UNI-T UT58A User Manual

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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 and AC Voltage Measurement
B. DC and AC Current Measurement
C. Measuring Resistance
D. Measuring Diodes
E. Testing for continuity
F. Capacitance measurement
G. Temperature Measurement
(UT58B/UT58C only)
H. Measuring Transistor
I. Frequency Measurement (UT58C only)
Sleep Mode
Operation of Hold Mode
General Specifications
Accuracy Specifications
A. DC Voltage
B. AC Voltage
C. DC Current
D. AC Current
E. Resistance Test
F. Diodes Test
G. Continuity Test
H. Capacitance
I. Temperature (UT58B/UT58C only)
J. Transistor Test
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Model UT58A/B/C: OPERATING MANUAL

UNI-T UT58A Specifications

General

Data hold	Yes
Product type	Digital multimeter
AC current range	0.02 - 20 A
AC voltage range	2 - 750 V
DC current range	0.002 - 20 A
DC voltage range	0.2 - 1000 V
Capacitance range	2 - 100000 nF
Basic accuracy (DC current)	±(0.8%+1)
Basic accuracy (DC voltage)	±(0.5%+1)
Basic accuracy (capacitance)	±(4%+3)
Battery voltage	9 V
Dimensions (WxDxH)	88 x 39 x 179 mm

Weight and Dimensions

Weight	350 g

Summary

Overview

Unpacking Inspection

Safety Information

Rules For Safe Operation

International Electrical Symbols

The Meter Structure

Rotary Switch

Functional Buttons

Display Symbols(1)

Display Symbols(2)

Measurement Operation(1)

A. DC and AC Voltage Measurement

Details how to measure DC and AC Voltage using the multimeter.

Measurement Operation(2)

B. DC and AC Current Measurement

Explains the procedure for measuring DC and AC current with the multimeter.

Measurement Operation(3)

Measurement Operation(4)

C. Measuring Resistance

Provides instructions for measuring resistance values using the multimeter.

Measurement Operation(5)

Measurement Operation(6)

D. Measuring Diodes

Guides on how to perform diode tests with the multimeter.

Measurement Operation(7)

E. Testing for Continuity

Explains how to use the multimeter for continuity testing.

Measurement Operation(8)

F. Capacitance Measurement

Details the process for measuring capacitance with the multimeter.

Measurement Operation(9)

G. Temperature Measurement (UT58B/UT58C only)

Instructions for measuring temperature with specific models.

Measurement Operation(10)

H. Measuring Transistor

How to measure transistor parameters using the multimeter.

Measurement Operation(11)

I. Frequency Measurement (UT58C only)

Steps to measure frequency using the UT58C model.

Operation of Hold Mode

General Specifications

Accuracy Specifications(1)

A. DC Voltage

Specifies accuracy and overload protection for DC Voltage measurements.

Accuracy Specifications(2)

C. DC Current

Details accuracy and overload protection for DC Current measurements.

D. AC Current

Details accuracy and overload protection for AC Current measurements.

Accuracy Specifications(3)

E. Resistance

Accuracy and overload protection for resistance measurements.

F. Diodes Test

Accuracy and overload protection for diode tests.

G. Continuity Test

Accuracy and remarks for continuity testing.

Accuracy Specifications(4)

H. Capacitance

Accuracy and overload protection for capacitance measurements.

I. Temperature (UT58B/UT58C only)

Accuracy specifications for temperature measurement on specific models.

Accuracy Specifications(5)

J. Transistor test

Accuracy specification for transistor testing.

K. Frequency ( UT58C only)

Accuracy for frequency measurement on UT58C.

Maintenance(1)

A. General Service

Basic maintenance procedures for the multimeter.

B. Replacing the fuse

Instructions for replacing the fuse in the multimeter.

Maintenance(2)

C.Replacing the Battery

Steps to replace the battery in the multimeter.