Craftsman 19741 User manual

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Owner's

Manual

AC/DC

True

RMS

Clamp

Meter

Model

No.

19741

CAUTION:

Read,

understand

and

e

Safety

follow

Safety

Rules

and

Operating

e

Operation

Instructions

in

this

manual

before

e

Maintenance

using

this

product.

e

Espajiol

©

Sears,

Roebuck

and

Co.,

Hoffman

Estates,

IL

60179

U.S.A

www.craftsman.com

012318

TABLE

OF

CONTENTS

Warranty

Safety

Instructions

Safety

Symbols

Control

and

Jacks

Symbols

and

Annunciators

Specifications

Operating

Instructions

AC

Current

Measurements

DC

Current

Measurements

AC

Voltage

Measurements

DC

Voltage

Measurements

Non-Contact

Voltage

Detector

Resistance

Measurements

Continuity

Measurements

Diode

Testing

Capacitance

Measurements

Frequency/Duty

Cycle

Measurements

Temperature

Measurements

Auto

Power

Off

Auto/Manual

Ranging

Data

Hold

Backlight

Mode

Relative

Maintenance

Battery

Replacement

Troubleshooting

Page

3

aon

11

11

11

d2

12

12

13

13

14

14

15

15

16

16

16

16

16

17

18

18

to)

CRAFTSMAN

LIMITED

WARRANTY

FOR

TWO

YEARS

from

the

date

of

sale

this

product

is

warranted

against

any

defects

in

material

or

workmanship.

WITH

PROOF

OF

SALE

a

defective

product

will

be

replaced

free

of

charge.

This

warranty

does

not

cover

batteries,

which

are

expendable

parts

that

can

wear

out

from

normal

use

within

the

warranty

period.

This

TWO

YEAR

warranty

is

void

if

this

product

is

ever

used

while

providing

commercial

service

or

if

rented

to

another

person.

For

90

DAY

commercial

and

rental

use

terms,

see

the

Craftsman

warranty

web

page.

This

warranty

gives

you

specific

legal rights,

and

you

may

also

have

other

rights

which

vary

from

state

to

state.

Sears

Brands

Management

Corporation,

Hoffman

Estates,

IL

60179

For

Customer

Assistance

Call

9am

-

5pm

(ET)

Monday

through

Friday

800-906-6002

WARNING:

USE

EXTREME

CAUTION

IN

THE

USE

OF

THIS

DEVICE.

Improper

use

of

this

device

can

result

in

injury

or

death.

Follow

all

safeguards

suggested

in

this

manual

in

addition

to

the

normal

safety

precautions

used

in

working

with

electrical

circuits.

DO

NOT

service

this

device

if

you

are

not

qualified

to

do

so.

SAFETY

INSTRUCTIONS

This

meter

has

been

designed

for

safe

use,

but

must

be

operated

with

caution.

The

rules

listed

below

must

be

carefully

followed

for

safe

operation.

1.

NEVER

apply

voltage

or

current

to

the

meter

that

exceeds

the

specified

maximum:

Input

Limits

Function

Maximum

Input

V

DC,

VAC,

Frequency,

Duty

Cycle

600V

DC/AC

AAC,

ADC

400A

DC

/

AC

Resistance

,

Diode

test

,

Continuity

250V

DC/AC

Capacitance

Temperature(°F/‘C

)

250V

DC/AC

2.

USE

EXTREME

CAUTION

when

working

with

high

voltages

3.

DO

NOT

measure

voltage

if

the

voltage

on

the

"COM"

input

jack

exceeds

240V

above

earth

ground

4.

DONOT

measure

current

of

circuits

whose

voltage

is

greater

than

240V

above

earth

ground

5.

NEVER

connect

the

meter

leads

across

a

voltage

source

while

the

function

switch

is

in

the

resistance

or

diode

mode.

Doing

so

can

damage

the

meter

6.

ALWAYS

turn

off

the

power

and

disconnect

the

test

leads

before

opening

the

doors

to

replace

the

fuse

or

batteries

7.

NEVER

operate

the

meter

unless

the

back

cover

is in

place

and

fastened

securely

AN

SAFETY

SYMBOLS

This

symbol

adjacent

to

another symbol,

terminal

or

operating

device

indicates

that

the

operator

must

refer

to

an

explanation

in

the

Operating

Instructions

to

avoid

personal

injury

or

damage

to

the

meter

This

WARNING

symbol

indicates

a

potentially

hazardous

situation,

which

if

not

avoided,

could

result

in

death

or

serious

injury

This

CAUTION

symbol

indicates

a

potentially

hazardous

situation,

which

if

not

avoided,

may

result

in

damage

to

the

meter

This

symbol

advises

the

user

that

the

terminal(s)

so

marked

must

not

be

connected

to

a

circuit

point

at

which

the

voltage,

with

respect

to

earth

ground,

exceeds

(in

this

case)

600

VAC

or

VDC

This

symbol

adjacent

to

one

or

more

terminals

identifies

them

as

being

associated

with

ranges

that

may,

in

normal

use,

be

subjected

to

particularly

hazardous

voltages.

For

maximum

safety,

the

meter

and

its

test

leads

should

not

be

handled

when

these

terminals

are

energized

This

symbol

indicates

that

a

device

is

protected

throughout

by

double

insulation

or

reinforced

insulation

CONTROLS

AND

JACKS

Current

clamp

Non-Contact

AC

Voltage

Indicator

Light

Clamp

Trigger

Rotary

Function

dial

Data

HOLD/Back

light

button

Relative

button

LCD

display

MODE

select

button

.

RANGE

button

10.

Hz/%

hold

button

11.

COM

input

jack

12.

VIQ

CAP

TEMP

Hz

jack

13.

Battery

Cover

(Back

side)

OSS

oe

BE

Ue

ests

1.

AC

Alternating

current

/

DC

Direct

Current

2.

Minus

sign

3.

4000

Count

Display

(0-399)

4,

AUTO

AutoRange

mode

5,

ZERO

Relative

Mode

6.

DIODE

TEST

MODE

7,

AUDIBLE

CONTINUITY

8,

DATA

HOLD

MODE

9.

°C,

°F,u,

m,

V,

A,

K,

M,

Q

-

Units

of

measure

10.

Hz

%

-

Frequency/duty

cycle

test

mode

)

©O®

©

@

a

_

AUTO-Dt-))

HOLD ZERO

kMQHz/F

V

SPECIFICATIONS

Function

Range

&

Resolution

Accuracy

(%

of

reading)

40.00

AAC

+

(2.5

%

+ 8

digits)

AC

Current

:

=

(True

RMS)

400

.OAAC

£(2.8%+5

digits)

een

All

AC

current

ranges

are

specified

from

5%

of

range

to

100%

of

range

40.00

ADC

+

(2.5

%

+5

digits)

DC

Current

=

400

.OADC

+

(2.8

%

+5

digits)

400.0

mVDC

+

(0.8%

+ 2

digits)

4.000

VDC

DC

Voltage

|

40.00

VDC

9

is

4000

VDC

+

(1.5%

+

2digits)

600VDC

+(2%

+2

digits)

400.0mVAC

+

(1.5%

+

30

digits)

AC

Voltage

eC

£

(1.5%

+ 8

digits)

oO

igi

ree)

[aOR

}

400.0

VAC

600

VAC

+

(2.0%

+

8

digits)

AIlAC

Voltage

ranges

are

specified

from

5%

of

range

to

100%

of

range

400.0

&

+

(1.0%

+

4

digits)

4.000K

2

Resistance

aoe

-

+

(1.5%

+

2

digits)

4.000M

2

+

(2.5%

+ 3

digits)

40.00M2

+

(3.5%

+ 5

digits)

Capacitance

|

40.00nF

+(4.0%

reading

+

20

digits)

400.0nF

4.000

1

F

+(3%

reading

+

5

digits)

40.00

uF

100.0

uF

+(4.0%

reading

+

10

digits)

Frequency

10-10kHz

Sensitivity:100V(<50Hz);50V(50

to

400Hz;15V(401Hz

to

10kHz)

+(1.5%

reading

+ 2

digits)

not

included)

Temp

-20.0

to

760.0°C

+

(3%rdg+5°C)

(type-K)

-4,0

to1400.0°F

+

(3%rdg+9°F)

(probe

accuracy

NOTE:

Accuracy

specifications

consist

of

two

elements:

*

(%

reading)

This

is

the

accuracy

of

the

measurement

circuit.

e

(+

digits)

This

is

the

accuracy

of

the

analog

to

digital

converter

NOTE:

Accuracy

is

stated

at

65°F

to

83°F

(18°C

to

28°C)

and

less

than

70%

RH

Clamp

size

Diode

Test

Continuity

Check

Temperature

sensor

Input

Impedance

Display

AC

V

bandwidth

AC

A

bandwidth

AC

response

Operating

Temperature

Storage

Temperature

Operating

Humidity

Storage

Humidity

Operating

Altitude

Over

voltage

Battery

Auto

OFF

Dimensions/Weight

Safety

Opening

1.5"

(38mm)

approx.

Open

circuit

voltage

<1.5V

DC;

Test

current

0.3mA

(typical)

Audible

signal

<150Q;

Test

current

<

0.5mA

Type

K

thermocouple

10MQ

(VDC

and

VAC)

3-3/4

digits

(4000

counts)

LCD

50Hz

to

400Hz

50/60Hz

True

RMS

41

to

104°F

(5

to

40°C)

-4 to

140°F

(-20

to

60°C)

Max

80%

up

to

87°F

(31°C)

decreasing

linearly

to

50%

at

104°F

(40°C)

<80%

7000ft.

(2000

meters)

maximum

Category

III

600V

(1)

9V

Battery

approx.

30

minutes

7.78x2.64x1.64"

meter

only

(199.93x68.07x41.73mm)

8.2440z.

(233.7g)

mete

only

without

battery

This

meter

is

intended

for

indoor

use

and

protected,

against

the

users,

by

double

insulation

per

EN61010-1

and

1EC61010-1

2nd

Edition

(2001)

to

CAT

Ill

600V;

Pollution

Degree

2.

The

meter

also

meets

UL

61010-1,

Second

Edition

(2004),

CAN/CSA

C22.2

No.

61010-1,

Second

Edition

(2004),

and

UL

61010B-

2-031,

First

Edition

(2003)

UL

LISTED

The

UL

mark

does

not

indicate

that

this

product

has

been

evaluated

for

the

accuracy

of

its

readings

PER

IEC1010

OVERVOLTAGE

INSTALLATION

CATEGORY

OVERVOLTAGE

CATEGORY

!

Equipment

of

OVERVOLTAGE CATEGORY

|

is

equipment

for

connection

to

circuits

in

which

measures

are

taken

to

limit

the

transient

overvoltages

to

an

appropriate

low

level.

Note

—

Examples

include

protected

electronic

circuits.

OVERVOLTAGE

CATEGORY

II

Equipment

of

OVERVOLTAGE

CATEGORY

II

is

energy-

consuming

equipment

to

be

supplied

from

the

fixed

installation.

Note

—

Examples

include

household,

office,

and

laboratory

appliances.

OVERVOLTAGE

CATEGORY

III

Equipment

of

OVERVOLTAGE

CATEGORY

III

is

equipment

in

fixed

installations.

Note

—

Examples

include

switches

in

the

fixed

installation

and

some

equipment

for

industrial

use

with

permanent

connection

to

the

fixed

installation.

OVERVOLTAGE

CATEGORY

IV

Equipment

of

OVERVOLTAGE

CATEGORY

IV

is

for

use

at

the

origin

of

the

installation.

Note

—

Examples

include

electricity

meters

and

primary

over-

current

protection

equipment

10

OPERATING

INSTRUCTIONS

Notice:

Read

and

understand

all

WARNING

and

CAUTION

statements

listed

in

the

safety

section

of

this

operation

manual

prior

to

using

this

meter.

Set

the

function

select

switch

to

the

OFF

position

when

the

meter

is

not

in

use.

NOTES:

1.

ALWAYS

turn

the

rotary

function

switch

to

the

OFF

position

when

the

meter

is

not

in

use

2.

If

“OL”

appears

in

the

display

during

a

measurement,

the

value

exceeds

the

range

you

have

selected.

Change

to

a

higher

range

DC/AC

CURRENT

MEASUREMENTS

WARNING:

Disconnect

the

test

leads

from

the

meter

before

making

current

clamp

measurements.

1.

Set

the

Function

switch

to

the

400ADC,

40ADC,

400AAC

or

40AAC

range.

If

the

range

of

the

measured

current

is

not

known,

select

the

higher

range

first

then

move

to

the

lower

range

if

necessary.

2.

For

DC

current

measurement,

press

the

ZERO

key

to

null

the

meter

display.

3.

Press

the

trigger

to

open

jaw.

Fully

enclose

one

conductor

to

be

measured.

Note:

Do

not

put

more

than

one

wire

inside

the

current

clamp.

The

clamp

meter

LCD

will

display

the

reading.

=

11

DC/AC

VOLTAGE

MEASUREMENTS

WARNING:

Risk

of

Electrocution.

The

probe

tips

may

not

be

long

enough

to

contact

the

live

parts

inside

some

240VAC

outlets

for

appliances

because

the

contacts

are

recessed

deep

in

the

outlets.

As

a

result,

the

reading

may

show

0

volts

when

the

outlet

actually

has

voltage

on

it.

Make

sure

the

probe

tips

are

touching

the

metal

contacts

inside

the

outlet

before

assuming

that

no

voltage

is

present.

CAUTION:

Do

not

measure

DC

or

AC

voltages

if

a

motor

on

the

circuit

is

being

switched

ON

or

OFF.

Large

voltage

surges

may

occur

that

can

damage

the

meter.

1.

Set

the

rotary

function

switch

to

the

Volts/Hz/%

position.

2.

Insert

the

black

test

lead

banana

plug

into

the

negative

(COM)

jack

and

the red

test

lead

banana

plug

into

the

positive

(V/Q/Temp)

jack

Select

AC

or

DC

with

the

MODE

button

Connect

the

test

leads

to

the

circuit

under

test

5.

Read

the

voltage

on

the

display.

The

display

will

indicate

the

proper

decimal

point

and

value.

a

Non-Contact

Voltage

Detection

(NCV)

-

“This

model

has

a

built

in

NCV

tester.

To

operate,

switch

dial

to

V-AC

and

hold

the

top

section

of

the

clamp

to

the

area

where

you

would

like

to

detect

voltage.

If

voltage

is

present,

the

light

indicator

at

the

top

of

the

Clamp

meter

housing

will

light.

WARNING:

Be

sure

to

test

the

NCV

Detector

on

a

known

source

of

AC

voltage

before

testing.

Also,

when

testing,

if

the

NCV

light

indicator

does

not

light,

this

does

not

mean

that

Voltage

is

not

present.

Bb

cautious

and

re-confirm

with

the

test

leads

to

measure

voltage.

12

RESISTANCE

MEASUREMENTS

WARNING:

To

avoid

electric

shock,

disconnect

all

power

to

the

unit

under

test,

remove

the

batteries,

unplug

the

line

cords

and

discharge

all

capacitors

before

taking

any

resistance

measurements.

le

2.

4.

Set

the

function

switch

to

the

Q

+

°)))

CAP

position.

Insert

the

black

test

lead

banana

plug

into

the

negative

(COM)

jack

and

the red

test

lead

banana

plug

into

the

positive

(V/Q/Temp)

jack

Touch

the

test

probe

tips

across

the

circuit

or

part

under

test.

It

is

best

to

disconnect

one

side

of

the

part

under

test

so

the

rest

of

the

circuit

will

not

interfere

with

the

resistance

reading

Read

the

resistance

in

the

display

CONTINUITY

CHECK

WARNING:

To

avoid

electric

shock,

never

measure

continuity

on

circuits

or

wires

that

have

voltage

on

them.

—_

Set

the

function

switch

to

the

Q

Pt

*)))

CAP

position.

Push

the

mode

button

to

indicate

¢)))

on

the

display.

Insert

the

black

lead

banana

plug

into

the

negative

(COM)

jack

Insert

the red

test

lead

banana

plug

into

the

positive

(VQ)

jack.

Touch

the

test

probe

tips

to

the

circuit

or

wire

you

wish

to

check.

If

the

resistance

is

less

than

approximately

150Q,

the

audible

signal

will

sound.

If

the

circuit

is

open,

the

display

will

indicate

Olea

13

DIODE

TEST

WARNING:

To

avoid

electric

shock,

do

not

test

any

diode

that

has

voltage

on

it.

1.

Tur

the

rotary

switch

to

the

QQ

-Pt

*)))

CAP

position.

Insert

the

black

test

lead

banana

plug

into

the

negative

(COM)

jack

and

the

red

test

lead

banana

plug

into

the

positive

(VQ)

jack.

3.

Push

the

mode

button

to

indicate

>}

on

the

display.

4.

Touch

the

test

probes

to

the

diode

under

test.

Typically

for

a

normal

diode,

forward

voltage

will

indicate

0.4V

to

0.7V.

Reverse

voltage

will

indicate

“OL”.

Shorted

devices

will

indicate

near

OV

and

an

open

device

will

indicate

“OL”

in

both

polarities.

CAPACITANCE

MEASUREMENTS

WARNING:

To avoid

electric

shock,

discharge

the

capacitor

under

test

before

measuring.

1.

Set

the

function

switch

to

the

Q

Pt

*)))

CAP

position.

2.

Push

the

mode

button

to

indicate

nF

on

the

display.

3.

Insert

the

black

lead

banana

plug

into

the

negative

(COM)

jack

and

insert

the red

test

lead

banana

plug

into

the

positive

(VQTemp)

jack.

4.

Press

the

ZERO

key

to

null

the

meter

display.

Touch

the

test

probe

tips

to

the

capacitor

you

wish

to

check.

6.

Read

the

capacitance

value

on

the

display.

co)

14

FREQUENCY

or

%

DUTY

CYCLE

MEASUREMENTS

+

2

3.

4.

5.

Turn

the

rotary

switch

to

the

Volts

Hz

%

position.

Insert

the

black

test

lead

banana

plug

into

the

negative

(COM)

jack

and

the

red

test

lead

banana

plug

into

the

positive

(VQ)

jack.

Select

Hz

or

%

with

the

HZ/%

button.

Touch

the

test

probe

tips

to

the

circuit

under

test.

Read

the

frequency

on

the

display.

TEMPERATURE

MEASUREMENTS

WARNING:

To avoid

electric

shock,

disconnect

both

test

probes

from any

source

of

voltage

before

making

a

temperature

measurement.

Turn

the

rotary

switch

to

the

Temp

position.

Insert

the

Temperature

Probe

into

the

negative

(COM)

and

the

(VQTemp)

jacks,

making

sure

to

observe

correct

polarity.

Select

°C

or

°F

with

the

MODE

button.

Touch

the

temperature

probe

head

to

the

part

whose

temperature

you

wish

to

measure.

Keep

the

probe

touching

the

part

under

test

until

the

reading

stabilizes.

Read

the

temperature

on

the

display.

Warning:

To

avoid

electrical

shock,

be

sure

the

thermocouple

has

been

removed

before

changing

to

another

measurement

function.

15

AUTO

POWER

OFF

To

extend

the

battery

life,

the

meter

will

enter

the

sleep

mode

after

30

minutes

of

continuous

use.

Turn

the

function

switch

to

the

OFF

position

to

shut

the

meter

OFF

and

then

to

the

needed

function

to

resume

operation.

AUTO/MANUAL

RANGING

The

meter

turns

on

in

Autoranging

mode.

Press

the

RANGE

button

to

enter

manual

ranging.

Each

press

of

the

range

button

will

step

to

the

next

range

as

indicated

by

the

units

and

decimal

point

location.

Press

and

hold

the

RANGE

button

for

two

seconds

to

return

to

Autoranging

mode.

Note:

Manual

ranging

does

not

function

in

AC

Current

or

Diode

and

Continuity

check

functions.

In

Temperature

function,

it

will

change

the

resolution

from

0.1°

to

1°.

DATA

HOLD

To

freeze

the

LCD

meter

reading,

press

the

HOLD

button.

While

data

hold

is

active,

the

HOLD

display

icon

appears

on

the

LCD.

Press

the

HOLD

button

again

to

return

to

normal

operation.

BACKLIGHT

Press

and

hold

the

HOLD

button

for

>2

seconds

to

turn the

backlight

on/off.Note:

The

HOLD

feature

will

activate

when

the

backlight

is

turned

on.

Press

the

HOLD

button

again

to

exit

the

Hold

feature.

MODE

To

switch

the

meter

from

DC

and

AC

Voltage,

press

the

MODE

button.

Also,

to

switch

the

meter

setting

from

Ohm’s

to

Diode/Continuity

Check

press

the

MODE

button.

to

switch

the

meter

setting

from

°F

to

‘C

Check

press

the

MODE

button.

16

REL

The

relative

button

allows

the

user

to

store

a

measurement,

then

make

additional

measurements

in

comparison.

To

use,

first

that

the

measurement

that

you

want

to

use

as

a

reference.

Press

the

relative

button

to

store.

Now,

when

taking

additional

measurements,

each

additional

reading

will

show

the

difference

between

the

stored

measurement

and

the

new

measurement.

To

escape

the

relative

mode,

either

turn

off

the

meter

or

press

the

relative

button

for

2

seconds

while

the

relative

measurement

is

erased.

17

MAINTENANCE

WARNING:

To

avoid

electric

shock,

do

not

operate

your

meter

until

all

covers

are

in

place

and

fastened

securely.

This

meter

is

designed

to

provide

years

of

dependable

service,

if

the

following

care

instructions

are

performed:

1.

KEEP

THE

METER

DRY.

If

it

gets

wet,

wipe

it

off.

2.

USE

AND

STORE

THE

METER

IN

NORMAL

TEMPERATURES.

Temperature

extremes

can

shorten

the

life

of

the

electronic

parts

and

distort

or

melt

plastic

parts.

3.

HANDLE

THE

METER

GENTLY

AND

CAREFULLY.

Dropping

it

can

damage

the

electronic

parts

or

the

case.

4.

KEEP

THE

METER

CLEAN.

Wipe

the

case

occasionally

with

a

damp

cloth.

DO

NOT

use

chemicals,

cleaning

solvents,

or

detergents.

REPLACING

THE

BATTERIES

WARNING:

To

avoid

electric

shock,

disconnect

the

test

leads

from any

source

of

voltage

before

removing

the

battery

door.

1.

When

the

batteries

become

exhausted

or

drop

below

the

operating

voltage,

the

low

battery

indicator

will

appear

in

the

LCD

display.

The

batteries

should

then

be

replaced.

2.

Disconnect

the

test

leads

from

the

meter.

3.

Open

the

battery

door

by

removing

the

rear

screws

using

a

Phillips

head

screwdriver.

4.

Insert

the

batteries

into

battery

holder.

Put

the

battery

door back

in

place.

Secure

with

the

screws.

On

.

Dispose

of

the

old

batteries

properly.

WARNING:

To

avoid

electric

shock,

do

not

operate

the

meter

until

the

battery

door

is in

place

and

fastened

securely.

NOTE:

If

your

meter

does

not

work

properly,

check

the

battery

ensuring

that

it

is

still

good

and

properly

inserted.

18

TROUBLESHOOTING

There

may

be

times

when

your

meter

does

not

operate

properly.

When

this

occurs,

check

the

following:

Meter

Does

Not

Operate

1.

Review

all

the

instructions

in

this

manual.

2.

Check

to

be

sure

the

battery

is

properly

installed.

3.

Check

to

be

sure

the

battery

is

good.

4.

If

the

battery

is

good

and

the

meter

still

does

not

operate,

check

to

be

sure

that

both

ends

of

the

fuse

are

properly

installed.

If

You

Need

Assistance

Understanding

How

the

Meter

Works

Call

our

Customer

Service

Line

1-800-906-6002.

19