Centech 69096 User manual

7
FUNCTION
DIGITAL
MULTIMETER
REV 12a
OPERATING INSTRUCTIONS
Visit
our
Web
site
at
http://www.harborfreight.com
Copyrigh
t°
2011
by Harbor Freight Tools®. A
ll
rights reserved.
No portion
of
this manual
or
any
artworkcontained herein
may
be
reproduced in
any
shape
or
form
wi
thout the express written consent
of
Harbor F
re
ight Tools.
For
technical
questions
and replacement parts, please call 1-800-444-3353

Spec
ifi
cat
ion
s
Frequency 45-450 Hz
DC Amps Ranges: 200µ
A/
20
00
µA/20mA/200mA, 1
OA
Accuracy (@200µA-200m
A)
1.2%±2D; (@10A)
3%±20
DC Voltage Ranges: 200mV/2000mV/20/200/1000V
Accuracy (@200mV) 0.5%
±10
;
(@2000mV-200V) 1.0%±1D;
(@1000V) 1.0
%±
20
AC Voltage Ranges: 200/75
0V
Accuracy (45-4
50
Hz) 1.2%±10D
Resistance Ranges: 200/2000/20K/200K/
20
00K Ohm
Accuracy (@200-200K Ohm) 0.8%±2D;
(@2000K Ohm) 1.0%±2D;
Sampling R
at
e 2.5
ti
mes/Second
Ov
erload Protection Fast-Acting 500mA/250V Fuse
Operating Temperature Range: 32° - 104
° F
Display
'!,"
high 3-
't,-
digit LCD
Batte
ry
One 9 V (included)
Weight .
45
lb.
Features 29-1/2" Test Leads,Transistor(NPN and PNP) Testing Function,
Batte
ry
Testing Function, and Automatic Pol
ar
i
ty
and Zero Ad
ju
st
Save This Manual
You
will need the manual for the safety warnings and
precautions, and operating and maintenance procedures.
Keep yourinvoice with this manual. Write the invoice number
on
the inside
of
the front cover. Keep the manual and invoice
in a safe and dry place forfuture reference.
Safety
Warnings
and Precautions
WARNING: When using too
l,
basic safety precautions should always
be followed to reduce the risk
of
personal injury and damage
to equipment.
Warnings
continued
on
page 3.
SKU 69096
For
replacement
parts,
please
call
1-800-444-3353. Page 2

Read all instructions before using this tester!
1.
Avoid working alone.
If
an
accident happens, an assistant can
bring help.
2. Keep work area clean. Cluttered areas invite injuries.
3. Avoid electrical shock. Use extreme caution when using this tool
nearuninsulated conductorsor bus bars. Prevent bodycontact with
grounded surfaces such as pipes, radiators, ranges, and cabinet
enclosures when testing voltages.
4. Avoid damaging meter. Use only as specified in this manual.
5. Observe work area conditions. Do not test voltages
in
damp or
wet locations. Don't expose to rain. Keep work area well lit.
6. Keep children away. Children must never be allowed in the work
area. Do not let them handle machine
s,
tools,
or
extension cords.
7.
Store idle equipment. When not in use, tools must be stored in a
drylocation to inhibit rust. Always lock up toolsand keep outofreach
of children.
8. Dress properly. Do not wear loose clothing orjewelry as they can
be caught in moving parts. Protective, electrically nonconductive
clothes and nonskidfootweararerecommended whenworking. Wear
restrictive haircovering to contain long hair.
9. Use eye protection. Always wearANSI approved
im
pact safety
goggles.
10. Do not overreach. Keep proper footing and balance at all times.
Do not reach over
or
across electrical cables
or
frames.
11.
Maintain tools with care. Ensure multimeter has a fresh battery.
In
spect test leads periodically and, ifdamaged, have them repaired
by an authorized technician.
12. Stay alert. Watch what you are doing, use common sense. Do not
operate any tool when you are tired.
13. Check for damaged parts. Before using any tool, any part that
appears damaged should be carefully checked to determine that it
will operate properlyand perform itsintended function.Checkfor any
broken parts and any other condition that may affect proper operation.
Any part that is damaged should be properly repaired
or
replaced
by a qualified technician. Do not use.the tool if any switch does not
operate properly.
SKU 69096 For replacement parts, please call 1-800-444-3353. Page 3

15.
Replacement
parts
and
accessories.
When servicing, use only
identical replacement parts. Use
of
any other parts will void the
warranty.
Only
use accessories intended
for
use with
this
tool.
Approved accessories are available from HarborFreight Tools.
16.
Do
not
operate
tool
if
under
the
influence
of
alcohol
or
drugs.
Read warning labels on prescriptions to determine
if
your judgment
or reflexes are impaired whiletaking drugs. Ifthere is
any
doubt, do
not operate the tool.
17.
We
recommend
that
only
a
licensed
electrician
work
on
high-
voltage
or
other
potentially
dangerous
circuits.
Note: Performance
of
thistool mayvarydepending
on
condition
of
internal
battery.
Warning: Thewarnings, cautions, and instructions discussed
in
this instruction manual cannot cover all possible
conditions and situations that mayoccur. It must
be
understood bythe operatorthatcommon sense and
caution are factors which cannot be built into this
product, but must be supplied by the operator.
Warning:
This
product
contains
or
produces
chemicals,
including lead, known to the State
of
California
to
cause cancerand birth defects (orotherreproductive
harm).
(California Health &Safety Code 25249.5
et
seq.)
Unpacking
When unpacking, make sure the following parts are included: Digital
Multimeter, and black and red
Te
stLeads. Ifanypartsaremissing
or
broken, please
call Harbor Freight Tools at the numberon the cover
of
this manual.
If
any part
of
the machine is missing or broken, please call Harbor Freight Tools
at
the number
on
the front cover as soon as possible.
Operation
WARNING:
ELECTRICAL
SHOCK
CAN
CAUSE
DEATH
OR
INJURY. AVOID TOUCHING EXPOSED CONDUCTORS
OF
ELECTRICITY.
Additional
Multimeter
Precautions
1.
Do not test voltage
on
AC circuits higher than
750
volts.
2.
Do not test voltage on
DC
circuits higherthan
1000
volts.
3.
Do not test current on circuits higherthan
10
amps.
SKU 69096 For replacement parts, please call 1-800-444-3353.
Page 4

4.
5.
Be
careful
not
to
apply
voltage
to
the
Test
Leads
when
they
are
connected
to
the
COM
(Bottom)
and
VOmA
(Center)
Jacks
and
the
Multimeter
is
in
an
Ohms
testing
setting.
Damage
DC
Volt
Selection
Area
Ohm
Selection
Area
Transistor
/hFE
Jack
can
occur
to
the
multimeter
or
the
fuse
may
blow.
Do
not
switch
between
testing
modes
with
the
multimeter
connected
to
a
circuit.
Control Layout
Battery
li
~
::=:==:=\C::li~~~~~
Test
Selection
Area
DC
AMP
Selection
Area
10A
Selection
Area/Jack
Transistor
Selection
Area
...._:===i~~~
..-----.
Volt/Ohm/
mAJack
AC Voltage Measurements
MeasureAC conductors carrying up to 750
VAC,
45-450 Hz.
1.
Turn the Range Selector Switch to 750 ACV setting.
Always start with
the
highest range
if
the voltage is unknown.
2. Plug the red lead into the
VOmA
(Center) Jack. Plug the black lead into
the COM (Bottom) Jack. Switch the Multimeter ON.
3.
Carefullytouchthe exposed conductorswith the tips ofthe probes
to
measure
the voltage (not amperes).
4.
Read
measurement.
Ifthe voltage is less than 200 volts, set the Range Selector Switch to the
lower range.
5.
When testing
is
complete, remove Test Leads and store with multimeter.
DC Voltage Measurements
Measure
DC
conductors carrying up.to 1000 VDC.
1. Turn the Range Selector Switch to 1000 DCV setting.
2.
Follow the directions above under "AC Voltage Measurements", only use
the DC settings instead.
SKU 69096
For
replacement parts, please call 1-800-444-3353.
Pages

DC Current Measurements
Measure DC conductors carrying
up
to
10
amperes. ·
1.
Turn the Range Selector Switch to the 10Aposition.
Always
start
with
the
highest
range
if
the amperage
is
_unknown.
2.
Plug the red lead into the 1
OA
(Top)
Jack. Plug the black lead into the
COM
(Bottom)
Ja
ck. Switch the Multimeter ON.
3.
Carefullytouch
the
exposed conductors with the tips ofthe probes tomeasure
the amperage.
Note: Amperage is always
tested
in series
with
the
circuit
under
test.
4. Read measurement.
If
the reading is lessthan .2AMPs, switchthe red lead to the VOmA(Center)
Jack and set the Range Selector Switch to the 200 mA setting.
5.
When testing is complete, remove Test Leads and store with multimeter.
Resistance Measurements
Measure circuit resistance
up
to 2000K Ohms.
WARNING: NEVER measure resistance on a circuit with voltage running
through it.
1.
Turn the Range Selector Switch to the 200
mA
position.
2.
Plug the red Test Lead into the
VOmA
(Center) Jack. Plug the black Test
Lead into the Com (Bottom) Jack. Switch the MultimeterON.
Short the Test Leads together. The meter should read
"O"
Ohms.
3. Touch the exposed conductors with theJips ofthe Test Leads.
4. Read measurement.
Ifthe reading
is
"1", setthe Range Selector Switch to the next higher Ohm
(0)
position.
Transistor
(hFE)
Measurements
Test transistors to ensure proper function.
1.
Turn the Range Selector Switch to the hFE position.
Switch the Multimeter
ON
.
2.
Insert the transistor pins into the appropriate hFE jack (NPN or PNP)
according to the EBC (Emitter, Base, Collector) sequence.
3.
The meterwill show the approximate hFE value.
Diode Measurement
Test
the voltage drop in diodes.
1.
Turn the Range Selector Switch to the Diode (
......
) position.
2.
Plug the red Test
Le
ad into the VOmA (Center) Jack. Plug the black Test
Lead into the Com (Bottom) Jack. Switch the MultimeterON.
3. Connectthe
red
probeto the anodeofthe diode
an
d the blacktothe cathode.
SKU
69096
For
replacementparts, please call 1-800-444-3353. Page 6

4. The approximate forward voltage drop
of
the diode will be displayed in
mV.
If
the conneCtion is reversed only "1" will be shown.
Battery Charge Measurement
Test the amount
of
charge left in batteries.
NOTE: This setting is for testing the charge of small 9V
or
1.
SV
batteries
2D.bl·
~
use this setting to test automotive or lead-acid batteries.
The high current could cause damage to the meter and/or cause severe
personal injury. Use the appropriate DC Voltage setting to test the open
current voltage ofsuch batteries instead.
1.
Turn the Range Selector Switch to the Battery H
1-)
position.
2.
Plug the red Test Lead into the VOmA (Center) Jack. Plug the black Test
Lead into the Com (Bottom) Jack. Switch the Multimeter
ON.
3.
Connect the red probe to the positive terminal
of
the battery and the black
to the negative terminal.
4. The battery amperage under a load
of
370
mO
will be displayed to a
resolution
of
.1
mA.
5.
Normal amperage: For a standard
9V
(6LR61) battery = 25
mA
For a 1.5 V "AA" (LR6) battery = 4
mA
Maintenance
1.
Wipe unit with a slightly damp cloth using a light detergent.
Do
not use
solvents
or
abrasives.
2.
Remove battery
if
not
in
use for long periods.
3.
Store
un
it in a dry location.
4.
Otherthan the batteryand fuse, there are
no
replaceable parts on this unit.
Repairs should
be
done by a qualified technician.
Battery/Fuse Replacement
To replace the battery
or
fuse:
1.
Remove the Test Leads from the multimeter.
2.
Turn the unit over.
3.
Remove both screws using a cross head screwdriver.
4.
Remove back cover.
5.
Pull battery/fuse out
of
un
it and replace with the same.
(9V battery or 500mA/250V fast-acting fuse)
6.
Replace cover and retighten screws.
NOTE: No replacement parts are available for this tool.
SKU 69096 For replacement parts, please call 1-800-444-3353. Page 7