MasterCraft 052-0052-2 User manual
AUTO-RANGING
DIGITAL MULTIMETER
INSTRUCTION
MANUAL
model no. 052-0052-2
Read and understand this instruction manual thoroughly
before using the product. It contains important
information for your safety as well as operating and
maintenance advice.
Keep this instruction manual for future use. Should this
product be passed on to a third party, then this
instruction manual must be included.
SAFETY INFORMATION
This meter has been designed according to EC 61010 concerning
electronic measuring instruments with a measurement category
(CAT IV 600V) and pollution degree 2.
WARNING
To avoid possible electric shock or personal injury, follow these
guidelines:
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Do not use the meter if it is damaged. Before you use the meter,
inspect the case. Pay particular attention to the insulation
surrounding the connectors.
Inspect the test leads for damaged insulation or exposed metal.
Check the test leads for continuity. Replace damaged test leads
before you use the meter.
Do not use the meter if it operates abnormally. Protection may
be impaired. When in doubt, have the meter serviced.
Do not operate the meter where explosive gas, vapour or dust is
present.
Do not apply more than the rated voltage, as marked on the
meter, between terminals or between any terminal and earth
ground.
Before use, verify the meter's operation by measuring a known
voltage.
When measuring current, turn off circuit power before connect-
ing the meter in the circuit. Remember to place the meter in
series with the circuit.
2
WARNING
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When servicing the meter, use only specified replacement parts.
Use caution when working with voltage above 30 V AC RMS, 42
V peak, or 60 V DC. Such voltages pose a shock hazard.
When using the probes, keep your fingers behind the finger
guards on the probes.
When making connections, connect the common test lead
before you connect the live test lead. When you disconnect test
leads, disconnect the live test lead first.
Remove the test leads from the meter before you open the
battery cover or the case.
Do not operate the meter with the battery cover or portions of
the case removed or loosened.
To avoid false readings, which could lead to possible electric
shock or personal injury, replace the battery as soon as the low
battery indicator ( ) appears.
When in Relative mode ("REL" is displayed) or in Data Hold
mode (" " is displayed), caution must be used because
hazardous voltage may be present.
Do not use the meter in a manner not specified by this manual
or the safety features provided by the meter may be impaired.
Adhere to local and national safety codes. Individual protective
equipment must be used to prevent shock and arc blast injury
where hazardous live conductors are exposed.
To avoid electric shock, do not touch any naked conductor with
your hand or skin, and do not ground yourself.
Do not use the supplied test leads with other equipment.
Do not use the meter if your hand or the meter is wet.
When an input terminal is connected to dangerous live potential,
it is to be noted that this potential can occur at all other terminals!
model no. 052-0052-2 | contact us 1-800-689-9928
3
WARNING
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CAT IV - Measurement Category IV is for measurements performed
at the source of the low-voltage installation. Examples are
electricity meters and measurements on primary overcurrent
protection devices and ripple control units.
For measurements on main or within Measurement Category
Ⅲ/Ⅳcircuits, the attached test probes must be set in Measure-
ment Category Ⅲ/Ⅳmode; otherwise, electric shock may
occur!
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WARNING
To avoid possible damage to the meter or to the equipment under
test, follow these guidelines:
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Disconnect circuit power and discharge all capacitors thorough-
ly before measuring resistance, diode, capacitor, temperature
and continuity.
Use the proper terminals, function and range for your measurements.
Before measuring current, check the meter's fuses and turn off
the power to the circuit before connecting the meter to the circuit.
Before rotating the rotary switch to change functions, disconnect
test leads from the circuit under test.
The meter uses multiple anti-interference designs, but it may
stop working if the interference in the environment is too
intense. Turning on the meter again can solve this problem.
CAUTION
model no. 052-0052-2 | contact us 1-800-689-9928
5
CAUTION
Model 052-0052-2 meter is a compact 3 3/4-digit digital multimeter
for measuring DC and AC voltage, DC and AC current, resistance,
continuity, diode, capacitance, frequency, duty cycle and non-contact
AC voltage detection function.
It features relative measurement, data hold, backlight, low battery
indication, overrange indication, automatic power-off, full-range
overload protection, autoranging and more. It is easy to operate and
is an ideal test tool.
Alternating current
Direct current
Both direct and alternating current
Caution, risk of danger. Refer to the operating manual before use.
Caution, risk of electric shock.
Earth (ground) terminal
Fuse
Conforms to European Union directives
The equipment is protected throughout by double insulation or
reinforced insulation.
INTRODUCTION
ELECTRICAL SYMBOLS
6
INTRODUCTION
FRONT PANEL
1
2
3
4
5
678
9
10
11
1.
2.
Display
3 3/4 -digit LCD, with a max. reading of 3999.
"RANGE" Button
Used to switch the meter between autorange mode and manual
range mode as well as to select desired manual range.
model no. 052-0052-2 | contact us 1-800-689-9928
7
INTRODUCTION
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3.
4.
5.
6.
7.
8.
9.
"Hz %" Button
Used to switch the meter between frequency and duty cycle
measurements when the rotary switch is in the "Hz/%" position.
" " Button
Used to switch the meter between:
Function/Range Switch
Used to select the desired function or range as well as to turn on
or off the meter.
To save battery power, set this switch to the "OFF" position
when the meter is not in use.
"10A" Terminal
Plug-in connector for the red test lead for current
(400 mA - 10 A) measurements.
"COM" Terminal
This "COM" terminal is a plug-in connector for the black test
lead for all measurements except temperature measurements.
It is also a plug-in connector for the negative plug of a K type
thermocouple for temperature measurements.
"INPUT" Terminal
This "INPUT" terminal is a plug-in connector for the red test
lead for all measurements except temperature measurements
and current measurements ≥ 400 mA.
It is also a plug-in connector for the positive plug of a K type
thermocouple for temperature measurements.
"REL" Button
Used to enter/exit Relative mode.
AC current and DC current measurement functions.
Diode and continuity test functions.
Fahrenheit and celsius measurements.
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INTRODUCTION
BUILT-IN BUZZER:
10.
11.
"HOLD" Button
Press this "HOLD" button briefly to enter or exit Data Hold mode.
Press and hold down this button for about 2 secs to turn on or
off the backlight.
Holster
1.
2.
When you press a button, the buzzer will sound a beep if this
press is effective.
The buzzer will sound several short beeps about one minute
before the meter turns off automatically and will sound a long
beep before the meter turns off automatically.
model no. 052-0052-2 | contact us 1-800-689-9928
9
INTRODUCTION
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