a contact Type-K probe.

Operating Instructions - Non-Contact Temperature

Non-Contact Temperature Measurement

Explains IR temperature measurement, spot size, and laser safety.

Operating Instructions - Other Functions

Capacitance Measurement

Explains how to measure capacitance values.

Frequency Measurement

Details steps for measuring signal frequency.

Duty Cycle Measurement

Explains how to measure the percentage of duty cycle.

Range Selection and Modes

Autoranging and Manual Range Selection

Explains switching between automatic and manual range selection.

Relative Measurement Mode

Describes using relative mode for comparisons against a stored reference.

Meter Features and Indicators

Display, Hold, and Power Features

Covers backlight, hold function, and auto power off.

Status and Warning Indicators

Explains low battery and wrong connection indicators, icons, and sounds.

Maintenance Guidelines

General Care and Storage

Instructions for keeping meter dry, handling, cleaning, and storage.

Battery and Fuse Handling

Advises on using fresh batteries and removing old ones for storage.

Battery Installation

Fuse Replacement

Fuse Replacement Procedure

Steps to replace fuses, including safety warnings and fuse specs.

UL Listed Mark Interpretation

Clarifies UL mark meaning regarding accuracy evaluation.

Related product manuals