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UNI-T UT90A User Manual

UNI-T UT90A
36 pages
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Table of Contents
Title Page
Overview
Unpacking Inspection
Safety Information
Rules For Safe Operation
International Electrical Symbols
The Meter Structure
Rotary Switch
Functional Buttons
Display Symbols
Measurement Operation
A. DC Voltage Measurement
B. AC Voltage Measurement
C. DC Current Measurement
D. AC Current Measurement
E. Resistance Measurement
F. Testing Diodes & Continuity
G. Battery Test
General Specifications
Accuracy Specifications
A. DC Voltage
B. AC Voltage
C. DC Current
D. AC Current
E. Resistance
F. Diodes & Continuity Test
Maintenance
A. General Service
B. Replacing the Fuses
C. Replacing the Battery
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Model UT90A: OPERATING MANUAL
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UNI-T UT90A Specifications

General IconGeneral
BrandUNI-T
ModelUT90A
CategoryMultimeter
LanguageEnglish

Summary

Overview

Unpacking Inspection

Safety Information

Rules For Safe Operation (1)

Rules For Safe Operation (2)

The Meter Structure

Measurement Operation

DC Voltage Measurement

Details the procedure for measuring DC voltage, including lead connection and rotary switch settings.

AC Voltage Measurement

Explains how to measure AC voltage, covering lead placement and rotary switch selection.

DC Current Measurement

Provides instructions for measuring DC current, including circuit connection and range selection.

AC Current Measurement

Outlines the steps for measuring AC current, detailing lead connection and rotary switch usage.

Resistance Measurement

Describes the process for measuring electrical resistance, including safety precautions and connection methods.

Testing Diodes & Continuity

Explains how to perform diode tests and continuity checks using the multimeter.

Battery Test

Details the procedure for testing battery voltage using the multimeter.

General Specifications

Accuracy Specifications

Maintenance

Replacing the Fuses

Provides detailed instructions and warnings for replacing the internal fuses of the multimeter.

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