FLIR IM75, User Manual

FLIR

IM75

USER

GUIDE

Document

Identifier:

IM75

‐

en

‐

US_AA

16

5.8

Earth

Bond

Resistance

Measurements

(ZERO

Ω

)

1.

Move

the

function

dial

to

the

Earth

‐

bond

resistance

position

(

ZERO

 Ω

);

the

Earth

‐

bond

resistance

icon

will

appear.

2.

Insert

the

black

probe

lead

into

the

COM

terminal

and

red

probe

lead

into

the

ZERO

Ohm

terminal.

3.

Before

testing,

short

the

ends

of

the

probes

and

press

the

MODE

button.

The

ZERO

icon

will

appear

on

the

display

and

the

offset

value

will

be

stored.

If

the

test

leads

are

not

shorted

or

if

there

is

residual

resistance,

the

display

will

show

the

>

2.00

ohms

(this

indication

could

be

due

to

faulty

leads,

improper

test

lead

insertion,

or

meter

problem.

Tests

should

not

be

attempted

until

root

cause

of

the

high

resistance

is

determined.

4.

Press

TEST

OK

to

run

a

test.

5.

To

lock

the

test

ON,

press

the

HOLD/LOCK

button

(the

LOCK

icon

will

appear)

and

then

press

TEST

OK

to

test

continuously.

6.

Press

TEST

OK

again

to

stop

the

test.

7.

Note

that

the

Earth

Bond

Resistance

Measurement

mode

can

also

be

used

to

measure

standard

resistance

to

40kohms

NOTE:

The

99

point

Data

Record

memory

function

cannot

be

activated

in

the

usual

way

while

using

the

Earth

Bond

Resistance

function

(since

the

TEST

OK

button

is

used

for

testing

in

this

case

and

not

for

saving

readings).

The

last

reading,

however,

is

held

on

the

display

and

can

then

be

saved

as

described

in

the

Extended

Functionality

section

below

under

Section

5.12.8

Data

Recording

Mode

.

5.9

Continuity

Test

Warning:

Do

not

do

diode,

resistance

or

continuity

tests

before

removing

the

power

from

capacitors

and

other

devices

under

test

during

a

measurement.

Injury

to

persons

can

occur.

1.

Set

the

function

switch

to

the

position.

2.

Insert

the

black

probe

lead

into

the

COM

terminal

and

red

probe

lead

into

the

V

terminal.

3.

Use

the

MODE

button

to

select

continuity

measurement.

The

indicator

will

be

displayed.

4.

Insert

the

black

probe

lead

into

the

COM

(negative)

terminal

and

the

red

probe

lead

into

the

positive

terminal.

5.

Touch

the

tips

of

the

probe

across

the

circuit

or

component

under

test.

6.

If

the

resistance

is

30

±

5

 Ω 

(nominal)

or

less,

the

meter

will

beep.

Note:

This

threshold

is

user

selectable

in

the

SET

UP

menu

under

the

Cntin

(continuity)

setting:

Range:

10

‐

50

 Ω

;

Increment:

1;

Default:

30

 Ω

.