Unit UT803 Bedienungsanleitung

Model UT803

OPERATING MANUAL

TABLE OF CONTENTS

TITLE PAGE

Model UT803: OPERATING MANUAL

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 or AC Voltage Measurement

B. DC or AC Current Measurement

C. Measuring Resistance

D. Testing for Continuity

E. Testing Diodes

F. Capacitance Measurement

G. Frequency Measurement

H. Temperature Measurement

I . Measuring Transistor

Operation of Hold Mode

The POWER Button

The SELECT Button

Turning on the Display Backlight

The RANGE Button

The MAX MIN Button

AC/AC+DC Button

TITLE PAGE

Model UT803: OPERATING MANUAL

POWER INPUT Switch

Sleep Mode

RS232 Button

General Specifications

Accuracy Specifications

A. DC Voltage

B. AC Voltage

C. DC Current

D. AC Current

E. Resistance

F. Continuity Test

G. Diode Test

H. Capacitance

I . Frequency

J. Temperature

K. Transistor

Maintenance

A. General Service

B. Replacing the Fuses

C. Replacing the Battery

RS232C and USB Serial Port

System Requirements for Installing the UT803 Interface Program

RS232C Serial Port

A. Connecting between the Meter and computer

B. RS232C Port Cable

C. Setting of RS232C Serial Ports

USB Serial Port

A. Connecting between the Meter and computer

B. Setting of USB Serial Ports

Overview

This Operating Manual covers information on safety

and cautions. Please read the relevant information

carefully and observe all the Warnings and Notes strictly.

Warning

To avoid electric shock or personal injury, read the

“Safety Information” and “Rules for Safety Operation”

carefully before using the Meter.

Digital Bench-Type True RMS Multimeter Model UT803

(hereafter referred to as “the Meter”) has autorange

and manual range options with maximum reading 5999

and 3 5/6 digits which has a unique outlook design.

In addition to all the conventional features including

DC/AC voltage, current, resistance, diode, continuity

test, capacitance, temperature 0C and 0F, transistor,

max/min, there is a data hold, low battery display, sleep

mode, RS232C and USB standard serial port for easy

connection with computer to realize macro recording

and monitoring and capture of transient dynamic data,

displaying change of waveform during the measurement,

providing data and evidence to engineering technicians

for scientific research.

This is also a highly applied digital multimeter of good

performance with full overload protection and display

backlight function.

Model UT803: OPERATING MANUAL

Unpacking Inspection

Open the package case and take out the Meter. Check the following items carefully to see any missing or damaged

part:

Item Description Qty

In the event you find any missing or damage, please contact your dealer immediately.

Model UT803: OPERATING MANUAL

Operating Manual

Test Lead

Alligator Clip

Multi-Purpose Socket

Point Contact Temperature Probe (to be used under 2300C temperature measurement)

Power Cord (AC 250V)

RS232C Interface Cable

USB Interface Cable

Installation Guide & Computer Interface Software (CD-ROM)

1 piece

1 pair

1 piece

Safety Information

This Meter complies with the standards IEC61010: in

pollution degree 2, overvoltage category (CAT. I 1000V,

CAT.II 600V) and double insulation.

CAT III: Distribution level, fixed installation, with smaller

transient overvoltages than CAT. IV

CAT IV: Primary supply level, overhead lines, cable

systems etc.

Use the Meter only as specified in this operating manual,

otherwise the protection provided by the Meter may be

impaired.

In this manual, a Warning identifies conditions and

actions that pose hazards to the user, or may damage

the Meter or the equipment under test.

A Note identifies the information that user should pay

attention on.

International electrical symbols used on the Meter and

in this Operating Manual are explained on page 8.

Model UT803: OPERATING MANUAL

Rules For Safe Operation

Warning

To avoid possible electric shock or personal injury,

and to avoid possible damage to the Meter or to the

equipment under test, adhere to the following rules:

Before using the Meter inspect the case. Do not use

the Meter if it is damaged or the case (or part of the

case) is removed. Look for cracks or missing plastic.

Pay attention to the insulation around the connectors.

Inspect the test leads for damaged insulation or exposed

metal. Check the test leads for continuity. Replace

damaged test leads with identical model number or

electrical specifications before using the Meter.

Do not apply more than the rated voltage, as marked

on the Meter, between the terminals or between any

terminal and grounding.

The rotary switch should be placed in the right position

and no any changeover of range shall be made during

measurement is conducted to prevent damage of the

Meter.

When the Meter working at an effective voltage over

60V in DC or 30V rms in AC, special care should be

taken for there is danger of electric shock.

Use the proper terminals, function, and range for

your measurements.

If the value to be measured is unknown, use the

maximum measurement position and reduce the

range step by step until a satisfactory reading is

obtained.

Do not use or store the Meter in an environment of

high temperature, humidity, explosive, inflammable

and strong magnetic field. The performance of the

Meter may deteriorate after dampened.

When using the test leads, keep your fingers behind

the finger guards.

Disconnect circuit power and discharge all high-

voltage capacitors before testing resistance, continuity,

diodes, current, or capacitance.

Before measuring current, check the Meter’s fuses

and turn off power to the circuit before connecting

the Meter to the circuit.

Model UT803: OPERATING MANUAL

Replace the battery as soon as the battery indicator

appears. With a low battery, the Meter might

produce false readings that can lead to electric shock

and personal injury.

Remove test leads, temperature probe, RS232C

interface cable, USB interface cable and alligator clip

from the Meter and turn the Meter power off before

opening the Meter case.

When servicing the Meter, use only the same model

number or identical electrical specifications

replacement parts.

The internal circuit of the Meter shall not be altered

at will to avoid damage of the Meter and any accident.

Soft cloth and mild detergent should be used to clean

the surface of the Meter when servicing. No abrasive

and solvent should be used to prevent the surface

of the Meter from corrosion, damage and accident.

The Meter is suitable for indoor use.

Turn the Meter power off when it is not in use.

Take out the battery when not using for a long time

if using battery to power on the Meter.

When using battery to power on the Meter, constantly

check the battery as it may lead when it has been

using for some time, replace the battery as soon as

leaking appears. A leaking battery will damage the

Meter.

Model UT803: OPERATING MANUAL

International Electrical Symbols

AC or DC

Grounding

Double Insulated

Warning. Refer to the Operating Manual

Deficiency of Built-In Battery

Continuity Test

Diode

Capacitance Test

Fuse

Conforms to Standards of European Union

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