Craftsman 82141 Digital Multimeter User Manual

Craftsman 82141 Digital Multimeter

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.
2. USE EXTREME CAUTION when working with high voltages.
3. DO NOT measure voltage if the voltage on the “COM” input jack exceeds 500V above earth ground.
4. NEVER connect the meter leads across a voltage source while the function switch is in the current, resistance, or diode mode. Doing so can damage the meter.
5. ALWAYS discharge filter capacitors in power supplies and disconnect the power when making resistance or diode tests.
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 and the battery and fuse doors are in place and fastened securely.

CONTROLS AND JACKS

1. LCD Display
2. Function switch
3. COM jack
4. 10A jack
5. Positive jack

Note: The Tilt stand, fuse, and battery compartment are on the rear of the unit.

SPECIFICATIONS

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.

BATTERY INSTALLATION

1. Disconnect the test leads from the meter.
2. Remove the protective rubber holster (if installed).
3. Open the battery door by loosening the screw using a Phillips head screwdriver.
4. Insert the battery into the battery holder, observing the correct polarity.
5. Put the battery door back in place. Secure with the screw.

NOTE: If your meter does not work properly, check the fuses and batteries to make sure that they are still good and that they are properly inserted.

OPERATING INSTRUCTIONS

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.
3. 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

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. The display will indicate the proper decimal point and value. If the polarity is reversed, the display will show (-) minus before the value.

AC VOLTAGE MEASUREMENTS

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 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 AC positions to obtain a higher resolution reading. The display will indicate the proper decimal point and value.

DC CURRENT MEASUREMENTS

1. Insert the black test lead banana plug into the negative (COM) jack.
2. 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 (mA) jack.
3. For current measurements up to 10A DC, set the function switch to the 10A range and insert the red test lead banana plug into the (10A) 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. The display will indicate the proper decimal point and value.

AC CURRENT MEASUREMENTS

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 200mA AC position and insert the red test lead banana plug into the (mA) jack.
3. For current measurements up to 10A AC, set the function switch to the 10A range and insert the red test lead banana plug into the (10A) 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. The display will indicate the proper decimal point and value.

CONTINUITY CHECK

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 (Ω) jack.
3. Touch the test probe tips to the circuit or wire you wish to check.
4. If the resistance is less than approximately 30Ω, 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 function switch to the diode position.
3. Touch the test probes to the diode under test. Forward voltage will indicate 400 to 700mV. Reverse voltage will indicate “1”. Shorted devices will indicate near 0mV, and an open device will indicate “1” in both polarities.

BATTERY TEST

• Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive V jack.
• Select the 1.5V or 9V BAT position using the function switch.
• Connect the red test lead to the positive side of the 1.5V or 9V battery and the black test lead to the negative side of the 1.5V or 9V battery.
• Read the voltage in the display.

MAINTENANCE

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 FRESH BATTERIES OF THE RECOMMENDED SIZE AND TYPE. Remove old or weak batteries so they do not leak and damage the unit.
6. IF THE METER IS TO BE STORED FOR A LONG PERIOD OF TIME, the batteries should be removed to prevent damage to the unit.

REPLACING BATTERIES

1. When the batteries become exhausted or drop below the operating voltage , “9” will appear in the lower left corner of the LCD display. The batteries should be replaced.
2. Follow the instructions for installing batteries. See the Battery Installation section of this manual.
3. Dispose of the old batteries properly.

REPLACING FUSES

1. Disconnect the test leads from the meter and any item under test.
2. Remove the protective rubber holster.
3. Open the fuse door by loosening the screw on the door using a Phillips head screwdriver.
4. Remove the old fuse from its holder by gently pulling it out.
5. Install the new fuse into the holder.
6. Always use a fuse of the proper size and value (0.2A/250V fast blow for the 200mA range, 10A/250V fast blow for the 10A range).
7. Put the fuse door back in place. Insert the screw and tighten it securely.

UL LISTED

The UL mark does not indicate that this product has been evaluated for the accuracy of its readings.

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:

• Always read all the instructions in this manual before use.
• Check to be sure the batteries are properly installed.
• Check to be sure the batteries are good.
• 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 Do Not Understand How the Meter Works:

• Purchase the instructional book “Multitesters and Their Use for Electrical Testing” (Item No. 82303) at your local Sears store.
• Call our Customer Service Line 1-888-326-1006.

ONE YEAR FULL WARRANTY

ONE-YEAR FULL WARRANTY ON CRAFTSMAN MANUAL RANGING MULTIMETER. If this CRAFTSMAN Manual Ranging 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. If this CRAFTSMAN Manual Ranging Multimeter is used for commercial or rental purposes, this warranty applies for 90 days from the date of purchase. 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 9 am-5 PM (EST) Monday through Friday, 1-888-326-1006. For more details, visit [www.craftsman.com].

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Craftsman 82141 Digital Multimeter-FAQs.