Craftsman 81079 User Manual

Owner's Manual

True RMS Multimeter with IR Thermometer

Model No. 81079

CAUTION: Read, understand and

follow Safety Rules and Operating Instructions in this manual before using this product.

www.craftsman.com 062006

• Safety

• Operation

• Maintenance

• Español

TABLE OF CONTENTS

Warranty Page 3 Safety Instructions 4 Safety Symbols 5 Control and Jacks 6 Symbols and Annunciators 6 Specifications 7 Battery Installation 10 Operating Instructions 11

DC Voltage Measurements 11 AC Voltage Measurements 12 DC Current Measurements 13 AC Current Measurements 14 Resistance Measurements 15 Continuity Check 16 Diode Test 16 Contact Temperature Measurements 17 Non-Contact Temperature Measurements 18 Capacitance Measurements 19 Frequency Measurements 20 % Duty Cycle Measurements 20 Autorange/Manual Range Selection 21 Relative Mode 21 Display Backlight 21 Data Hold 22 Auto Power Off 22 Low Battery indication 22 Wrong Connection Indication 22

Maintenance 23

Battery Replacement 24

Fuse Replacement 25 Troubleshooting 26 Service and Parts 26

ONE YEAR FULL WARRANTY

ONE YEAR FULL WARRANTY ON CRAFTSMAN PROFESSIONAL TRUE RMS MULTIMETER If this CRAFTSMAN Professional True RMS 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.

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:

V DC or V AC 600V DC/AC, 200Vrms on 400mV

Function Maximum Input

mA AC/DC 500mA 250V fast acting fuse A AC/DC 20A 250V fast acting fuse(30

Frequency, Resistance, Capacitance, Duty Cycle, Diode Test, Continuity Temperature 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 500V 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 fuse or battery

7. NEVER operate the meter unless the back cover is in place

and fastened securely

Input Limits

range

seconds max every 15 minutes) 250Vrms for 15sec max

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

CAUTION

MAX 600V

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 damage to the product.

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.

This symbol indicates there is a potential hazard from a laser light source.

CONTROLS AND JACKS

1. IR Thermometer and laser pointer

2. 4000 count LCD display

3. HOLD and Backlite button

4. SELECT button

5. Function switch

6. mA, uA and A input jacks

7. COM input jack

8. Positive input jack

9. RANGE hold button

10. RELATIVE button

11. Laser pointer button

Note: Tilt stand and battery compartment are on rear of unit.

SYMBOLS AND ANNUNCIATORS

•))) Continuity

Diode test

Laser pointer

Battery status

Test lead connection

error n nano (10 (capacitance) ! micro (10 m milli (10 k kilo (10 M mega (10 Hz Hertz (frequency) V Volts % Percent (duty ratio) REL Relative AC Alternating current AUTO Autoranging DC Direct current HOLD Data hold ºF Degrees Fahrenheit ºC Degrees Centigrade

-9

)

-6

) (amps, cap)

-3

) (volts, amps) A Amps

) (ohms) F Farads (capacitance)

) (ohms) ! Ohms

SPECIFICATIONS

Function Range Resolution DC

Voltage

AC Voltage

DC Current

AC Current

NOTE: Accuracy is stated at 65oF to 83oF (18oC to 28oC) and less

400mV 0.1mV ±(0.3% reading + 2 digits)

4V 0.001V

40V 0.01V 400V 0.1V

600V 1V ±(0.8% reading + 3 digits)

50 to 400Hz 400Hz to 1kHz

400mV 0.1mV ±(1.5% reading

4V 0.001V 40V 0.01V

400V 0.1V

600V 1V ±(1.8% reading

400µA 0.1µA

4000µA 1µA

40mA 0.01mA

400mA 0.1mA

4A 0.001A 20A 0.01A

50 to 400Hz 400Hz to 1KHz

400µA 0.1µA

4000µA 1µA

40mA 0.01mA

400mA 0.1mA

4A 0.001A 20A 0.01A

than 75% RH.

±(0.5% reading + 2 digits)

+ 15 digits)

±(1.5% reading

+ 6 digits)

±(1.5% reading + 3 digits)

±(2.5% reading + 5 digits)

±(1.8% reading

+ 8 digits)

±(3.0% reading + 8 digits)

Accuracy

±(2.5% reading

+ 15digits)

±(2.5% reading

+ 8 digits)

±(3% reading +

8 digits)

±(3.0% reading + 7 digits)

±(3.5% reading + 10 digits)

Function Range Resolution Accuracy

Resistance

apacitance

Frequency

(type-K)

(IR)

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

400! 0.1! ±(0.8% reading + 4 digits)

4k! 0.001k! ±(0.8% reading + 2 digits)

40k! 0.01k!

400k! 0.1k!

4M! 0.001M!

40M! 0.01M! ±(3.0% reading + 5 digits)

40nF 0.01nF ±(5.0% reading + 7 digits)

400nF 0.1nF ±(3.0% reading + 5 digits)

4µF 0.001µF

40µF 0.01µF

100µF 0.1µF ±(5.0% reading + 5 digits)

5.000Hz 0.001Hz

50.00Hz 0.01Hz

500.0Hz 0.1Hz

5.000kHz 0.001kHz

50.00kHz 0.01kHz

500.0kHz 0.1kHz

5.000MHz 0.001MHz

10.00MHz 0.01MHz

Sensitivity: 0.8V rms min. <100kHz; 5Vrms min > 100kHz.

0.1 to 99.9% 0.1% ±(1.2% reading + 2 digits) Duty Cycle

Pulse width: 100!s - 100ms, Frequency: 5Hz to 150kHz

-4 to 1382°F 1°F Temp

-20 to 750°C

-4 to 518°F 1°F Temp

-20 to270°C

converter.

1°C

±(1.0% reading + 2 digits)

±(3.5% reading + 5 digits)

±(1.5% reading + 5 digits)

±(1.2% reading + 2 digits)

±(1.5% reading + 4 digits)

±(3.0% reading + 3 digits)

(probe accuracy not included)

±2.0% reading or ±2°C, ± 4 °F

+ 18 hidden pages