Axio MET AX-102 Bedienungsanleitung

DIGITAL MULTIMETER

AX-102

OPERATION MANUAL

I.General

His is equipped with the LCD display of text height 18.9 mm, is a 3 ¾ digital multimeter which has

the merits of clear Reading, stable performance and high reliability. It could be used to measure DC

voltage, AC voltage, DC current, AC current, resistance , capacity, frequency/duty cycle, diode and

make on and off test. Meanwhile, it is available for unit symbol display, automatic/manual range

switching, automatic power off and alarm function. The complete machine takes an integrated

circuit which can directly drive LCD 8-bit microprocessor and double-integrating A/D switching and

a digital display drive offering high resolution and high precision. Due to its complete functions,

high measurement accuracy and convenient operation, the multimeter is the ideal tool in laboratory

and factory as well as for radio fans and family.

II.Open-package Inspection

Open the package box and take out the meter, check carefully if the following accessories are

absent or damaged. If there is any absence or damage, please contact the distributor immediately.

Digital Multimeter: 1PC

Instruction Manual: 1 copy

Test Leads: 1 pair

Temperature Probe (K-Thermocouple): 1 PC

III. Safety Considerations

The design of meter is in accordance with IEC1010 clause (the safety standard issued by

International Electrotechnical Commission). Prior to the operation of the instrument, please first

read the safety considerations.

1. When DC voltage above 30V, AC voltage above 25V, current above 10mA, AC power line with

inductive load or power line during electric fluctuation is measured, please beware of electric

shock.

2. Prior to measurement, check if the measurement function switch is at the correct position.

Check if the meter pen is contacted reliably, connected correctly, and grounded well and etc. in

order to avoid electric shock.

3. Only if the meter is used with the matched meter pen, can it meet the requirement of safety

standard. When the line of the meter pen is damaged, it is necessary to replace another one of the

same model or the same electrical specification.

4. Don’t use other unconfirmed or disapproved protector tube to replace the protector tube inside

the meter. Only the protector tube of the same model or same specifications can be replaced.

Before the replacement, the test leads must leave the measuring point and ensure there is no any

signal at the input terminal.

5. Don’t use other unconfirmed or disapproved battery to replace the battery inside the meter.

Only the battery of the same model or same electrical specification can be replaced. Before the

replacement, the test leads must leave the measuring point and ensure there is no any signal at the

input terminal.

6. When the electrical measurement is made, never let your body gets in touch with the ground

directly, and don’t touch uncovered metal terminal, output port, lead clamp and etc. where earth

potential may exist. Dry clothes, rubber shoes, rubber cushion and other insulating material are

usually used to keep your body insulated against the ground.

7. Don’t store and use it in the high-temperature, high-humidity, inflammable and strong magnetic

field environment.

8. It may do damage to the meter and endanger the operator’s safety if the voltage value beyond

the permitted ultimate voltage value is measured. The ultimate voltage value permitted for

measurement is marked on the instrument panel, and never measure the value exceeding the

standard. Don’t input the ultimate value out of regulation in order to avoid electric shock and the

damage to the meter.

9. When the test leads is inserted into the current socket, don’t measure any voltage for fear that

the meter should be damaged and operator’s safety be endangered.

10. Don’t try calibrating or repairing the meter. When necessary, only the qualified professional

personnel who have had special training or gained approval can make it.

11. During measurement, the requirement of measurement function must be in accordance with

LCD display. Please be sure to disconnect the line of the test leads with the measured object first

and ensure there is no any input signal. It is forbidden to switch the function/range selection switch

during measurement.

12. When “ ” is show on LCD display, please replace battery immediately to ensure the

measurement precision.

13. It is not allowed to insert the test leads into the current terminal to measure voltage!

14. Please don’t change the circuits of the meter freely for fear that the meter be damaged and the

safety be endangered.

15. Descriptions of safety symbols:

Warning!

DCA

High Voltage! Danger!

ACA

Ground

DCA & ACA

Double Insulation

In accordance wiyh the instructions

of European Trade Union

Battery Undervoltage

Fuse

IV. Instrument Panel & Button Function Description

1. Instrument Model Number

2. LCD Display: Display the measured data and unit.

3. Function Button

3.1. Hz/Duty (Frequency/Duty Cycle): Press this button to select the

frequency or duty cycle mode. The measurement mode of

voltage/frequency/duty cycle or current/frequency/duty cycle could

be selected by pressing this button in AC/DC voltage or AC/DC

current gear.

3.2. SELECT (Function Switch): Press this button, the function could

switch between DC/AC.

3.3. REL (Relative Value Measurement): The relative value

measurement of all functions could be conducted by pressing this

button except the Hz/Duty function

3.4. HOLD (Data Hold): Press this button, the reading is locked; Press it again, the lock is cleared

and enter normal measurement status.

4. Knob Switch: It could be used to change the measurement function and range.

5. Input Terminals

5.1. Current Voltage, Diode, Resistance, Capacity, Frequency, Buzzer, Temperature “-“ Input

terminal.

5.2. 10A “+”input terminal.

5.3. Voltage, Diode, Resistance, Capacity, Frequency, Buzzer, Temperature and “+” Input terminal

with current less than 200mA.

V. Other Functions

Automatic Power off

During measurement, the meter will automatically shut down (enter sleeping mode) to save power

if function buttons and knob switch are not operated in 15 minutes. In auto power off mode, press

any function buttons or rotate the knob switch, the instrument will get into the auto power on

mode (working mode); the auto power offer mode will be cancelled by pressing the HOLD button to

turn on the instrument.

VI. Property

1. General Property

1.1. Display: LCD

1.2. Max. Display: 3999 (3 ¾) counts automatic polarity display and unit display

1.3. Measuring Method: Dual integral A/D converter

1.4. Sampling Rage: Approx. 3 times/sec.

1.5. Over Range Indication: Display “OL”

1.6. Low Battery Indication: “ ” symbol appears.

1.7. Operation Environment: (0~40)°C, Relative Humidity: < 80%

1.8. Storage Environment: (0~50)°C, Relative Humidity: <80%

1.9. Power: 2 pcs 1.5V batteries (“AAA” 7#battery)

1.10. Dimension (size): 145x74x36 mm

1.11. Weight: Approx. 190g (Including 2 pcs

1.5V batteries)

1.12. Accessories: Instruction Manual (1pc),

Outer packing box (1pc),

10A test lead(1pair),

K-Thermocouple

2. Technical Properyty:

2.1. Accuracy: ±(% reading + digits), at (23±5)°C,

Relative humidity <75%,

One year calibration guarantee since the

time dispatched from the factory.

2.2. Technical Specifications:

2.2.1. DCV

1. Turn the knob switch to Range

2. The initiate state of the meter is in automatic range status, which shows “AUTO” symbol.

3. Make the test leads connected to the testing point. The voltage and polarity of the point where

the red test is contacted will be displayed on the screen.

Caution:

1.Don’t measure voltage over 600V. Otherwise, ther is a danger of meter being damaged.

2.When measuring high voltage, special attention should be given to personal safety and avoid your

body getting in touch with high voltage circuit.

Range

Accuracy

Resolution

400mV

±(0.5% + 4 d)

100µV

1mV

40V

10mV

400V

100mV

600V

±(1.0% + 4 d)

Input Impedence : 400m>40MΩ; 10MΩat other Ranges.

Overload Protection: 600V DC or 600V AC Peak Value.

2.2.2. ACV

1. Insert black test leads into the hole of “COM” and red one into

2. Rogate the function switch to gear, Press „SELECT” buton to selekt the AC measurement

mode.

3. The initiate state of the meter is in automatic range status, which shows “AUTO” symbol.

4. Make the test leads connected to the testing point. The voltage of the point where the red pen is

contacted will be displayed on the screen.

Caution:

1. Don’t measure voltage over 600V. Otherwise, there is a danger of meter being damaged.

2. When measuring high voltage, special attention should be given to personal safety and avoid your

body getting in touch with high voltage circuit.

Range

Accuracy

Resolution

±(0.8% + 6 d)

1mV

40V

10mV

400V

100mV

600V

±(1.0% + 6 d)

Input Impedance: >10MΩ

Overload protection: 600V DC or 600V AC Peak Value

Frequency Response: (50~200) Hz

Display: Average value response (RMS of sine wave)

2.2.3. DCA

1. Insert the black test lead into the “COM” input terminal and red one into the input

terminal. (Max 400mA), or 10A input terminal (Max 10A).

2. Rotate function switch to Current gear. The initiate state of the meter is in automatic range

status, which shows “DC” symbol. Then connect the test leads to the tested circuit in serial,

the tested current value and the current polarity of the point where the red one is contacted will

be displayed on the screen simultaneously.

Caution:

1. If “Ol” is displayed on LCD, it indicates the tested current value has exceeded the present range

limit, please select higher range to complete the measurement.

2. The Max input value is 400mA or 10A. (Depending on the terminal where the red test lead is

contacted).

Range

Accuracy

Resolutin

400µA

±(1.0% + 10 d)

0.1µA

4000µA

1µA

40mA

10µA

400mA

100µA

10A

±(1.2% + 10 d)

10mA

Max measurement voltage drop: Full Range mA is 0.4V, A is 100mV;

Max input current : 10A (less than 15 seconds);

Overload Protection: 0.4A/250V restorable fuse, 10A/250V fuse.

2.2.4. ACA

1. Insert the black meter pen into the “COM” input terminal and red one into the input

terminal. (Max 400mA), or 10A input terminal (Max 10A)

2. Rotate function switch to Current gear. Press “SELECT” button to select the AC measurement

mode. Then connect the test leads to the tested circuit in serial, the tested current value and the

current polarity of the point where the red one is connected will be displayed on the screen

simultaneously.

Caution:

1. If “OL” is displayed on LCD, it indicates the tested current value has exceeded the present range

limit, please select higher range to complete the measurement.

2. The Max input value is 400mA or 10A (Depending on the terminal where the red test lead is

contacted). The overrated current will lead to fuse melt or even damage the meter.

Range

Accuracy

Resolution

400uA

±(1.5% + 10 cyfr)

0.1uA

4000uA

1uA

40mA

10uA

400mA

100uA

10A

±(2.5% + 15 cyfr)

10mA

Max measurement voltage drop: Full Range mA is 0.4V, A is 100mV;

Max input current: 10A (less than 15 seconds)

Overload Protection: 0.4A/250V restorable fuse; 10A/250V fuse

Frequency Response: 10A Range (50~200) Hz

2.2.5. Resistance (Ω)

1. Insert the black meter pen into “COM” terminal and red one into terminal.

2. Rotate the Range to “Ω” gear. Cross connect the test leads to the tested resistor.

3. When measuring the low resistance, please short-circuit the meter pens at first to test the wire

resistance, and then deduct it from the actual resistance.

Caution:

1. If “OL” is displayed on LCD, it indicates the tested resistance value has exceeded the present

range limit, please select higher range to complete the measurement. When measuring the Resistor

higher than 1MΩ, the instrument will take several seconds to make the reading stable. It is normal

when measuring the high resistor.

2. When the input terminal is open circuit, it will display “OL”.

3. When measuring in-line resistor, be sure that the power is off and all capacitors are discharged

completely.

Range

Accuracy

Resolution

400Ω

±(0.8% + 5 d)

0.1Ω

4kΩ

±(0.8% + 4 d)

1Ω

40kΩ

10Ω

400kΩ

100Ω

4MΩ

1kΩ

40MΩ

±(1.2% + 10 d)

10kΩ

Open Voltage circuit: Less than 200mV

Overload Protection: 250 V DC or AC Peak Value

Note: When measuring at Range 400Ω, please short-circuit the meter pens at first to test wire

resistance, and then deduct it from the actual resistance.

2.2.6. Diode and Continuity Test

1. Insert the black meter pen to “COM” terminal and the red one to terminal. (The polarity

of red test lead is “+”)

2. Rotate the Range to “ ” gear. Press „SELECT” button to select the Diode

measurement mode.

3. Forward Measurement: Connect the red test lead to the diode positive polarity and the black one

to the diode negative polarity. The approximate value of diode forward voltage drop will show on

the display.

4. Backward Measurement: Connect the red test lead to the diode negative polarity and the black

one to the diode positive polarity. “OL” symbol will be displayed on the screen.

5. The complete diode testing includes forward and backward measurement, if the result does not

meet the above; it means the diode is bad.

6. Press “SELECT” button to select the Continuity measurement mode.

7. Connect the meter pens to two points of the tested circuit. If the built-in buzzer sounds,

the resistance between the two points is less than 50Ω.

Range

Display

Test Condition

Forward Voltage Drop of

Diode

Forward DC Current is approx. 0.5mA, Backward

Voltage is approx. 1.5V

Buzzer makes a long sound if

resistance is less tan 50Ω

Open circuit voltage is approx. 0.5V

Overload Protection: 250V DC or AC Peak Value.

CAUTION: DO NOT INPUT VOLTAGE AT THIS RANGE!

2.2.7. Capacity (C)

1. Rotate function switch to “ ”

2. Insert the black test lead to “COM” terminal and red one to terminal.

3. Connect the tested capacity by the test leads to “COM”, , input terminal, the screen will

show capacitance parameter. (The relative value measurement could be conducted by pressing

“REL” button)

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