Owner's Manual
Manual Ranging
Multimeter
Model No.
82337
CAUTION: Read, understand and
follow Safety Rules and Operating
Instructions in this manual before
using this product.
• Safety
• Operation
• Maintenance
• Español
© Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.
www.craftsman.com
061906
TABLE OF CONTENTS
Warranty
Page 3
Safety Instructions
4
Safety Symbols
5
Control and Jacks
6
Symbols and Annunciators
6
Specifications
7
Battery Installation
9
Operating Instructions
10
DC Voltage Measurements
10
AC Voltage Measurements
11
DC Current Measurements
12
AC Current Measurements
13
Resistance Measurements
14
Continuity Measurements
15
Diode Test
15
Temperature Measurements
16
Display Backlight
17
Battery Check
17
Data Hold
17
Auto Power Off
17
Low Battery Indication
17
Blown Fuse Indication
17
Wrong Connection Indication
17
Maintenance
18
Battery Replacement
19
Fuse Replacement
19
Troubleshooting
21
Service and Parts
21
2
ONE YEAR FULL WARRANTY
ONE YEAR FULL WARRANTY ON CRAFTSMAN PROFESSIONAL
MULTIMETER
If this CRAFTSMAN Professional Multimeter fails to give complete
satisfaction within one year from the date of purchase, RETURN IT TO
THE NEAREST SEARS STORE OR OTHER CRAFTSMAN OUTLET IN
THE UNITED STATES, and Sears will replace it, free of charge.
This warranty gives you specific legal rights, and you may also have
other rights which vary from state to state.
Sears, Roebuck and Co., Dept. 817WA, Hoffman Estates, IL 60179
For Customer Assistance Call 9am - 5pm (ET)
Monday through Friday 1-888-326-1006
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.
3
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
V DC or V AC
mA AC/DC
A AC/DC
Resistance, Diode Test,
Continuity
Temperature
Maximum Input
600V DC/AC, 200Vrms on 200mV
range
200mA 250V fast acting fuse
20A 250V fast acting fuse(30
seconds max every 15 minutes)
250Vrms for 15sec max
60V DC/24V AC
2.
USE EXTREME CAUTION when working with high voltages
3.
DO NOT measure voltage if the voltage on the "COM" input
jack exceeds 600V above earth ground
4.
DO NOT measure current of circuits whose voltage is greater
than 600V 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 cover to replace the battery
7.
NEVER operate the meter unless the back cover is in place
and fastened securely
4
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.
WARNING
This WARNING symbol indicates a potentially
hazardous situation, which if not avoided,
could result in death or serious injury.
CAUTION
This CAUTION symbol indicates a potentially
hazardous situation, which if not avoided, may
result damage to the product.
MAX
600V
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.
5
CONTROLS AND JACKS
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Rubber holster
2000 count LCD display
Degrees F button
Degrees C button
Function switch
mA, uA and A input jacks
COM input jack
Positive input jack
Battery check button
Hold button
Backlight button
Note: Tilt stand and battery compartment are on rear of unit.
SYMBOLS AND ANNUNCIATORS
•)))
Continuity
Diode test
Battery status
!
m
k
M
V
AC
DC
!
HOLD
Test lead connection
error
-6
micro (10 ) (amps)
-3
milli (10 ) (volts, amps)
3
kilo (10 ) (ohms)
6
mega (10 ) (ohms)
Volts
Alternating current
Direct current
Ohms
Data hold
ºF
Degrees Fahrenheit
ºC
Degrees Centigrade
A
6
Amps
SPECIFICATIONS
Function
DC Voltage
(V DC)
AC Voltage
(V AC)
Range
200mV
2V
200V
600V
2V
200V
600V
DC Current
(A DC)
AC Current
(A AC)
200µA
200mA
20A
200mA
20A
Resistance
200!
2000!
20k!
200k!
20M!
Temperature -4 to
1382ºF
-20 to
750ºC
Resolution
Accuracy
0.1mV
±(0.3% reading + 2 digits)
0.001V
±(0.5% reading + 2 digits)
0.1V
1V
±(0.8% reading + 2 digits)
50 to 400Hz 400Hz to 1kHz
0.001V ±(1.0% reading ±(2.0% reading
+6 digits
+ 8 digits
0.1V
±(1.5% reading ±(2.5% reading
+6 digits
+8 digits
1V
±(2.0% reading ±(3.0% reading
+6 digits
+8 digits
0.1µA
±(1.5% reading + 3 digits)
0.1mA
0.01A
±(2.5% reading + 3 digits)
50 to 400Hz
400Hz to 1kHz
0.1mA
±(1.8% reading ±(2.5% reading
+8 digits
+10 digits)
0.01A
±(3.0% reading ±(3.5% reading
+8 digits)
+10 digits)
0.1!
±(0.8% reading +4 digits)
1!
±(0.8% reading +2 digits)
0.01k!
±(1.0% reading +2 digits)
0.1k!
0.01M! ±(2.0% reading +5 digits)
1ºF
±(3.0% reading +3 digits)
(meter only, probe accuracy not
1ºC
included)
NOTE: Accuracy specifications consist of two elements:
• (% reading) – This is the accuracy of the measurement circuit.
• (+ digits) – This is the accuracy of the analog to digital
converter.
o
o
o
o
NOTE: Accuracy is stated at 65 F to 83 F (18 C to 28 C) and less
than 75% RH.
7
Diode Test
Continuity Check
Input Impedance
AC Response
ACV Bandwidth
DCA voltage drop
Display
Auto-Power Off
Overrange indication
Polarity
Measurement Rate
Low Battery Indication
Battery
Fuses
Operating Temperature
Storage Temperature
Operating Humidity
Storage Humidity
Operating Altitude
Weight
Size
Safety
Test current of 1mA maximum, open
circuit voltage 2.8V DC typical
Audible signal will sound if the
resistance is less than
approximately 150!
10M!
Average responding
50Hz to 1kHz
200mV
3 " digit, 2000 count LCD, 0.9”
digits
15 minutes
“1” is displayed
Automatic (no indication for positive
polarity); Minus (-) sign for negative
polarity.
2 times per second, nominal
“
” is displayed if battery voltage
drops below operating voltage
One 9 volt (NEDA 1604) battery
mA, #A ranges; 0.2A/250V fast blow
A range; 20A/250V ceramic fast
blow
41ºF to 104ºF (5ºC to 40ºC)
o
o
o
o
-4 F to 140 F (-20 C to 60 C)
Max 80% up to 87ºF (31ºC)
decreasing linearly to 50% at 104ºF
(40ºC)
<80%
7000ft. (2000) meters maximum.
0.661lb (300g) (includes holster).
7.36” x 3.2” x 2.0” (187 x 81 x
50mm) (includes holster)
For indoor use and in accordance
with the requirements for double
insulation to IEC1010-1 (1995):
EN61010-1 (1995) Overvoltage
Category III, Pollution Degree 2.
8
BATTERY INSTALLATION
WARNING: To avoid electric shock, disconnect the test leads
from any source of voltage before removing the battery cover.
1. Disconnect the test leads from the meter.
2. Remove the rear battery cover by removing the two screws
using a Phillips head screwdriver.
3. Insert the battery into battery clips, observing the correct
polarity.
4. Put the battery cover back in place and secure with the two
screws.
WARNING: To avoid electric shock, do not operate the meter
until the battery cover is in place and fastened securely.
NOTE: If your meter does not work properly, check the fuses and
battery to make sure that they are still good and that they are
properly inserted.
9
OPERATING INSTRUCTIONS
WARNING: Risk of electrocution. High-voltage circuits, both AC
and DC, are very dangerous and should be measured with great
care.
1. ALWAYS turn the function switch to the OFF position when the
meter is not in use.
2. If “1 ” appears in the display during a measurement, the value
exceeds the range you have selected. Change to a higher range.
NOTE: On some low AC and DC voltage ranges, with the test
leads not connected to a device, the display may show a random,
changing reading. This is normal and is caused by the high-input
sensitivity. The reading will stabilize and give a proper
measurement when connected to a circuit.
DC VOLTAGE MEASUREMENTS
CAUTION: Do not measure DC 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 function switch to the
highest V DC position.
2. Insert the black test lead banana
plug into the negative (COM) jack.
Insert the red test lead banana
plug into the positive (V) jack.
3. Touch the black test probe tip to
the negative side of the circuit.
Touch the red test probe tip to the
positive side of the circuit.
4. Read the voltage in the display.
Reset the function switch to
successively lower V DC positions
to obtain a higher resolution
reading. If the polarity is reversed,
the display will show (-) minus
before the value.
10
AC VOLTAGE MEASUREMENTS
WARNING: Risk of Electrocution. The probe tips may not be
long enough to contact the live parts inside some 240V 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 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 function switch to the highest V AC position.
2. Insert the black test lead banana
plug into the negative (COM) jack.
Insert red test lead banana plug into
the positive (V) jack.
3. Touch the black test probe tip to the
negative side of the circuit.
Touch the red test probe tip to the
positive side of the circuit.
4. Read the voltage in the display.
Reset the function switch to
successively lower V AC positions
to obtain a higher resolution reading.
11
DC CURRENT MEASUREMENTS
CAUTION: Do not make current measurements on the 20A
scale for longer than 30 seconds. Exceeding 30 seconds may
cause damage to the meter and/or the test leads.
1. Insert the black test lead banana plug into the negative (COM)
jack.
2. For current measurements up
to 200!A DC, set the function
switch to the 200!A DC
position and insert the red test
lead banana plug into the
(uA/mA) jack.
3. For current measurements up
to 200mA DC, set the function
switch to the 200mA DC
position and insert the red test
lead banana plug into the
uA/(mA) jack.
4. For current measurements up
to 20A DC, set the function
switch to the 20ADC range
and insert the red test lead
banana plug into the (20A)
jack.
5. Remove power from the circuit under test, then open up the
circuit at the point where you wish to measure current.
6. Touch the black test probe tip to the negative side of the circuit.
Touch the red test probe tip to the positive side of the circuit.
7. Apply power to the circuit.
8. Read the current in the display.
12
AC CURRENT MEASUREMENTS
CAUTION: Do not make current measurements on the 20A
scale for longer than 30 seconds. Exceeding 30 seconds may
cause damage to the meter and/or the test leads.
1. Insert the black test lead banana plug into the negative (COM)
jack.
2. For current measurements up
to 200mA AC, set the function
switch to the highest 200mA
AC position and insert the red
test lead banana plug into the
(mA) jack.
3. For current measurements up
to 20A AC, set the function
switch to the 20A AC range
and insert the red test lead
banana plug into the (20A)
jack.
4. Remove power from the circuit
under test, then open up the
circuit at the point where you
wish to measure current.
5. Touch the black test probe tip
to the negative side of the circuit.
Touch the red test probe tip to the positive side of the circuit.
6. Apply power to the circuit.
7. Read the current in the display.
13
RESISTANCE MEASUREMENTS
WARNING: To avoid electric shock, disconnect power to the
unit under test and discharge all capacitors before taking any
resistance measurements. Remove the batteries and unplug
the line cords.
1. Set the function switch to the
highest ! position.
2. Insert the black test lead banana
plug into the negative (COM) jack.
Insert the red test lead banana
plug into the positive (!" jack.
3. 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.
4. Read the resistance in the display
and then set the function switch to
the lowest ! position that is greater
than the actual or any anticipated
resistance.
14
CONTINUITY CHECK
WARNING: To avoid electric shock, never measure continuity on
circuits or wires that have voltage on them.
1. Set the function switch to the
position.
2. Insert the black lead banana plug
into the negative (COM) jack.
Insert the red test lead banana
plug into the positive (!) jack.
3. Touch the test probe tips to the
circuit or wire you wish to check.
4. If the resistance is less than
approximately 30!, the audible
signal will sound. If the circuit is
open, the display will indicate “1”.
DIODE TEST
1. Insert the black test lead banana
plug into the negative COM jack
and the red test lead banana plug
into the positive (diode) jack.
2. Turn the rotary switch to the
position.
3. Touch the test probes to the diode
under test. Forward bias will
typically indicate 400 to 1000.
Reverse bias will indicate “1 ”.
Shorted devices will indicate near
0 and the continuity beeper will
sound. An open device will
indicate “1 ” in both polarities.
15
TEMPERATURE MEASUREMENTS
1. Set the function switch to the TEMP position.
2. Insert the Temperature Probe into the Temperature Socket,
making sure to observe the correct polarity.
3. Press the ºF or ºC button for the desired units.
4. 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.
5. Read the temperature
in the display.
Note: The temperature
probe is fitted with a
type K mini
connector. A mini
connector to
banana connector
adaptor is supplied
for connection to the
input banana jacks.
16
DISPLAY BACKLIGHT
Press the
button to turn on the display backlight function.
The backlight will automatically turn off after 15 seconds.
BATTERY CHECK
The
CHECK function tests the condition of the 9V battery.
Set the function switch to the 200VDC range and press the
CHECK button. If the reading is less than 8.5, battery
replacement is recommended.
DATA HOLD
The hold function freezes the reading in the display. Press the
HOLD key momentarily to activate or to exit the hold function.
AUTO POWER OFF
The auto off feature will turn the meter off after 15 minutes.
LOW BATTERY INDICATION
If the
icon appears in the display when the battery voltage is
low. Replace the battery when this icon appears.
WRONG CONNECTION INDICATION
The
icon will appear in the upper right corner of the display
and the buzzer will sound whenever the positive test lead is
inserted into the 20A or uA/mA input jack and a non-current
(yellow) function is selected. If this occurs, turn the meter off and
reinsert the test lead into the proper input jack for the function
selected.
17
MAINTENANCE
WARNING: To avoid electric shock, disconnect the test leads
from any source of voltage before removing the back cover or
the battery cover.
WARNING: To avoid electric shock, do not operate your meter
until the battery cover is in place and fastened securely.
This multimeter 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.
5. USE ONLY A FRESH BATTERY OF THE RECOMMENDED
SIZE AND TYPE. Remove the old or weak battery so it does
not leak and damage the unit.
6. IF THE METER IS TO BE STORED FOR A LONG PERIOD
OF TIME, the battery should be removed to prevent damage to
the unit.
18
BATTERY REPLACEMENT
WARNING: To avoid electric shock, disconnect the test leads
from any source of voltage before removing the battery cover.
1. When the battery becomes exhausted or drops below the
operating voltage, “ ” will appear in the left-hand side of the
LCD display. The battery should be replaced.
2. See the Battery Installation section of this manual.
3. Dispose of the old battery properly.
WARNING: To avoid electric shock, do not operate your meter
until the battery cover is in place and fastened securely.
NOTE: If your meter does not work properly, check the fuses and
battery to make sure that they are still good and that they are
properly inserted.
FUSE REPLACEMENT
WARNING: To avoid electric shock, disconnect the test leads
from any source of voltage before replacing the fuses.
1.
2.
3.
4.
5.
Disconnect the test leads from the meter.
Remove the protective rubber holster.
Remove the battery cover (two “B” screws)
Disconnect and remove the battery.
Remove the four “A” screws securing the rear cover.
19
6. Remove the rear cover.
7. Lift the center circuit board straight up from the connectors to
gain access to the fuse holders.
8. Gently remove the old fuse and install the new fuse into the
holder.
9. Always use a fuse of the proper size and value (0.2A/250V fast
blow for the 200mA range, 20A/250V fast blow for the 20A
range).
10. Align the center board with the connectors and gently press
into place.
11. Replace and secure the rear cover, battery and battery cover
and screws.
WARNING: To avoid electric shock, do not operate your meter
until the rear cover and battery cover are in place and fastened
securely.
UL LISTED
The UL mark does not indicate that this product has been
evaluated for the accuracy of its readings.
20
TROUBLESHOOTING
There may be times when your meter does not operate properly.
Here are some common problems that you may have and some
easy solutions to them.
Meter Does Not Operate:
1. Always read all the instructions in this manual before use.
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 doesn’t operate, check
to be sure that both ends of the fuse are properly installed.
If You Do Not Understand How the Meter Works:
1. Purchase “Multitesters and Their Use for Electrical Testing”,
(Item No. 82303).
2. Call our Customer Service Line 1-888-326-1006.
SERVICE AND PARTS
Item Number
Description
82376
93894
82398
82337-D
82337-C
82337-CS
82377
Fuse kit
9V battery
Set of black and red Test Leads
Replacement battery cover
Front cover
Rear cover screws
Thermocouple probe
For replacement parts shipped directly to your home
Call 9 am – 5 pm eastern, M - F
1-888-326-1006
21