Unit UT50D Manuel utilisateur

Overview

Unpacking Inspection

Safety Information

Rules For Safe Operation

International Electrical Symbols

The Meter Structure

Functional Buttons

Display Symbols

Measurement Operation

A. DC Voltage Measurement

B. AC Voltage Measurement

C. DC Current Measurement

D. AC Current Measurement

E. Measuring Resistance

F. Inductance Measurement

G. Capacitance Measurement

H. Temperature Measurement

I. Measuring Diodes & Continuity

Sleep Mode

Turning on the Auto Display Backlight

General Specifications

Accuracy Specifications

A. DC Voltage

B. AC Voltage

C. DC Current

D. AC Current

E. Resistance Test

F. Inductance

G. Capacitance

H. Temperature

I. Diodes and Continuity Test

Table of Contents

Model UT50D: OPERATING MANUAL

Maintenance

A. General Service

B. Replacing the Battery

C. Replacing the Fuses

Model UT50D: OPERATING MANUAL

Digital Multimeters Model UT50D (hereafter referred to

as “the Meter”) is a 3 1/2 digits with steady operations,

fashionable structure and highly reliable hand-held

measuring instrument. The Meter uses large scale of

integrated circuit with double integrated A/D converter

as its core and has full range overload protection. The

Meter not only can measure AC/DC Voltage, AC/DC

Current, Resistance, Capacitance, Temperature,

Inductance, Diodes and Continuity, but also has Data

Hold, Full Icon Display and Sleep Mode features.

The Meter adopted advanced “co-injection” technique in

order to provide sufficient insulation and anti-shaking.

In addition, the Automatic Display Backlight feature

enables user to work in a dim condition.

Warning

To avoid electric shock or personal injury, read the

“Safety Information” and “Rules for Safety Operation”

carefully before using the Meter.

Model UT50D: OPERATING MANUAL

1 English Operating Manual 1 piece

2 Test Lead 1 pair

3 Test Clip 1 piece

4 Point Contact Temperature Probe

5 9V Battery (NEDA 1604, 6F22 or 009P)

(installed inside the Meter)

1 piece

Item Description Qty

In the event you find any missing or damage, please

contact your dealer immediately.

Model UT50D: OPERATING MANUAL

Safety Information

This Meter complies with the standards IEC61010: in

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

CAT. III 600V) and double insulation.

CAT. II: Local level, appliance, PORTABLE EQUIPMENT

etc., with smaller transient voltage overvoltages than

CAT. III

CAT. III: Distribution level, fixed installation, with smaller

transient overvoltages than CAT. IV

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 UT50D: OPERATING MANUAL

Rules For Safe Operation (1)

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.

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.

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:

Model UT50D: OPERATING MANUAL

Rules For Safe Operation (2)

Disconnect circuit power and discharge all high

-voltage capacitors before testing resistance,

continuity, diodes, capacitance or current.

Before measuring current, check the Meter’s

fuses and turn off power to the circuit before

connecting the Meter to the circuit.

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, test clips and temperature

probe 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

and take out the battery when not using for a long

time.

Constantly check the battery as it may leak when

it has been using for some time, replace the battery

as soon as leaking appears. Aleaking battery will

damage the Meter.

Model UT50D: OPERATING MANUAL

International Electrical Symbols

AC (Alternating Current).

DC (Direct Current).

Grounding.

Double Insulated.

Deficiency of Built-In Battery.

Warning. Refer to the Operating Manual.

Conforms to Standards of European Union.

Diode.

AC or DC.

Fuse.

Continuity Test.

Model UT50D: OPERATING MANUAL

(figure 1)

The Meter Structure (see figure 1)

1. LCD Display

2. Data Hold Button.

3. Rotary Switch

4. Other Input Terminals

5. COM Input Terminal

6. 20A Input Terminal

7. mA Input terminal

8. Power

Model UT50D: OPERATING MANUAL

Button Operation Performed

Turn the Meter on and off.

lPress down the POWER to turn

on the Meter.

lPress up the POWER to turn off

the Meter.

HOLD

(Blue Button) lPress HOLD once to enter hold

mode.

lPress HOLD again to exit hold

mode.

lIn Hold mode, is displayed and

the present value is shown.

POWER

(Yellow Button)

Functional Buttons

Below table indicated for information about the functional

button operations

Model UT50D: OPERATING MANUAL

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