Tenma 72-7222 Manuel utilisateur

Model 72-7222: OPERATING MANUAL

Table of Contents

Title Page

Overview

Inspection

Safety Information

Rules For Safe Operation

International Electrical Symbols

The Meter Structure

Rotary Switch

Function Buttons

Function Button Use

Display Symbols

Measurement Operation

A. DC Voltage Measurement

B. AC Voltage Measurement

C. Measuring Resistance

D. Testing Diodes

E. Testing for Continuity

F. Temperature Measurement

G. AC Current Measurement

Sleep Mode

Specifications

A. General Specifications

B. Environmental Restriction

Accuracy Specifications

A. AC Voltage

B. DC Voltage

C. Resistance

D. Continuity Test

E. Diode Test

F. Temperature

G. AC Current

Maintenance

A. General Service

B. Replacing the Battery

Table of Contents

Title Page

Overview

Inspection

Safety Information

Rules For Safe Operation

International Electrical Symbols

The Meter Structure

Rotary Switch

Function Buttons

Function Button Use

Display Symbols

Measurement Operation

A. DC Voltage Measurement

B. AC Voltage Measurement

C. Measuring Resistance

D. Testing Diodes

E. Testing for Continuity

F. Temperature Measurement

G. AC Current Measurement

Sleep Mode

Specifications

A. General Specifications

B. Environmental Restriction

Accuracy Specifications

A. AC Voltage

B. DC Voltage

C. Resistance

D. Continuity Test

E. Diode Test

F. Temperature

G. AC Current

Maintenance

A. General Service

B. Replacing the Battery

Model 72-7222: 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 Safe Operation”

carefully before using the Meter.

The Digital Clamp Multimeter Model #72-7222 (hereafter

referred to as “the Meter”) is 3 1/2 digits with precise

operation, fashionable structure and highly reliable

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 measures AC/DC Voltage, AC Current,

Resistance, Temperature( ), Diodes and Continuity.

oF/ oC

Model 72-7222: OPERATING MANUAL

In the event you find any items missing or damaged,

please contact your dealer immediately.

Inspection

Open the package case and take out the Meter. Check

the following items carefully to see if any items are missing

or damaged.

Point Contact Temperature Probe

4 1.5V Battery (AAA) 2 pieces

Model 72-7222: OPERATING MANUAL

Item

Description

English Operating Manual

Test Lead

Qty

1 piece

1 pair

1 piece

Safety Information

This Meter complies with the standards IEC61010: in

pollution degree 2, overvoltage category (CAT. II 600V,

CAT. III 300V) and double insulation.

CAT. II: Local level, appliance, PORTABLE EQUIPMENT

etc., with smaller transient 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 to.

International electrical symbols used on the Meter and

in this Operating Manual are explained on page 8.

Model 72-7222: OPERATING MANUAL

Rules For Safe Operation (1)

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 ground. 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.

l Whenmeasurementhasbeencompleted,disconnect

the connection between the test leads and the

circuit under test, remove the test leads from the

input terminals of the Meter and turn the Meter

power off.

l The rotary switch should be placed in the correct

position and no change of range made during

measurement, to prevent damage to the Meter.

l Do not carry out the measurement when the

Meter’s back case and battery compartment are

not closed to avoid electric shock.

l Do not input higher than 600V between the Meter’s

terminals and the ground to avoid electric shock

and damage to the Meter.

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:

Warning

Model 72-7222: OPERATING MANUAL

Rules For Safe Operation (2)

l When working at an effective voltage over

60VDC or 30VAC RMS, 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 and diode.

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.

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 Periodically check the battery as it may leak

after some time. If leakage is apparent, the

battery should be immediately replaced to

prevent damage to the Meter.

Model 72-7222: OPERATING MANUAL

International Electrical Symbols

AC (Alternating Current).

DC (Direct Current).

AC or DC.

Ground.

Double Insulated.

Continuity Test.

Diode.

Fuse.

Warning. Refer to the Operating Manual.

Conforms to Standards of European Union.

Capacitance Test

Low Battery

Model 72-7222: OPERATING MANUAL

The Meter Structure (see figure 1)

( figure 1)

1. Input Terminals

2. LCD Display

3. Function Buttons

4. Rotary Switch

5. Trigger: press the lever to open the transformer jaws.

When the pressure on the lever is released, the jaws

will close.

6. Hand Guards: to protect user’s hand from touching

the dangerous area.

7. Transformer Jaws: designed to pick up theAC current

flowing through the conductor.

Model 72-7222: OPERATING MANUAL

Rotary Switch

The following table provides information regarding the

Rotary Switch positions.

Rotary

Switch

Position Function

AC/DC voltage measurement.

: Diode test.

: Resistance measurement.

Ω

Power is turned off.OFF

: Continuity test.

Ω

Temperature measurement

oCoF

AC current measurement range from 0.001A

to 400.0A

Model 72-7222: OPERATING MANUAL

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