Maxwell 25201 User Manual

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DIGITAL MULTIMETER

DIGITÁLIS MULTIMÉTER

MULTIMETRU DIGITAL

DIGITÁLNY MULTIMETER

Product code / Termékkód / Cod produs / Kód produkta:

25201

EN

HU

RO

SK

i

VC890C+

EN

User Manual User Manual

EN

sUMMary

This broad-spectrum measurement device
enables you to measure DCV, ACV, DCA, ACA,
resistance, capacity, diode, transistor, continuity
and temperature. Ideal for using in laboratories,
factories and even at home.

safety reMarks

This device complies to the IEC10101 standards.
Read the manual carefully before use.

• Do not measure a higher value than the set

range.

• To avoid electric shock make sure that the

measuring wires are intact.

• Disconnect the measuring wires while

changing function.

• Select the proper function and range, avoid

incorrect usage.

• Do not use the device if the battery holder lid

and back cover are not in their places.

• Do not measure voltage while in resistance

measuring mode.

• Remove the wires and turn the device o

before replacing the battery or fuse.

• Safety signs:

Dangerous voltage
Grounding

Double insulation
Low battery power

CHaraCteristiCs

Display LCD display

Max. value display:

4 digit automatic
polarity display

Low battery power
display

Operating
environment

(0-40) °C, R. H. 80%.

Battery

9V X 1 (NEDA
1604/6F22 or same
type)

Dimensions 175 X 93 X 55 mm
Weight 400g (with batter y)

teCHniCal data

DCV

Range Accuracy Resolution

200mV

±0.5%

100μV

2V 1mV

20V 10mV

200V 100mV

1000V ±0.8% 1V

Input resistance: 5m Ω at mV range , other
ranges: 10 mΩ

ACV

Range Accuracy Resolution

2V

±0.8%

1mV

20V 10mV
200V 100mV
750V ±1.2% 1V

Input resistance: 10MΩ
Overload protection: 1000V DC or AC peak value
Frequency response : (40~200)Hz

DCA

Range Accuracy Resolution

200μA

±0.8%

100nA

20mA 10μA

200mA ±1.2% 100μA

20A ±2.0% 10mA

Max. inward current

20A (testing time
should be 10 sec
max)

Fuse

0,2A/250V and 20A /
250 V fast fuse

ACA

Range Accuracy Resolution

20mA

±(1.5%+5)

10μA

200mA 100μA

20A ±(3.0%+10) 10mA

Max. inward current

20A (testing time
should be 10 sec
max)

Fuse

0,2A/250V and 20A /
250 V fast fuse

Resistance

Range Accuracy Resolution

200Ω ±0.8% 0.1Ω

2kΩ

±0.8%

1Ω

20kΩ 10Ω

200kΩ 100Ω

2MΩ 1kΩ

20MΩ ±1.0% 10kΩ

WARNING:
Do not measure voltage while in resistance
mode!

Capacity

Range Accuracy Resolution

2 nF ±(5.0%+40) 1pF

20nF

±(2.5%+20)

10pF

2-200μF 1-1000nF

2000μF ±(5.0%+10) 1 μF

Measuring frequency 150 Hz
Overload protection 36 V DC / AC RMS

Temperature

Range Accuracy Resolution

(-20~1000)°C

< 400°C±0,8%
> 400°C±1,5%

1°C

with a K type temperature sensor

Diode and continuity test

Function Description Test state

Opening voltage

Positive DC

voltage

appr. 1mA

negative volt-

age appr. 3V

Beeping if the re-

sistance is lower

than (70±20)Ω

Opening volt-

age appr. 3V

Triode hFE test

Function Description Test state

hFE NPN

or PNP

0~1000

Opening

voltage appr.

10μA

Opening

voltage appr.

3V

OperatiOn

1. Model no.

2. LCD display

3. Diode signal light

4. Function switch

5. „+” connector : 20A

6. „+” connector : mA+ capacity + temperature

7. „-” connector: ground (GND) + capacity+
temperature

8. „+” connector: voltage, resistance, diode,
continuity test

9. Transistor connector

10. Backlight/Auto Power O

EN

User Manual User Manual

EN

DCV measuring

• Connect the black measuring wire to the

„COM” connector, and the red one to the „V/Ω”
connector.

• Set the function switch to the proper DCV

setting, and connect the wires to the circuit.

Note:

• If you are unsure about the measured voltage range, set

the function switch to a high range.

• If the LCD shows „1” it means overload, and the range

should be set to a higher value.

ACV measuring

• Connect the black measuring wire to the

„COM” connector, and the red one to the „V/Ω”
connector.

• Set the function switch to the proper ACV

setting and connect the wires to the circuit.

Note:

• If you are unsure about the measured voltage range, set

the function switch to a high range.

• If the LCD shows „1” it means overload, and the range

should be set to a higher value.

DCA measuring

• Connect the black measuring wire to the

„COM” connector, and the red one to the „mA”
connector (max. 200mA), or connect the red
wire to the „20A” connector (max. 20A).

• Set the function switch to the proper DCA

setting and connect the wires to the circuit.

Note:

• If you are unsure about the measured voltage range, set

the function switch to a high range.

• If the LCD shows „1” it means overload, and the range

should be set to a higher value.

• Max inward current 200mA or 20A (depending on the

placement of the red wire), in case of an exceeding
current the fuse will melt.

ACA measuring

• Connect the black measuring wire to the

„COM” connector, and the red one to the „V/Ω”
connector.

• Set the function switch to the proper ACA

setting, and connect the wires to the circuit.

Note:

• If you are unsure about the measured voltage range, set

the function switch to a high range.

• If the LCD shows „1” it means overload, and the range

should be set to a higher value.

• Max inward current 1000V.

Resistance measuring

• Connect the black measuring wire to the

„COM” connector and the red one to the V/Ω
connector.

• Set the function switch to the proper

resistance setting and connect the wires to the
measured resistor.

Note:

• If the measured resistance value is over the chosen max

value the LCD will show „1” and the function switch
needs to be set to a higher range. It may take a few
seconds for the device to stabilize when measuring
above 1MΩ

Capacity measuring

• Connect the wire to the „V/Ω „ connector and

the red one to the „COM” connector.

• Set the function switch to a proper capacity

setting and connect the wires to the measured
capacitor.

Note:

• If you are unsure about the measured capacity set the

function switch to a high range.

• If the LCD shows „1” it means overload and the function

switch needs to be set to a higher range.

• To be safe, discharge the measured capacitor before

measuring.

Diode and continuity test

• Connect the black measuring wire to the

„COM” connector, and the red one to the „V/Ω”
connector (Note: the red wire's polarity is „+”)

• Set the function switch to the „ ” position,

connect the wires to the measured diode.

• Connect the wires to the diode's measuring

points, if the device beeps, the resistance is
lower than appr. (70±20)Ω

Temperature measuring

• Connect the red wire to the mA, and the black

one to the "COM" connector. Touch the end
of the thermometer to the measured object
and the temperature value is displayed on the
screen in degrees Celsius.

hFE

• Set the function switch to hFE.

• Place the part into the transistor connector

depending on whether it is NPN or PNP type.

Automatic turn-o

• If the device is not used for 15 minutes it turns

o automatically. To use it again, turn the
function switch.

Background lighting

• Push the button „10” shortly to switch on or o

the background lighting.

Auto Power O

• Push the button „10” long to cancel the auto

power o function. If the inscription „APO”
appears on the display, the device does not
switch o automatically.

MaintenanCe

• Note that this device is not water-, dust- and

shock-resistant.

• Do not use and do not store the device at high

temperatures, in places with high humidity or
ammability or in strong magnetic elds.

• Do not use rough textile or alcohol.

• If the device is not being used for a longer

time period, the battery must be taken out.

Battery replacement (1 x 9V)

If the LCD display shows „ ” , the battery
needs to be replaced the following way:

• Take the device out of the plastic holder and

take o the battery holder cover.

• Take out the battery and replace it to a new

one. Use alkaline batteries if possible.

• Put the battery holder cover back.

Fuse replacement

• Only used the prescribed types of fuses for

replacing.

If the device does not operate properly,
check the following:

State Solution

Nothing is displayed

• Device is turned

o

• Replace the

battery

„

” is displayed

Replace the battery

No power Replace the fuse