Pro's Kit MT-3110 Bedienungsanleitung

MT-3110

Intelligent Digits AC Clamp Meter

User’s Manual

1st Edition,

1.Safety Information

Warnings

Special attention shall be paid when using the meter, improper use might

cause an electric shock or damage the meter. General safety procedures shall be

followed during the use and safety measures regulated by the instruction manual

shall be completely respected.

To fully make use of the functions of the meter and ensure safe operation,

please carefully read and follow the use method of this manual.

The meter meets IEC-61010-1, IEC-61010-2-030, IEC-61010-2-032）Safety

Requirements for Electronic Measuring Instruments, of the secondary pollution,

over-voltage standard is CATIII 600V。

Please follow the safe operation guidance and ensure to use the meter in

safe.

1.1 Preparations

When use the meter, users must comply with the standard safety rules:

- General protection against electric shock

- Prevent misuse of the meter

After received the meter, check if it has been damaged during the delivery.

After been kept and delivered in shoddy conditions, check and confirm if the

meter is damaged or not.

Thetest lead must be in good condition. Before use, check thetest lead see if any

damage to the insulation, if the metal wire of the cable is bare.

1.2 Marks

Note (important security information, see the Instruction Manual)

It can be used on hazardous live conductors.

Double insulation protection (Category II)

CATIII follows the over-voltage (Setup) level III of IEC-61010-1 standard and

pollution degree 2 means the impulse withstand voltage level of

protection provided.

In line with the European Union (EU) Standard

Grounding

1.3 Maintenance

Please do not attempt to open the bottom case to adjust or repair the meter, such

operation could only be performed by technicians fully aware of the meter and

the risk of electric shock.

Before opening the meter case or battery cover at the end, thetest lead should be

removed from the circuit being measured.

To avoid electric shock that might be caused by erroneous readings, when the

meter displays “ ” symbol, the battery should be replaced immediately.

Use a damp cloth and mild detergent to clean the meter, do not use abrasive

cleaning agents or solvents.

Power supply of the meter should be turned off when not in use, range switch to

the OFF position.

If the meter is not used for a long time, batteries should be removed to prevent

damage to the meter.

2.Descriptions

2.1 Part Name

①Non-contact voltage detection sensing area

②Rotary switch

③Non-contact voltage detection button

④Display screen

⑤Input socket

⑥Data hold /Back Light button

⑦Maximum button

⑧Trigger

⑨Current clamp head: used for measuring current

2.2 Instructions to rotary switch and key as well as input socket

OFF: Meter OFF position

Measuring position

DC voltage, AC voltage, resistance and buzzer input terminals

Current input into mutual inductor

2.3 LCD Display Unit

DC ,AC

DC, AC voltage or Ampere

Connected disconnect indicate

LOW BATTERY

MAX

Maximum current measurement

Automatic shutdown indicate

NCV

Non-contact voltage detection

Readings hold status

Hertz

Ω, kΩ, MΩ

Ohm, Kilohm, Megohm (resistance)

Volt (voltage),

Ampere (current)

3.Specifications

The meter should specify one year as a cycle to re-calibrate in the conditions

of 18℃ ～ 28℃ and relative humidity less than 75.

3.1 Overview

Automatically select measurement function and range.

Overload protection for the whole measurement range.

Maximum allowable voltage between the measuring terminal and the Earth: 600V

DC or 600V AC

Work height: maximum 2000m

Display: LCD

Maximum display value: 6000 digits.

Polar indication: automatically indicate,‘-’ means negative polarity.

Over range Indication: ‘0L’ or ‘-0L’.

Sampling time: about 3 times/s

Unit display: with function and quantity of electricity unit display

Automatic Power off time: 10 minutes

Power supply: 1.5V AAA battery ×2

Battery low voltage indication: LCD display symbol.

Temperature coefficient: < 0.1×Accuracy/℃

Working temperature: 18℃ ～28℃

Storage temperature: -10℃ ～50℃

3.2 Technical Index

AC Current

Measurement

range

Resolution

Accuracy

0.001A

（2.5% reading + 8 digits）

60A

0.01A

400A

0.1A

400A~600A

0.1A

（3% reading + 10 digits）

Minimum input current: 0.05A AC current

Maximum input current: 600A AC current

Frequency range: 45～65Hz;

When in AC current measurement, the meter automatically switches on

internal low pass filter to filter out high frequency current, low pass filter

bandwidth is 1kHz (-3dB)

DC Voltage

Measurement

range

Resolution

Accuracy

0.001V

（0.5% reading +3 digits）

60V

0.01V

600V

0.1V

Minimum input voltage: 0.3V DC

Maximum input voltage: 600V DC

AC Voltage

Measurement

range

Resolution

Accuracy

0.001V

（0.8% reading +5 digits）

60V

0.01V

600V

0.1V

Minimum input voltage: 1.0V AC

Maximum input voltage: 600V AC (effective value)

Frequency range: 45 ~ 65Hz

Frequency

Clamp head frequency measurement (Pass A position):

Measurement

range

Resolution

Accuracy

40~60.0Hz

0.1Hz

（1.0% reading + 5 digits）

60.0~1000Hz

1Hz

Measurement range: 40Hz ~ 1000Hz

Input signal range: ≥ 0.2A AC current (effective value)

Pass V position:

Measurement

range

Resolution

Accuracy

40~60.0Hz

0.1Hz

（1.0% reading + 5 digits）

60.0~1000Hz

1Hz

Measurement range: 40Hz ~ 1000Hz

Input signal range: ≥ 1V AC voltage (effective value)

Resistance

Measurement

range

Resolution

Accuracy

6k

0.001k

（0.8% reading +3 digits）

60k

0.01k

600k

0.1k

6M

0.001M

10M

0.01M

Overload protection: 600V DC or AC (effective value)

Continuity

Measurement

range

Resolution

Functions

1

If the resistance of circuit

being measured is less than

30, then the beeper in the

meter may sound.

Overload protection: 600V DC or AC (effective value)

4.Operation Guide

4.1 Readings Hold

During the measuring process, if the readings are required to hold, slightly

touch "Hold/BL" key ,the display value will be locked, slight press "Hold/BL" key

again to cancel readings hold.

4.2 Back Light

1）In the process of measurement, if the ambient light is too dim, causing reading

difficulties, press "Hold/BL" key for about 2s, open Back Light and it will

automatically off after about 1 minute.

2）During the process if press "Hold/BL" key for about 2s, then the Back Light will

be turned off.

4.3 Auto Power Off

1）If after 10 minutes when the meter is on without any operation, it will go into

hibernation and automatically shut down to save power. Before the meter off,

there will be one sound of the buzzer to remind every 1 minute.

2）Press the NCV key after auto power off to wake the meter into working status.

4.4 Measurement Preparations

1）Turn the transfer switch, turn on the power. If the battery voltage is low (of

about ≤2.4V), the LCD will show“ ”symbol, then the battery shall be

replaced.

2）When the meter has not entered into

measurement, it will automatically enter into

the status of automatic scan, the meter

displays as the following diagram shows.

4.5 AC Current Measurement

1）Hold the trigger, open the clamp head and clamp one cable of the measured

circuit.

2）When measured signal >0.05A, the main LCD of the meter displays the

measured current value, the vice LCD displays current frequency (Note: When

the frequency ＞300Hz, only when current value >0.2A could the meter

displays its frequency value)

3）When measured circuit, slightly touch MAX key, when capture current >0.05A,

the meter displays the maximum current value captured. the meter displays as

the following diagram

Note:

1）Clamp two lines of the measured circuit

or more at the same time will not obtain correct measurement results.

2）To obtain accurate readings, try to enable the measured cable in the middle

position of the current clamp.

3）In the maximum capture current mode, the meter only measures current, it will

not measure voltage, frequency and resistance at the same time.

4.6 Non-contact Voltage Detection (NCV)

1）Press NCV key, enable NCV function, the meter displays

2）Put the clamp NCV sensor square close to the measured cable, the meter could

detect if the measured cable is >90V AC

voltage or not. When the meter detects AC

voltage, the meter buzzer alarms and the

backlight flashes.

Note:

1）Even there is no alarm indication, the

voltage might still exist. Do not judge if there exist voltage or not in the cable

relying on non-contact voltage detector. The detection operation might be

affected by various factors such as the socket design and insulation thickness

types are different and so on.

2）In NCV detection mode, the meter will not measure the voltage, resistance and

current at the same time.

4.7 DC Voltage Measurement

1）Connect the test lead to the measured signal, when the measured signal ≥0.3V,

will the meter display current measuring DC voltage value. When measured

signal is <0.3V, the meter will be default as resistance value, displays the ohm

of the measured signal.

4.8 AC Voltage Measurement

1）Connect the test lead to the measured signal, when the measured signal ≥1V,

will the main LCD of the meter display current measuring AC voltage value,

and the vice LCD will display the frequency value of the voltage. When

measured signal is ＜1V, the meter will be default as resistance value, displays

the ohm of the measured signal.

4.9 Resistance Measurement

1）Connect the test lead to the measured resistance, when the measured resistance

>10M, the meter will display----, when the measured resistance is less than

30, the meter buzzer will send out alarm sound.

4.10 Measure AC current and AC voltage at the same time

1）Hold the trigger, open the clamp head and clamp one cable of the measured

circuit, when the measured signal >0.05A, the meter vice LCD will display

measured current value.

2）Connect the test lead to the measured signal, when the measured signal ≥1.0V,

the meter main LCD will display current measured AC voltage value. When

measured signal is <1.0V, the meter will be default as resistance value,

displays the ohm of the measured signal.

4.11 Measure AC current and DC voltage at the same time

1）Hold the trigger, open the clamp head and clamp one cable of the measured

circuit, when the measured signal ≥0.05A, the meter vice LCD will display

measured current value.

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