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RAPITEST DM25 User Manual

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DIGITAL
MULTIMETER
OPERATOR'S
MANUAL
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RAPITEST DM25 Specifications

General IconGeneral
BrandRAPITEST
ModelDM25
CategoryMultimeter
LanguageEnglish

Summary

Safety Information and Precautions

Preliminary Safety Guidelines

User must observe safety rules for electrical current and meter misuse. Test leads must be supplied and in good condition.

Safe Usage Practices

Instructions on not exceeding limits, avoiding unused terminals, setting highest range for unknown values, and safe measurement practices.

Understanding Safety Symbols

Explains safety symbols, earth ground, double insulation, and CAT II/III voltage limits for safe operation.

Maintenance Safety Protocols

Instructions on disconnecting leads, fuse replacement, handling faults, and cleaning the meter safely.

Digital Multimeter Overview

Function and Range Selection

States there are 8 functions and 32 ranges, selected by a rotary switch for precise measurements.

Power Switch and Auto-Off

Describes the push-push switch for on/off and the optional Auto Power-Off function to conserve battery life.

Input Jack Connections

Details the four input jacks, their overload protection, and correct test lead connection procedures.

Core Operating Procedures

How to Measure Voltage

Steps for connecting leads, setting rotary switch, reading display, and handling overrange situations for voltage.

How to Measure Current

Steps for connecting leads to A or 10A jacks, setting rotary switch, and reading display for current measurements.

How to Measure Resistance

Steps for connecting leads, setting rotary switch, reading display, and notes on stabilization for resistance.

Diode Testing Guide

Steps for connecting leads, setting rotary switch, and connecting to the diode for forward voltage drop measurement.

Transistor Testing Guide

Instructions on setting hFE position, identifying transistor type, inserting leads, and reading the hFE value.

Continuity Testing

Steps for connecting leads, setting rotary switch, and testing for continuity with the built-in buzzer.

Technical Performance Specifications

General Device Specifications

Covers max voltage, fuse protection, power supply, display, measuring method, overrange, polarity, low battery, and operating temperature.

DC Voltage Measurement Specs

Details the range, resolution, and accuracy for DC voltage measurements.

AC Voltage Measurement Specs

Details range, resolution, accuracy, input impedance, and frequency range for AC voltage.

DC Current Measurement Specs

Details range, resolution, accuracy, burden voltage, and overload protection for DC current.

AC Current Measurement Specs

Details range, resolution, accuracy, burden voltage, overload protection, and frequency range for AC current.

Resistance Measurement Specs

Details range, resolution, accuracy, maximum open circuit voltage, and notes for resistance measurements.

Diode and Continuity Specs

Details range, description, and test conditions for diode testing and continuity.

Included Accessories and Holster

List of Supplied Accessories

Lists supplied accessories like test leads, battery, operating manual, and holster with model numbers.

Holster Usage Instructions

Explains holster purpose and how to use its stands for support, hanging, and holding test leads.

Battery and Fuse Management

Replacement Procedures

Instructions on battery replacement (low battery sign) and fuse replacement, including warnings and fuse ratings.