Triplett MM650 Bedienungsanleitung
User Manual
MM650 CAT IV True RMS Digital
Multimeter with LoZ
Introduction
The Triplett MM650 features True RMS measurements for more
accurate AC readings and a Low Z setting for eliminating false
readings caused by “ghost” voltages. Functions include AC/DC
voltage and current, resistance, continuity, capacitance, frequency,
duty cycle, temperature, and diode test. The MM650 also offers the
added convenience of a built-in LED flashlight. This meter is fully
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tested and calibrated and, with proper use, will provide many years
of reliable service.
WARNINGS
• Read, understand and follow Safety Rules and Operating
Instructions in this manual before using this meter.
• The meter’s safety features may not protect the user if not
used in accordance with the manufacturer’s instructions.
• Ensure that the test leads are fully seated in the input jacks
and keep fingers away from the metal probe tips when taking
measurements.
• Before changing functions using the selector switch, always
disconnect the test leads from the circuit under test.
• Use only UL listed test leads with the proper safety category rating.
• Comply with all applicable safety codes. Use approved
personal protective equipment when working near live
electrical circuits - particularly with regard to arc-flash
potential.
• Use caution on live circuits. Voltages above 30 V AC rms, 42 V
AC peak, or 60 V DC pose a shock hazard.
• Do not use if the meter or test leads if appear to be damaged.
• Verify operation before using meter by measuring a known live
voltage.
• Do not use the meter in wet or damp environments or during
electrical storms.
• Do not use the meter near explosive vapors, dust or gasses.
• Do not use the meter if it operates incorrectly. Protection
may be compromised.
• Do not operate meter while Low Battery warning is on.
Replace batteries immediately.
• Do not apply voltage or current that exceeds the meter’s
maximum rated input limits.
• When replacing the battery or fuses, be sure to secure the
battery compartment door firmly to maintain the waterproof and
dust proof integrity of the meter. Loose or overtightened screws,
or an improperly seated O-ring may compromise the meter's
water and dust ingress protection.
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International Safety Symbols
Potential danger. Indicates the user must refer to the manual for important safety information
Indicates hazardous voltages may be present
Equipment is protected by double or reinforced insulation
MAX
Indicates the terminal(s) so marked must not be connected to a circuit where the
1000V
voltage with respect to earth ground exceeds the maximum safety rating of the meter
Safety Category Ratings
Category Rating
Brief Description
Typical Applications
CAT II
Single phase receptacles
- Household appliances, power tools
and connected loads
- Outlets more than 30ft (10m) from a CAT III source
- Outlets more than 60ft (20m) from a CAT IV source
CAT III
Three phase circuits and
- Equipment in fixed installations such as 3-phase
single phase lighting
motors, switchgear and distribution panels
circuits in commercial
- Lighting circuits in commercial buildings
buildings
- Feeder lines in industrial plants
- Any device or branch circuit that is close to a CAT III source
CAT IV
Connection point to
- Primary distribution panels
utility power and outdoor
- Overhead or underground lines to detached buildings
conductors
- Incoming service entrance from utility
- Outdoor pumps
The measurement category (CAT) rating and voltage rating is determined by a combination of the meter, test probes
and any accessories connected to the meter and test probes. The combination rating is the LOWEST of any individual
component.
IP67 Rating
NOTE: Meter is waterproof and dust tight
with supplied plugs or test leads inserted
into input jacks.
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Meter Description
1. LCD display
2. RANGE button
3. REL button
4. MODE button
5. Rotary function switch
6. 10A input jack
7. µA, mA input jack
8. COM input jack
9. V/Ω/, Hz/ %, Diode,
Continuity, Cap, °C/F Input
Jack
10. HOLD/Backlight button
11. MAX/MIN/Average button
12. Flashlight/PEAK button
13. Flashlight
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Display Description
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Operating Instructions
RANGE Button
The Auto Range mode automatically selects the proper range for
the measurement being made and is generally the best mode for
most applications. For measurement situations requiring that a
range be manually selected, perform the following:
1. Momentarily press the RANGE button. The “AUTO”
indicator will no longer be shown on the LCD display.
2. Momentarily press the RANGE button to step through
the available ranges until the desired range is selected.
3. To exit the Manual Ranging mode, press and hold the
RANGE button until the “AUTO” indicator reappears.
NOTE: The range button does not work on Frequency,
Duty Cycle, Capacitance or Temperature.
MODE Button
Used to select AC or DC, Frequency or Duty Cycle,
Resistance, Continuity or Diode Test, and °C or °F.
REL button
The RELATIVE function zeros out the reading on the display and
stores it as a reference. Subsequent readings will be displayed as
the relative difference between the actual measurement and the
stored reference value. To activate, press the REL button. The
“REL” indicator will appear on the LCD display along with the
relative reading. Press the REL button again to return to normal
operation.
NOTE: The meter does not Auto Range when the Relative mode is
active. The display will read OL if the difference exceeds the range.
When this occurs, exit REL and use the RANGE button to select a
higher range. REL does not work on Frequency, Duty Cycle,
Temperature, Continuity or Diode Test.
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MAX/MIN/AVG Button
1. Momentarily press the MAX/MIN/AVG button to activate
the MAX/MIN/Average mode. “MAX” will appear on the
LCD display and the meter will display and hold the
highest reading. The meter will update the reading when
a higher “max” occurs.
2. Momentarily press the MAX/MIN/AVG button again to
view the lowest reading. “MIN” will appear on the LCD
display and the meter will display and hold the lowest
reading. The meter will update the reading when a lower
“min” occurs.
3. Momentarily press the MAX/MIN/AVG button once more
to view the average reading. The “AVG” symbol will
appear on the LCD display and the meter will display the
running average. The meter will update the reading when
the average value changes.
4. Press and hold the MAX/MIN/AVG button to end
MAX/MIN/Average and return to normal operation.
NOTE: The meter does not Auto Range when MAX/MIN/AVG is
active. The meter will display OL if the reading exceeds the range.
When this occurs, exit MAX/MIN/AVG and use the RANGE button
to select a higher range. MAX/MIN/ AVG does not work on
Frequency, Duty Cycle or Capacitance.
Flashlight/PEAK Button
Momentarily press the PEAK button to turn the flashlight on
and off.
The PEAK function is accessible when measuring AC
Voltage or Current. It captures and displays the highest
positive peak and the highest negative peak of the AC
waveform.
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1. Press and hold the PEAK button until “Peak MAX”
appears on the LCD display. The meter will display the
highest reading and will update the reading when a
higher positive peak occurs.
2. To view highest negative peak, press the PEAK
button for approximately one second. “Peak MIN” will
appear on the LCD display and the meter will display
and hold the highest reading. The meter will update the
reading when a higher negative peak occurs.
3. Press the PEAK button for approximately one second
to switch between Peak MAX and Peak MIN
readings.
4. Press and hold the PEAK button to exit PEAK and return
to normal operation.
NOTE: The meter does not Auto Range in the PEAK Mode. The
meter will display OL if the reading exceeds the range. When this
occurs, exit PEAK and use the range button to select a higher
range.
HOLD/Backlight Button
To freeze the reading on the LCD display, momentarily press
the HOLD button. The “HOLD” indicator will be displayed
while the reading is being held. Momentarily press the HOLD
button again to exit HOLD and return to normal operation.
To turn the backlight on, press and hold the HOLD button
until the backlight turns on.
To turn the backlight off, press and hold the HOLD button
until the backlight turns off.
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1. ALWAYS turn the function switch to the OFF position
when the meter is not in use.
2. If “OL” appears in the display during a
measurement, the value exceeds the range you
have selected. Change to a higher range.
AC/DC Voltage Measurements
1. Set the Rotary Switch to the position.
2. Press the MODE button to select AC or DC Voltage. The
AC or DC Symbol will appear on the LCD display.
3. Insert the black test lead into the COM jack and the red
test lead into the V input jack.
4. Touch the test leads to the circuit under test. If measuring
DC voltage, touch the red test lead to the positive side of
the circuit and the black test lead to the negative side of
the circuit.
5. Read the voltage on the LCD display.
WARNING: Risk of electrocution. High-voltage
circuits, both AC and DC, are very dangerous and
should be measured with great care.
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