PROPOINT 8344749 Manual de usuario
User Manual
8344749V 1.0
Pen Probe Style Autoranging
Digital Multimeter
Please read this manual before use.
3
For technical questions call: 1-800-665-8685
Pen Probe Style Autoranging
Digital Multimeter
8344749V 1.0
SPECIFICATIONS
Display 3-1/2 digit LCD with a maximum reading of 1,999
Polarity Auto polarity indication
Over-range indication “OL” shown on the display
Sampling rate 3 times per second
Power single standard 9V battery
Low battery indication is displayed when the battery voltage drops below
the operating voltage
Auto power off If the meter is not operated for about 15 minutes, it will turn off
automatically and stay in Sleep mode.
Operating temperature 0°C to 40°C, < 75%RH
Storage temperature -20°C to 60°C, < 85%RH
Accessories 9V battery, owner’s manual
Pen Probe Style Autoranging Digital Multimeter
4For technical questions call: 1-800-665-8685
V 1.08344749
ELECTRICAL SPECIFICATIONS
Accuracy is specified for a period of one year after calibration and at 23°C ± 5°C with relative humidity up to 75%.
Normally, accuracy specifications take the form of: ± (% of reading + number of least significant digits)
Function Range Resolution
DC voltage
200mV ± (0.5% + 2)
2V – 20V – 200V ± (0.7% + 2)
250V ± (0.8% + 2)
• Input impedance: about 10MΩ
• Max. permitted input voltage: 250V DC
AC voltage
2V ± (0.8% + 3)
20V – 200V ± (1.2% + 3)
250V ± (1.5% + 3)
• Input impedance: about 10MΩ
• Frequency: 40Hz – 400Hz
• Max. permitted input voltage: 250V AC
DC current
20mA ± (1.2% + 3)
200mA
Max. permitted input current: 200mA DC, overcurrent will blow the fuse
AC current
20mA ± (1.5% + 5)
200mA
• Frequency: 40Hz – 400Hz
• Max. permitted input current: 200mA AC, overcurrent will blow the fuse
Resistance
200Ω ± (1.2% + 3)
2kΩ, 20kΩ, 200kΩ, 2MΩ ± (1.0% + 2)
20MΩ ± (2.0% + 2)
Diode test • Open circuit voltage: approximately 1.5V
• Test current: approximately 0.5mA
Audible continuity
• Built-in buzzer sounds if resistance is less than 50Ω.
• Built-in buzzer might sound if resistance is between 50Ω and 120Ω.
• Built-in buzzer does not sound if resistance is greater than 120Ω.
INTRODUCTION
This compact digital multimeter is used for measuring DC and AC voltage, DC and AC current, resistance, diode,
continuity, and logic level. This meter was designed for the homeowner, hobbyist, and professional needing to make
electrical and electronic equipment measurements.
Pen Probe Style Autoranging Digital Multimeter
5
For technical questions call: 1-800-665-8685
V 1.0 8344749
IMPORTANT SAFETY PRECAUTIONS
WARNING! Read and understand all instructions before using this tool. Keep this manual for the safety warnings
and precautions, operating, inspection and maintenance instructions. When using this tool, basic precautions
should always be followed to reduce the risk of personal injury and/or damage to the equipment. Note that when
this manual refers to a part number, it refers to the parts list included. Before allowing someone else to use this tool,
make sure they are aware of all safety information.
WORK AREA
1. Keep your work area clean and well lit. Cluttered and dark areas invite accidents.
2. Operate in a safe work environment. Do not use machines or air tools in damp or wet locations. Do not expose
to rain.
3. Keep children, bystanders and visitors away from the work area. Do not let them handle tools or extension
cords. No one should be in the work area if they are not wearing suitable protective equipment.
4. Store unused equipment. When not in use, tools must be stored in a dry location to prevent rust. Always lock up
tools and keep them out of reach of children.
PERSONAL SAFETY
1. Dress properly, wear protective equipment.
2. Do not over reach; keep proper footing and balance at all times. Proper footing and balance enables better
control of the tool in unexpected situations.
3. Stay alert, watch what you are doing and use your common sense. Do not operate any machine or tool when
you are tired, under the influence of drugs, alcohol or medications.
SPECIFIC SAFETY PRECAUTIONS
This meter has been designed according to IEC-61010 concerning electronic measuring instruments with a
measurement category II (CAT II 250V) and pollution degree 2. Measuring Category II (CAT II) is for measurement
performed on circuits directly connected to low voltage installation (for example, measurements on household
appliances, portable tools, and similar equipment). Do not use this meter for measurements within Measurement
Categories III and IV.
WARNING! To avoid possible electric shock or personal injury, follow these guidelines:
1. Ensure that the battery is correctly placed in the battery case and connected properly.
2. Do not operate the meter with the battery cover or portions of the case removed or loosened.
3. Do not use the meter if it is damaged. Before you use the meter, inspect the case. Inspect the test lead for
damaged insulation or exposed metal. Check test lead and test probe for continuity. Damaged leads should
be replaced.
4. Do not use the meter if it operates abnormally. Protection may be impaired. When in doubt, have the meter
serviced by an authorized service center.
5. Do not operate the meter around explosive gas, vapor, or dust.
6. Do not apply a voltage or current higher that the selected range’s upper limit between terminals, or between
any terminal and earth ground.
7. Before use, verify the meter’s operation by measuring a known voltage.
8. When measuring current, turn off power to the circuit before connecting the meter to the circuit. Remember to
place the meter in series with the circuit.
9. Use caution when working above 30V AC rms, 42V peak, or 60V DC. Such voltages pose a shock hazard.
10. Do not touch any naked conductor with hand or skin and do not ground yourself.
11. Connect the test lead before connecting the test probe. Always disconnect the test probe first.
12. Remove the test lead and test probe from the circuit under test before opening the battery cover or the case.
13. Replace the battery as soon as the low battery indicator appears on the LCD display.
Pen Probe Style Autoranging Digital Multimeter
6For technical questions call: 1-800-665-8685
V 1.08344749
CAUTION!
To avoid possible damage to the meter or to the equipment under test, follow these guidelines:
1. Disconnect circuit power and discharge all capacitors before measuring resistance or continuity.
2. Select the proper function and range for your measurement.
3. Before measuring current, turn off the power to the circuit before connecting the meter to the circuit.
4. Before rotating the function switch to change functions, disconnect the test lead and test probe from the circuit
under test.
5. Remove the test lead and test probe from the meter before opening the battery cover or the case.
6. When finished measuring, switch off the power. Be sure to remove the battery when storing for long periods to
avoid leakage problems.
7. Do not use or store this instrument in a place of direct sunlight, high temperature and high humidity.
UNPACKING
1. Carefully remove the parts and accessories from the box.
2. Make sure that all items listed in the parts lists are included.
3. Inspect the parts carefully to make sure the tool was not damaged while shipping.
4. Do not discard the packaging material until you have carefully inspected and satisfactorily operated the tool.
WARNING! If any part is missing, do not operate the tool until the missing parts are replaced. Failure to do so
could result in serious personal injury.
OPERATION
PARTS IDENTIFICATION
1. Display
2. button
To enable the flashlight function, press and hold down this button. To
turn off the flashlight, release the button.
3. button
To hold the present reading on the display, press this button. will
appear on the display as an indicator. To exit the hold mode, press
this button again. will no longer appear on the display. This button
can also be used to wake the meter from sleep mode.
4. Function switch
Used to select the required function or range, as well as turn off the meter. To preserve battery life, set this
switch to the “OFF” position when the meter is not is use.
5. Test probe
Input probe (positive polarity) for the following tests: voltage, current (< 200mA), resistance, and diode.
6. Flashlight LED
Used for illumination.
7. button
Used to switch the meter between:
• DC voltage and AC voltage measurements
• DC current and AC current measurements
• Diode and continuity tests
8. button
To turn on or off the backlight, press and hold down this button for about 1 second. The backlight will turn off
automatically about 15 seconds after being turned on.
Pen Probe Style Autoranging Digital Multimeter
7
For technical questions call: 1-800-665-8685
V 1.0 8344749
9. Probe of the black test lead (negative polarity)
10. Black test lead
MEASURING DC VOLTAGE
1. Set the function switch to the position.
2. Press the button to select DC voltage measurement. appears on the display.
3. Connect the test probe and the black test lead across the source or circuit to be measured.
4. The display shows the reading and the polarity of the test probe connection.
MEASURING AC VOLTAGE
1. Set the function switch to the position.
2. Press the button to select AC voltage measurement. appears on the display.
3. Connect the test probe and the black test lead across the source or circuit to be measured.
4. The display shows the reading.
MEASURING DC CURRENT
1. Set the function switch to the position.
2. Press the button to select DC current measurement. appears on the display.
3. Connect the test probe and the black test lead in series with the circuit to be measured.
4. The display shows the reading and the polarity of the test probe connection.
MEASURING AC CURRENT
1. Set the function switch to the position.
2. Press the button to select AC current measurement. appears on the display.
3. Connect the test probe and the black test lead in series with the circuit to be measured.
4. The display shows the reading.
MEASURING RESISTANCE
1. Make sure the load to be tested is without power and all capacitors are fully discharged.
2. Set the function switch to the position.
3. Connect the test probe and the black test lead across the load to be measured.
4. The display shows the reading.
Notes:
• If the resistance is more than 1MΩ, it may take several seconds to stabilize the reading. This is normal
for high resistance measurements.
• If the probes are open, overload indication will be shown on the display.
PERFORMING A DIODE TEST
1. Set the function switch to the position.
2. Press the button until appears on the display.
3. Connect the test probe to the anode of the diode and the black test lead to the cathode of the diode
being measured.
4. Read the approximate forward voltage drop of the diode on the display.
Multimètre numérique à commutation automatique de calibre, style sonde stylo
8En cas de questions techniques, appellez le: 1-800-665-8685
8344749V 1.0
PERFORMING A CONTINUITY TEST
1. Turn off the power to the circuit under test, and then discharge all capacitors and inductors.
2. Set the function switch to the position.
3. Press the button until appears on the display.
4. Connect the test probe and the black test lead across the circuit being measured.
5. If the resistance of the circuit is less than 50Ω, the built-in buzzer will sound.
MEASURING LOGIC LEVEL (TTL)
1. Set the function switch to the position.
2. Connect the black test lead to the ground terminal of the circuit to be measured and the test probe to the
required test point of the circuit.
3. If the level of the test point is more than or equal to 2.3 ± 0.2V, the display will show “HI ” and the voltage
value. The meter will sound discontinuously.
4. If the level of the test point is less than or equal to 0.8 ± 0.2V, the display will show “LO ” and the voltage
value. The meter will sound continuously.
5. If the probes are open, the display will show a TTL logic levels approximate mid value (1.0 to 1.4V).
REPLACING THE BATTERY
CAUTION! Before attempting to open the case of the instrument, be sure to disconnect the test lead and the test probe
from any energized circuits to avoid shock hazard.
When appears on the display, the battery is low and should be replaced immediately. To replace the battery,
follow these steps:
1. Remove the screws from the battery cover, and then remove the battery cover.
2. Replace the old battery with new battery of the same type (9V).
3. Reinstall the battery cover and the screws.
REPLACING THE FUSES
CAUTION! Before attempting to open the case of the instrument, be sure to disconnect test leads from any energized
circuits to avoid shock hazard.
The fuses will rarely need replacement and usually are blown as a result of an operator error. If the meter does not
work, you should replace the fuses. The meter uses a fuse with a specified rating of 250mA L 250V.
To replace the fuses, follow these steps:
1. Set the function switch to the OFF position.
2. Remove the battery door (c).
3. Remove part “a” by turning it.
4. Remove the screws on the back cover, and then remove the back
cover (b).
5. Remove the fuse by gently prying one end loose, then slide the
fuse out of its bracket.
6. Install a new fuse of the same rating.
7. Reinstall the back cover, battery door, part “a” and all the screws.
Note: If the test lead is not placed in its correct position, the back cover can not be installed.
Multimètre numérique à commutation automatique de calibre, style sonde stylo
9
En cas de questions techniques, appellez le: 1-800-665-8685
8344749 V 1.0
MAINTENANCE
Before making any adjustments or changing any accessory, turn off the tool and remove the battery.
1. Check for damaged parts. Before using any tool, any part that appears to be damaged should be carefully
checked to determine that it will operate properly and perform its intended functions. Check for alignment and
binding of moving parts, for broken parts or mounting fixtures, or for any other condition that may affect proper
operation. Any part that is damaged should be repaired or replaced by a qualified technician.
2. When servicing, use only identical replacement parts. Only use accessories intended for use with this tool.
Replace damaged parts immediately.
3. Keep the tool clean. Wipe the tool with a clean cloth and periodically blow out all areas with compressed air.
If compressed air is not available, use a brush to remove dust from all areas. Do not use harsh chemicals or
solvents to clean the tool. These chemicals could seriously damage the plastic housing.
4. Regularly inspect all mountings and screws to ensure tightness. Should any screws become loose,
tighten immediately.
5. If repairs are required, bring your tool to an authorized service center.
DISPOSING OF THE TOOL
If your tool has become damaged beyond repair, do not throw it out. Bring it to the appropriate recycling facility.
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