Unit UT33B Manuel utilisateur

Page

Title

Overview

Unpacking Inspection

Safety Information

Rules For Safe Operation

International Electrical Symbols

The Meter structure

Functional Buttons

Measurement Operation

A. DC Voltage Measurement

B. AC Voltage Measurement

C. DC Current Measurement

D. Measuring Resistance

E. Diodes and Continuity

Measurement

F. Temperature Measurement

G. Battery Test

Table of Contents (1)

Model UT33B/C/D: OPERATING MANUAL

Table of Contents (2)

Title

H. Square Wave Output

General Specifications

Accuracy Specifications

A. DC Voltage

B. AC Current

C. DC Current

D. Resistance

E. Diodes and Continuity

Measurement

F. Temperature

G. Battery Test

H. Square Wave Output

Maintenance

A. General Service

B. Replacing the Battery

C. Replacing the Fuses

Page

Model UT33B/C/D: OPERATING MANUAL

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.

The Model UT33B, UT33C and UT33D Multimeters (hereafter referred as “the

Meter”) are 3 1/2 digits with steady operations, fashionable design and highly

reliable hand-held measuring instrument. The Meter can measureAC/DC voltage,

AC/DC Current, Resistance, Temperature, Diode and Continuity. It is an ideal

tool for maintenance.

Except where noted, the descriptions and instructions in this Operating Manual

apply to all Model UT33B/UT33C/UT33D.

Model UT33B/C/D: OPERATING MANUAL

Open the package case and take out the Meter. Check the following items carefully

to see any missing or damaged part:

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

Unpacking Inspection

Item

Description Qty

1 piece

1 pair

1 piece

English Operating Manual

Test Lead

Point Contact Temperature Probe (UT33C only)

Holster

Model UT33B/C/D: OPERATING MANUAL

Safety Information(1)

Safety Information

This Meter complies with the standards IEC61010: in pollution degree 2, overvoltage

category (CAT I 600V, CAT II 300V) and double insulation.

CAT. I: Signal level, special equipment or parts of equipment, telecommunication,

electronic, etc., with smaller transient overvoltages than overvoltages CAT. II.

CAT. II: Local level, appliance, PORTABLE EQUIPMENT etc., with smaller transient

overvoltages than CAT. III

Use the Meter only as specified in this operating manual, otherwise the protection

provided by the Meter may be impaired.

Model UT33B/C/D: OPERATING MANUAL

Safety Information(2)

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 10.

Model UT33B/C/D: OPERATING MANUAL

l 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.

l 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.

l Do not apply more than the rated voltage, as marked on the Meter, between

the terminals or between any terminal and grounding.

l The rotary switch should be placed in the right position and no any

changeover of range shall be made during measurement is conducted to

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:

Rules For Safe Operation (1)

Model UT33B/C/D: OPERATING MANUAL

prevent damage of the Meter.

l When the Meter working at an effective voltage over 60V in DC or 42V rms

in AC, special care should be taken for there is danger of electric shock.

l Use the proper terminals, function, and range for your measurements.

l 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.

l When using the test leads, keep your fingers behind the finger guards.

l Disconnect circuit power and discharge all high-voltage capacitors before

testing resistance, continuity, diodes and current.

l Before measuring current, check the Meter’s fuses and turn off power to

the circuit before connecting the Meter to the circuit.

l 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.

Rules For Safe Operation (2)

Model UT33B/C/D: OPERATING MANUAL

l Remove test leads and temperature probe from the Meter and turn the

Meter power off before opening the Meter case.

l When servicing the Meter, use only the same model number or identical

electrical specifications replacement parts.

l The internal circuit of the Meter shall not be altered at will to avoid damage

of the Meter and any accident.

l 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.

l The Meter is suitable for indoor use.

l Turn the Meter off when it is not in use and take out the battery when not

using for a long time.

l Constantly check the battery as it may leak when it has been using for some

time, replace the battery as soon as leaking appears. A leaking battery

will damage the Meter,

Rules For Safe Operation (3)

Model UT33B/C/D: OPERATING MANUAL

International Electrical Symbols

Continuity Test

AC Current

DC Current

Double Insulated.

Low Battery.

Diode.

Fuse.

Safety Rules

Conforms to Standards of European Union.

Earth Ground

AC or DC

Model UT33B/C/D: OPERATING MANUAL

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