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Greenlee DM-20 User Manual

Greenlee DM-20
48 pages
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999 6758.8 © 2004 Greenlee Textron Inc. 12/04
DM-20
Digital
Multimeter
Multímetro
digital
Contrôleur
numérique
INSTRUCTION MANUAL
MANUAL DE INSTRUCCIONES
MANUEL D’INSTRUCTIONS
Read and understand all of the instructions
and safety information in this manual before
operating or servicing this tool.
Lea y entienda todas las instrucciones y la
información sobre seguridad que aparecen
en este manual, antes de manejar esta
herramienta o darle mantenimiento.
Lire attentivement et bien comprendre
toutes les instructions et les informations sur
la sécurité de ce manuel avant d‘utiliser ou de
procéder à l‘entretien de cet outil.
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Greenlee DM-20 Specifications

General IconGeneral
Continuity TestYes
Diode TestYes
Power Supply9V battery
Safety RatingCAT III 600V
DisplayLCD
AC Voltage Range200V, 600V
DC Current Range200µA to 10A
Display Count2000
Resistance Range200Ω, 2kΩ, 20kΩ, 200kΩ, 2MΩ

Summary

Important Safety Information

Safety Alert Symbol Definitions

Explains the purpose and meaning of safety symbols used in the manual.

Hazard Level Definitions

Defines DANGER, WARNING, and CAUTION hazard levels and their consequences.

General Electrical Safety Precautions

Precautions against moisture, damage, lead condition, and intended use to prevent shock and fire.

Voltage and Contact Precautions

Warns against exceeding rated voltage and touching test lead tips to prevent electric shock.

Case Operation and Opening Safety

Safety rules regarding operating with the case open or before opening it.

Fuse Replacement Safety

Importance of using correct fuse type for overvoltage protection to prevent shock.

Measurement and Interference Precautions

Safety during voltage/current measurement and potential impact of electromagnetic interference.

Measurement Function Change Caution

Caution against changing measurement function while test leads are connected to avoid injury or damage.

Repair and Environmental Cautions

Cautions against attempting repair and exposing the unit to extreme temperatures or humidity.

Selector and Connection Settings

Importance of correct selector and test lead connections to prevent blown fuses.

Identification

Unit Component Overview

Identifies key parts of the multimeter like display, selector, and test leads.

Display Icon Meanings

Explains the meaning of various icons shown on the multimeter's LCD display.

Unit Symbol Meanings

Explains the meaning of symbols marked on the multimeter unit itself.

Operation

Operational Safety Warning

Warns that contact with live circuits during operation can cause severe injury or death.

Measurement Settings Table

Table detailing measurement values and corresponding selector settings for proper operation.

Typical Measurements

Voltage Measurement Procedure

Illustrates how to perform a voltage measurement with the multimeter.

Current Measurement Procedure

Illustrates how to perform a current measurement with the multimeter.

Resistance Measurement Procedure

Illustrates how to perform a resistance measurement with the multimeter.

Continuity Check Procedure

Illustrates how to perform a continuity check with the multimeter.

Diode Measurement Procedure

Illustrates how to perform a diode measurement with the multimeter.

Accuracy

DC Current Accuracy Details

Specifies the accuracy and burden voltage for DC current measurements.

AC Voltage Accuracy Details

Specifies the accuracy, frequency range, and input impedance for AC voltage.

DC Voltage Accuracy Details

Specifies the accuracy and input impedance for DC voltage measurements.

Resistance Accuracy Details

Specifies the accuracy and typical open circuit voltage for resistance measurements.

Battery, Diode, and Continuity Accuracy

Specifies test current/threshold and accuracy for battery, diode, and continuity tests.

Specifications

Display and Polarity Specs

Details the multimeter's display type, count, and automatic polarity feature.

Sampling Rate and Temp Coefficient

Specifies the measurement sampling rate and accuracy change with temperature.

Overload Protection and Measurement Category

Details overload protection, fuses, and measurement category (Category II, 300V).

Operating and Storage Conditions

Lists acceptable operating and storage temperature, humidity, and altitude.

Battery Specification

Specifies the type of battery required for the unit.

Measurement Categories

Category I Definition

Defines Category I as signal level for electronic and telecommunication equipment.

Category II Definition

Defines Category II as local level for appliances and portable equipment.

Category III Definition

Defines Category III as distribution level for installed machines and building systems.

Category IV Definition

Defines Category IV as primary supply level for overhead lines and utility equipment.

Maintenance

Maintenance Safety Cautions

Cautions against attempting repair and exposing the unit to extreme environments during maintenance.

Battery and Fuse Replacement Procedure

Step-by-step guide for safely replacing the battery and fuse.

Cleaning

Cleaning Instructions

Instructions for cleaning the multimeter case with mild detergent.

Lifetime Limited Warranty

Warranty Terms and Coverage

States the limited lifetime warranty for defects in workmanship and material, excluding normal wear and abuse.

Test Instrument Repair Process

Instructions for contacting customer service for test instrument repairs and obtaining return authorization.

Non-Warranty Repair Quotes

Information on obtaining repair cost quotes for items not covered under warranty.

Pre-Return Checklist

Advice to check batteries before returning a test instrument for service.

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