Prokit's Industries MT-1233С User Manual

MT-1233C/MT-1233D
3-1/2 Digital Multimeter

User’s Manual

st

Edition, 2013

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©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

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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.



Inspect the test leads for damaged insulation or

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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

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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,

CAT II From equipment supplied from the fixed

CAT III From equipment in fixed equipment

General specifications

 Maximum Voltage between any Terminal and

 Measurement rata: updates 2-3/sec.
 Over range indication: "1' figure only in the display
 Automatic negative polarity indication.
 The

 operating temperature: 0℃～40℃, 0-75% RH.

e.g., electric circuits or a copy machine

installation, e.g., TVs, PCs, portable tools
and household appliances

installations, e.g. installation panels,
feeders and short branch circuits, and
lighting systems in large buildings.

Earth Ground: 1000V

is displayed when the battery voltage

drops below the operating voltage

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 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

Accuracies are guaranteed
less than 80%RH

for 1 year, 23℃±5 ℃,

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DC VOLTAGE

Range Resolution Accuracy
200mV 100uV

2000mV 1mV
20V 10mV
200V 100mV

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
RESPONSE: Average responding, calibrated in rms
of a sine wave.
FREQUENCY RANGE: 40Hz ～400Hz
OVERLOAD PROTECTION: 500V DC or 500V rms
for all ranges.

±0.8%+3d

±1.2%+5d

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DC CURRENT

Range Resolution Accuracy

2000uA 1 uA

20mA 10 uA

±(1.2%+5d)
200mA 100 uA
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
200Ω 0.1Ω ±(1.5%+5d)
2000Ω 1Ω

20kΩ 10Ω
200kΩ 100Ω
20MΩ 10KΩ ±(1.0%+5d)
200MΩ 100KΩ - ±[1.0%(rdg

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℃

-40℉~302℉ ±(1.0%+4d)

302℉~1832℉

WARNING: DO NOT input any voltage at this

range for safety!

Resolution MT-1233C MT-1233D

±(1.0%+3d)

-l0)+10d]

1℃

1℉

±(1.5%+15d)

±(1.5%+15d)

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