Tenma 72-8155 Manual de usuario

Model 72-8155: OPERATING MANUAL

Table of Contents

Title Page

Overview

Inspection

Safety Information

Rules For Safe Operation

International Electrical Symbols

The Meter Structure

Functional Buttons

Display Symbols

Measurement Operation

A. Measuring Resistance

B. Diode and Continuity Test

C. Capacitance Measurement

D. Inductance Measurement

E. Transistor hFE Measurement

General Specifications

Accuracy Specifications

A. Resistance Test

B. Continuity & Diodes

C. Capacitance Test

D. Inductance Test

E. Transistor

Maintenance

A. General Service

B. Replacing the Battery

C. Replacing the Fuse

Model 72-8155: OPERATING MANUAL

To avoid electric shock or personal injury, read the

“Safety Information” and “Rules for Safety Operation”

carefully before using the Meter.

Warning

Model 72-8155: 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.

Digital Inductance Capacitance Meter Model 72-8155

(hereafter referred to as “the Meter”) is a 3 1/2 digits with

steady operations, fashionable design and highly reliable

hand-held measuring instrument.

The Model 72-8155 will measure capacitance, inductance,

resistance, transistor hFE and test diodes. It will also test

continuity with an audible buzzer.

Model 72-8155: OPERATING MANUAL

Inspection

Open the package case and take out the Meter. Check

the following items carefully to see if any items are missing

or damaged.

Item Description Qty

Operating Manual

Test Clip

9V Alkaline Battery (NEDA1604, 6F22

or 006P) (installed)

1 piece

1 pair

1 piece

In the event you find any items missing or damaged, please

contact your dealer immediately.

Safety Information

This Meter complies with the standards EMC EN61326.

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, and 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 7.

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

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 clips for damaged insulation or

exposed metal. Check the test clips for continuity.

Replace damaged test clips with identical model

number or electrical specifications before using the

Meter.

Do not apply voltage to the Meter.

The rotary switch should be placed in the correct

position and no change of range made during

measurement , to prevent damage to the Meter.

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.

Disconnect circuit power and discharge all high-

voltage capacitors before testing resistance,

continuity, capacitance or diodes.

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

Model 72-8155: OPERATING MANUAL

Remove test clips 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.

Remove the battery when not used for a prolonged

period to avoid damage to the Meter.

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 72-8155: OPERATING MANUAL

International Electrical Symbols

Ground

Double Insulated

Low Battery.

Continuity Test.

Diode.

Capacitance Test

Inductance Test

Fuse.

Warning. Refer to the Operating Manual.

Conforms to Standards of European Union.

Model 72-8155: OPERATING MANUAL

The Meter Structure (see figure 1)

1. LCD Display

2. L-C switch

3. Transistor Jack

4. Resistance, Diode and Continuity Input Terminal

5. Capacitance and Inductance Input Terminal

6. Rotary Switch

7. Power.

(figure 1)

Power

L-C

Model 72-8155: OPERATING MANUAL

Functional Buttons

The following table provides information regarding the

functional button operation.

Button Description

Press the Power down to turn the Meter on.

Press the Power again to turn the Meter power off.

Press L-C down to enter the Capacitance

measurement mode.

Press L-C up to enter the Inductance measurement

mode.

Model 72-8155: OPERATING MANUAL

Display Symbols (see figure 2)

(figure 2)

Data hold is active.

The battery is low.

Warning: To avoid false readings,

which could lead to possible electric shock

or personal injury, replace the battery as

soon as the battery indicator appears.

Transistor Test

Diode test

The continuity buzzer is on.

Farad. The unit of capacitance

pF: Picofarad. 1 x 10-12 or 0.000000000001

farads.

nF: Nanofarad. 1 x 10-9 or 0.000000001

farads.

µF: Microfarad.1 x 10-6 or 0.000001 farads.

mF: Millifarad. 1 x 10-3 or 0.001 farads.

: Ohm. The unit of resistance

k: kilohm. 1 x 103or 1000 ohms

M: Megaohm. 1 x 106or 1,000,000 ohms

H: Henry. The unit of Inductance.

mH: Millihenry. 1 x 10-3 or 0.001 henry.

No. Symbol Meaning

µF

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