MasterCraft 052-0052-2 Instruction 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 connecting the meter in the circuit. Remember to place the meter in
series with the circuit.
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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 Measurement 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 thoroughly 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
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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
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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
UNDERSTANDING THE DISPLAY
SYMBOL MEANING
9
10
123
4
5
6
7
8
1.
2.
3.
4.
5.
6.
7.
8.
9.
AUTO
REL
AC
DC
----- Continuity test is selected.
----- Diode test is selected.
----- Autorange mode is selected.
----- Relative mode is active.
----- Data Hold mode is active.
----- Negative sign
----- AC
----- DC
----- The battery is low and must be replaced immediately.
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INTRODUCTION
Warning:
To avoid false readings, which could lead to possible electric
shock or personal injury, replace the battery as soon as this low
battery indicator appears.
Units:10.
mV, V
Unit of voltage
mV: Millivolt; V: Volt;
1 V = 10
3
mV
A: Microamp;
mA: Milliamp; A: Ampere;
1 A = 10
3
mA = 106 A
: Ohm; k: Kilohm;
M: Megohm;
1 M = 10
3
k = 106
nF: Nanofarad; F: Microfarad
1 F = 10
6
F = 109 nF = 10
12
pF
ºC: Celsius degree
ºF: Fahrenheit degree
f (ºF) = 32 + 1.8 x c (ºC)
Hz: Hertz; kHz: Kilohertz;
MHz: Megahertz;
1 MHz = 10
3
kHz = 106 Hz
%: Percent
Unit of current
Unit of resistance
Unit of capacitance
Unit of temperature
Unit of frequency
Unit of duty cycle
μA, mA,
A
Ω, kΩ,
MΩ
nF, μF
ºC, ºF
Hz, kHz,
MHz
%
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INTRODUCTION
GENERAL SPECIFICATIONS
Fuse Protection for "INPUT" Terminal Inputs:
400 mA/600 V FAST fuse, Min. Interrupt Rating 10000 A
Fuse Protection for "10A" Terminal Inputs:
10 A/600 V FAST fuse, Min. Interrupt Rating 10000 A
Display: 3 3/4-digit LCD with a max. reading of 3999
Overrange Indication: "OL" shown on the display
Negative Polarity Indication:
Negative sign " – " shown on the display automatically
Sampling Rate: About 2 to 3 times/sec
IP degree: IP 20
Operating Environment: Temperature: 32 to 104ºF (0 to 40ºC)
Relative Humidity: < 75%
Temperature Coefficient:
0.2 x (specified accuracy) / ºC [< 64ºF (18ºC) or > 82ºF (28ºC)]
Storage Environment: Temperature: 14 to 122ºF (-10 to 50ºC)
Relative Humidity: < 85% RH
Operating Altitude: 0 – 6560' (0 – 2000 m)
Battery: 9 V battery, 6F22 or equivalent, 1 piece
Low Battery Indication: " " shown on the display
Size: 7 1/4 x 3 1/2 x 2 7/16" (185 x 89 x 61 mm)
Weight: About 15 1/2 oz (440 g) (including battery and holster)
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TECHNICAL SPECIFICATIONS
TECHNICAL SPECIFICATIONS
DC VOLTAGE
Readings are accurate for a period of 1 year after calibration at 64 to
82ºF (18 to 28ºC), with relative humidity up to 75%.
Accuracy specifications take the form of:
± [(% of Reading) + (Number of Least Significant Digits)]
Input Impedance: 10 M
Max. Allowable Input Voltage: 600 V DC
［1］If the voltage being measured is >600 V, the display may show
the value of the voltage, but the measurement is dangerous.
NOTE: The 600 V range is accurate from 20 to 100% of range.
Range
400 mV
4 V
40 V
400 V
600 V
± (0.8% + 5)
“OL” shown on
the display
See［1］± (1.0% + 5)
0.1 mV
1 mV
10 mV
0.1 V
1 V
Resolution Accuracy
Overrange
Indication
model no. 052-0052-2 | contact us 1-800-689-9928
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TECHNICAL SPECIFICATIONS
“OL” shown on
the display
“OL” shown on
the display
See［1］
Overrange
Indication
Overrange
Indication
DC CURRENT
Range
400 A
4000 A
40 mA
400 mA
4 A
10 A
0.1 A
1.0 A
0.01 mA
0.1 mA
1 mA
10 mA
± (1.0% + 7)
± (1.5% + 7)
Resolution Accuracy
AC VOLTAGE
Input Impedance: 10 M
Frequency Range: 40 – 400 Hz
Response: Average, calibrated in RMS of sine wave
Max. Allowable Input Voltage: 600 V AC RMS
［1］If the voltage being measured is >600 V, the display may show
the value of the voltage, but the measurement is dangerous.
NOTE: The 600 V range is accurate from 20 to 100% of range.
Range
4 V
40 V
400 V
600 V
± (0.8% + 5)
± (1.2% + 5)
1 mV
10 mV
0.1 V
1 V
Resolution Accuracy
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TECHNICAL SPECIFICATIONS
“OL” shown on
the display
Overrange
Indication
Overload Protection:
400 mA/600 V FAST fuse (for protection for "INPUT" terminal inputs)
10 A/600 V FAST fuse (for protection for "10A" terminal inputs)
Max. Allowable Input Current: 10 A
(For inputs > 2 A: duration < 10 secs, interval >15 minutes)
NOTE: The 10 A range is accurate from 20 to 100% of range.
Overload Protection:
400 mA/600 V FAST fuse (for protection for "INPUT" terminal inputs)
10 A/600 V FAST fuse (for protection for "10A" terminal inputs)
Max. Allowable Input Current: 10 A
(For inputs > 2 A: duration < 10 secs, interval >15 minutes)
Frequency Range: 40 – 400 Hz
Response: Average, calibrated in RMS of sine wave
NOTE: The 10 A range is accurate from 20 to 100% of range.
AC CURRENT
Range
400 A
4000 A
40 mA
400 mA
4 A
10 A
0.1 A
1.0 A
0.01 mA
0.1 mA
1 mA
10 mA
± (1.8% + 10)
± (2.5% + 10)
Resolution
Accuracy
model no. 052-0052-2 | contact us 1-800-689-9928
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TECHNICAL SPECIFICATIONS
“OL” shown on
the display
Overrange
Indication
Open Circuit Voltage: < 0.7 V
RESISTANCE
Range
400
4 k
40 k
400 k
4 M
40 M
0.1
1
10
100
1 k
10 k
± (1.0% + 5)
± (3.0% + 10)
± (1.5% + 5)
Resolution Accuracy
Input Voltage: 1 – 20 V RMS
NOTE: Frequency measurements are autoranging.
FREQUENCY
Range
9.999 Hz
99.99 Hz
999.9 Hz
9.999 kHz
99.99 kHz
999.9 kHz
9.999 MHz
0.001 Hz
0.01 Hz
0.1 Hz
1 Hz
10 Hz
100 Hz
1 kHz
± (1.0% + 5)
not specified
Auto-range
Resolution Accuracy Remark
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TECHNICAL SPECIFICATIONS
NOTE: Use Relative mode to subtract the residual capacitance of the
test leads and the meter.
If the capacitance being measured is ＞ 1000 µF, the display
may show a reading, but the measurement error may be
large. If the capacitance being measured is ＞ 4000 µF, “OL”
will be shown on the display.
CAPACITANCE
Range
40 nF
400 nF
4 F
40 F
400 F
1000 F
10 pF
100 pF
1 nF
10 nF
100 nF
1 F
± (2.5% + 5)
± (3.5% + 5)
± (4.0% + 5)
± (3.5% + 20)
not specified
± (5.0% + 5)
Resolution Accuracy
Input Voltage: 4 – 10 V P-P
Frequency Range: 4 Hz – 1 kHz
DUTY CYCLE
Range
5 – 95% 0.1% Auto-range
Resolution Remark
Auto-range
Remark
± ( 2.0% + 7 )
Accuracy
model no. 052-0052-2 | contact us 1-800-689-9928
17
TECHNICAL SPECIFICATIONS
1.
CONTINUITY
OPERATING INSTRUCTIONS
USING RELATIVE MODE
Relative mode is available in some functions. Selecting relative mode
causes the meter to store the present reading as a reference for
subsequent measurements.
Press the "REL" button. The meter enters Relative mode and
stores the present reading as a reference for subsequent
measurements. The symbol "REL" appears as an indicator and
the display reads zero.
Range
The built-in buzzer will sound if the resistance
is less than about 20 .
The buzzer may or may not sound if the
resistance is between 20 and 150 .
The buzzer will not sound if the resistance is
more than 150 .
Description
DIODE
Range
The display shows the
approx. forward voltage
drop of the diode.
Open Circuit Voltage:
about 3 V
Test Current: about 0.8 mA
Description Remark
18
OPERATING INSTRUCTIONS
DATA HOLD MODE
Press the HOLD button to hold the present reading on the display.
" " appears on the display as an indicator. To exit Data Hold mode,
just press this button again. " " disappears.
MANUAL RANGING AND AUTORANGING
The meter defaults to autorange mode in measurement functions
which have both autorange mode and manual range mode. When the
meter is in autorange mode, the symbol "AUTO" is displayed.
2.3.When you perform a new measurement, the display shows the
difference between the reference and the new measurement.
To exit Relative mode, just press the "REL" button again. The
symbol "REL" disappears.
1.2.Press the RANGE button. The meter enters manual range mode
and the symbol "AUTO" disappears.
Each press of the RANGE button increases the range. After the
highest range, the meter wraps to the lowest range.
To exit manual range mode, press and hold down the
RANGE
button for more than about 2 seconds. The meter returns
to
autorange mode and "AUTO" is displayed.
NOTE:
When in Relative mode, the actual value of the object under test must
not exceed the full-scale value of the selected range. Use a higher
measurement range if necessary.
model no. 052-0052-2 | contact us 1-800-689-9928
19
OPERATING INSTRUCTIONS
MEASURING DC VOLTAGE
1.
2.
3.
4.
1.
2.
Connect the black test lead to the "COM" terminal and the red
test lead to the "INPUT" terminal.
Set the function switch to the V position.
Connect the test leads across the source or circuit to be tested.
Read the reading on the display. The polarity of the red lead
connection will be indicated as well.
NOTE:
To avoid electric shock to you or damage to the meter, do not
apply a voltage higher than 600 V between terminals.
In manual range mode, when the display shows “OL”, a higher
range should be selected.
20
OPERATING INSTRUCTIONS
MEASURING AC VOLTAGE
1.
2.
3.
4.
Connect the black test lead to the "COM" terminal and the red
test lead to the "INPUT" terminal.
Set the function switch to the V position.
Connect the test leads across the source or circuit to be tested.
Read the reading on the display.
1.
2.
NOTE:
To avoid electric shock to you or damage to the meter, do not
apply a voltage higher than 600 V between terminals.
In manual range mode, when the display shows “OL”, a higher
range should be selected.
model no. 052-0052-2 | contact us 1-800-689-9928
21
OPERATING INSTRUCTIONS
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