ProsKit MT-1233C Manuale utente
MT-1233C/MT-1233D
3-1/2 Digital Multimeter
User’s Manual
1st Edition,2013
©2013 Copyright by Prokit’s Industries Co., Ltd.
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INTRODUCTION
Warning
To avoid electric shock or personal injury, read
"Safety Information" and is Warning and
Precautions" before using the Meter
Safety information
This series meter Comply with IEC 1010-1 CAT I
600V / CAT II 300V overvoltage standards. See
specifications
Use the Meter only as specified in this manual,
otherwise the protection provided by the Meter
may be impaired.
In this manual a Warming identifies conditions
and actions that pose hazards to the user.
A caution identifies conditions and actions that
may damage the meter ort he equipment under
test
International symbols used on the Meter and in
this manual are explained Table
2
Table 1. International Electrical Symbols
AC (Alternating Current)
DC (Direct Current)
AC or DC
Battery
Safety information* Refer to the manual
Earth ground
Fuse
Conforms to European Union directive
Double insulated
WARNING AND PRECAUTIONS
To avoid possible electric shock or personal injury,
and to avoid possible damage to the meter or to the
equipment under test, comply with the following
practices:
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.
3
Inspect the test leads for damaged insulation or
4
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 around explosive gas,
vapor, or dust.
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.
When servicing the meter, use only specified
replacement parts. Do not use the Meter in a
manner not specified by this manual or the safety
features of the meter may be impaired.
Use with caution when working above 30V ac rms,
42V ac peak, or 60V dc. Such voltages pose a
shock hazard.
When using the probes, keep your fingers behind
the finger guards on the probes.
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 door. Do not operate the meter
with the battery door or portions of the cover
removed or loosened.
To avoid false readings, which could lead to
possible
Safety Compliance: IEC 61010-1, 2000 CAT I
600V overvoltage standards Do not measure
voltages above 500V in Category installations
Overvoltage installations categories per IEC
61010-1, 2000: The meter is designed to protect
against transients in these categories:
CAT I From high-voltage low-energy sources,
e.g., electric circuits or a copy machine
CAT II From equipment supplied from the fixed
installation, e.g., TVs, PCs, portable tools
and household appliances
CAT III From equipment in fixed equipment
installations, e.g. installation panels,
feeders and short branch circuits, and
lighting systems in large buildings.
General specifications
Maximum Voltage between any Terminal and
Earth Ground: 1000V
Measurement rata: updates 2-3/sec.
Over range indication: "1' figure only in the display
Automatic negative polarity indication.
The is displayed when the battery voltage
drops below the operating voltage
operating temperature: 0℃～40℃, 0-75% RH.
5
Storage temperature: -10℃～50℃, 0-75% RH.
Power: Single standard 1.5V battery AAAx2
Dimensions: 130L*72W*28H mm
Weight approx: 130g (not including battery)
FRONT PANEL DESCRIPTION
1. LCD Display
2. DATA HOLD button
3. BACK LIGHT button
4. FUNCTION AND RANGE SWITCH
This switch is used to select the function and
desired range as well as to turn on the instrument.
To extend the life of this battery, the switch should
be in the "OFF" position when the instrument is
not in use.
5. “VΩmA" JACK
6. "10A" JACK
7. "COM" JACK
SPECIFICATIONS
6
Accuracies are guaranteed for 1 year, 23℃±5 ℃,
less than 80%RH
7
DC VOLTAGE
Range Resolution Accuracy
200mV 100uV
2000mV 1mV
20V 10mV
200V 100mV
±0.8%+3d
500V 1V ±(1.0%+3d)
OVERLOAD PROTECTION: 220V rms AC for
200mV range and 500V DC or 500V rms for all
ranges.
AC VOLTAGE
Range Resolution Accuracy
200V 100mV
500V 1V ±1.2%+5d
RESPONSE: Average responding, calibrated in rms
of a sine wave.
FREQUENCY RANGE: 40Hz ～400Hz
OVERLOAD PROTECTION: 500V DC or 500V rms
for all ranges.
DC CURRENT
Range Resolution Accuracy
2000uA 1 uA
20mA 10 uA
200mA 100 uA
±(1.2%+5d)
10A 10mA ±(2.5%+5d)
OVERLOAD PROTECTION: 200mA 250V fuse (10A
range unused).
MEASURING VOLTAGE DROP: 200mV
AUDIBLE CONTINUITY
RANGE DESCRIPTION
Built-in buzzer sounds if resistance
is less then 30±20Ω
OVERLOAD PROTECTION: 5 second maximum
220V rms.
WARNING: DO NOT input any voltage at this
range for safety!
SQUARE-WAVE OUTPUT (MT-1233D Only)
RANGE DESCRIPTION
The output of about 50Hz square
wave test signal
WARNING: DO NOT input any voltage at this
range for safety!
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RESISTANCE
Range Resolution MT-1233C MT-1233D
200Ω0.1Ω±(1.5%+5d)
2000Ω1Ω
20kΩ10Ω
200kΩ100Ω
±(1.0%+3d)
20MΩ10KΩ±(1.0%+5d)
200MΩ100KΩ- ±[1.0%(rdg
-l0)+10d]
MAXIMUM OPEN CIRCUIT VOLTAGE: 2.3V.
OVERLOAD PROTECTION: 5 seconds maximum
220Vrms.
WARNING: DO NOT input any voltage at
resistance range for safety!
TEMPERATURE (MT-1233C only)
RANGE RESOLUTION ACCURACY
-40℃~150℃±(1.0%+3d)
150℃~1000℃
1℃
±(1.5%+15d)
-40℉~302℉±(1.0%+4d)
302℉~1832℉1℉±(1.5%+15d)
WARNING: DO NOT input any voltage at this
range for safety!
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OPERATING INSTRUCTIONS
WARNING
To avoid electrical shock hazard and/or damage
of the Instrument, do not measure voltages that
might exceed 600V above earth ground.
Before the use of instrument, inspect test leads,
connectors and probes for cracks, breaks, cracks
in the insulation.
Dangerous voltages may be present at the input
terminals and may not be displayed.
To avoid electrical shock or damage to the meter
when measuring resistance or continuity in a
circuit, make sure the power to the circuit is
turned off and all capacitors are discharged.
DC & AC VOLTAGE MEASUREMENT
1. Connect red test lead to "VΩmA" jack, Black lead
to "COM" jack.
2. Set RANGE switch to desired VOLTAGE position,
if the voltage to be measured is not known before
hand, set switch to the highest range and reduce
it until satisfactory reading is obtained.
3. Connect test leads to device or circuit being
measured.
4. Turn on power of the device or circuit being
measured voltage value will appear on Digital
Display along with the voltage polarity.
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