Maxwell 25303 User Manual

DIGITAL MULTIMETER

DIGITÁLIS MULTIMÉTER

MULTIMETRU DIGITAL

DIGITÁLNY MULTIMETER

Product code / Termékkód / Cod produs / Kód produkta:

25303

User ManUal

Használati Utasítás

ManUal de Utilizare

Užívateľská prírUčka

EN

HU

RO

SK

i

VC97

EN

User Manual User Manual

EN

General description

Display

4 digit liquid crystal
display

Polarity

Automatic negative
polarity display

Nullication automatic
Overload display only „OL” is displayed

Low battery power

the (

) symbol
appears on the
screen

Safety prescriptions

CE EMC/LVD. Device
complies to IEC1010
standard

Protection category II, double insulation

Operating
environment

temperature: 0…40
°C, relative humidity:
< 80%

Storage
environment

temperature: -10…50
°C, relative humidity:
< 80%

Battery 9 V battery

Dimensions

190 mm x 88,5 mm x
27,5 mm

Weight

appr. 420g (with
batteries)

Electrical

characteristics

Accuracy +/- (% of

displayed value + number

of digits) at 23 +/-5 °C, <

75% relative humidity

DC voltage

Range Accuracy Resolution

400 mV

+/- (0,5%

+ 4)

0,1 mV

4 V 1 mV

40 V 10 mV

400 V 100 mV

1000 V

+/- (1,0%

+ 4)

1 V

Impedance 10 MΩ
Overload protection 1000 VDC

AC voltage

Range Accuracy Resolution

400 mV

+/- (1,5%

+ 6)

100 μV

4 V

+/- (0,8%

+ 6)

1 mV

40 V 10 mV

400 V 100 mV

750 V

+/- (1,0%

+ 6)

1 V

Impedance 10 MΩ
Overload protection 750 V AC
Measuring frequency range 40Hz-1 KHz

Resistance

Range Accuracy Resolution

400 Ω

+/- (0,8%

+ 5)

0,1 Ω

4 kΩ

+/- (0,8%

+ 4)

1 Ω

40 kΩ 10 Ω

400 kΩ 100 Ω

4 MΩ 1 kΩ

40 MΩ

+/- (1,2%

+ 5)

10 kΩ

No load output voltage 400 mV

Overload protection

250V DC/AC
RMS

DC current

Range Accuracy Resolution

400 μA

+/- (1,0%

+ 5)

0,1 μA

4 mA 1 μA

40 mA 10 μA

400 mA 100 μA

10 A

+/- (1,2% +

10)

10 mA

Overload
protection

0,5 A / 250 V „F” mark fuse, 10 A
/ 250 V fuse

AC current

Range Accuracy Resolution

400 μA

+/- (1,5%

+ 5)

0,1 μA

4 mA 1 μA

40 mA 10 μA

400 mA 100 μA

10 A

+/- (2,0% +

15)

10 mA

Overload
protection

0,5 A / 250 V „F” mark fuse, 10 A
/ 250 V fuse

Frequency
range

40Hz-1 KHz

Capacity

Range Accuracy Resolution

4 nF

+/- (2,5%

+ 6)

1 pF

40 nF 10 pF

400 nF

+/- (3,5%

+ 8)

100 pF

4 μF 1 nF

40 μF 10 nF

200 μF +/- (5,0% +

8d)

100 nF

Overload
protection

250V AC/DC RMS

Diode test

Function Description Test state

Measures

the opening

voltage of the

diode

Opening DC

current appr. 0,5

mA

Closing DC

voltage appr.

1,5 V

If the resistance
between the V/

Ohm and the
COM is lower

than 50 Ω the

device beeps

Opening

voltage appr.

0,5 V

Overload protection

250 V DC / AC
RMS

Warning: Do not connect an outside power source to the
wires!

Frequency

Range Accuracy Resolution

100 Hz

+/- (0,5%

+ 4)

0,01 Hz

1000 Hz 0,1 Hz

10 kHz 1 Hz

100 kHz 10 Hz

1 MHz 100 Hz

30 MHz 1 kHz

Inward sensitivity 0,7 V

Overload protection

250 V DC / AC
RMS

Temperature

Range Accuracy Test state

(-20-1000)°C

<400°C

±(1.0%+5)

≥400°F

±(1.5%+15)

1°C

(-4-1832)°F

<752°C

±(1.0%+5)

≥752°F

±(1.5%+15

1°F

With a K type temperature measurement
sensor
Temperature measurement

• Set the function switch to the „C” position.

• Connect the probe's connector to the „K

TEMP” connector (note the polarity) and the
other end onto the measured surface. The
temperature is displayed on the screen in °C
units.

The device operates with a special temperature
measurement probe. If the probe is not connected to
the connector, the device shows the temperature of its
environment.
Do not connect external voltage to the connectors if the
device is in temperature measurement mode.

Transistor hFE test

Function Description Test state

h

FE

Measures the
amplication

factor of the

transistor(0-1000)

(All types)

Base current

appr. 10 μA

VCE appr. 3 V

EN

User Manual User Manual

EN

1. LCD: display the measuring value and unit.

2. Function key
2-1. Power and backlight switch: turn on/o the
power and backlight.
2-2. PK HOLD key: press it, the max. of presently
measured value is held on LCD and PH symbol
displays. Press it again, PH symbol disappears,
and the meter is exited the holding mode.
2-3. Transistor test jack.
2-4. DC/AC key set DC or AC working mode.

3. Range knob: to select measuring function
and range.

4. Voltage, resistance and frequency port

5. Common measuring port (COM)

6. Port for measuring current less than 200mA

7. Port for measuring current 20A

UsaGe

• The signs near the connectors warn if the

inward voltage or current values are above the
set values. These help to avoid damage to the
inner circuits.

• Set the proper function with the function

selection switch before measuring.

• If you do not know the measured value range,

set the switch to the highest available setting
and go backwards until you reach the proper
setting.

DC and AC voltage measurement

• Connect the black wire to the „COM” connector

and the red one to the „VΩHz” connector.

• By default the automatic range switch is

active, which is indicated by the AUTO sign on
the display. You can set the following ranges
manually by pressing the RANGE button: 400
mV/4 V/40 V/400 V/1000 V.

• Set the function selection switch to the proper

V setting and connect the wires parallelly for
the measurement.

DC and AC current measurement

• Connect the black wire to the „COM”, and the

red one to the „mA” or „10A” connectors for 400
mA or 10A measurement.

• Set the proper range with the function switch.

• Connect the connectors to the power source

parallelly.

• To measure current between 400 mA and 10 A

follow the instructions above, but connect the
red wire to the „10A” connector.

Resistance measurement

• Connect the black wire to the „COM” and the

red one to the „V/ΩHz” connector.

• Set the function switch to the desired

resistance range.

• Connect the wires parallelly.

• Press the "RANGE" button for selecting the

automatic/manual range.

Warning: Make sure the measured circuit is not under
power!

Capacity measurement

• Set the function selection switch to the -ll-

setting.

• Press the „REL” button to clear the display.

• Connect the black wire to the „COM” and the

red one to the „V/Ω” connector. Touch the
wires to the connectors of the capacitor. Pay
attention to the polarity.

Note:
Capacity measurement has automatic range selection.
Unit: 1 nF=10-3 μF or 1000 pF.
Do not connect an external voltage source or a
charged capacitor (especially high capacity ones)
to the connectors. Discharge the capacitors before
measurement. Electrolyte capacitors should be
discharged multiple times.

Diode and continuity test

• Connect the black wire to the „COM” connector

and the red one to the „VΩHz” connector.
(Note: the polarity of the red wire is +)

• Set the function switch to the position.

• Touch the wires to the connectors of the

diode. The display shows the opening voltage
of the diode.

• Connect the wires to the two points of the

circuit. If the resistance is below 50 Ω, the
device will beep.

Transistor hFE test

• Set the function switch to the hFE position.

• Determine whether the transistor is NPN or

PNP and place it into the proper connector
(this connector is included and connects to the
mA + COM connectors).

• The transistor's amplication factor is

displayed on the screen.
I = 15 μA, V = 1,5 VBC

Frequency measurement

• Connect the measuring wire or shielded cable

to the „COM” and „VΩHz” connectors.

• Set the function switch to „30MHz” and touch

the wires to the signal source.

Note:

• Do not measure frequency on higher voltage than

250V(RMS)

• In a noisy environment it is recommended to use a

shielded wire when measuring weak signals.

• Avoid touching the circuit when measuring high

voltage.

• Range selection is always automatic when measuring

frequency.

Duty cycle measurement

Set the function selection switch to 30MHz and
press the Hz/DUTY button once to measure
duty cycle.

Data hold function

By pressing the HOLD button the actual
measured value gets held on the screen until
the button is pressed again.

Warning

• When measuring voltage make sure that the wires do

not connect to the current measurement connector
and the function switch is not in a resistance or diode
measurement position. Always make sure that the wires
are connected to the proper connector.

• Take care when measuring voltage above 50V, especially

with high power devices.

• Avoid connecting to 'live' circuits.

• When measuring current make sure the circuit is not

under voltage before connecting the multimeter.

• Before measuring resistance and diode make sure the

power is disconnected for the time of measuring.

• Always use the proper function and measuring range.

If you are unsure about the range, select the highest
available and move backwards from that.

• Make sure that the measuring wires and their insulation

are intact.

• Be careful, do not go over the specied overload

thresholds.

• Only replace fuses to those of the same type and value.

• When opening the lid of the device for replacing fuses or

batteries make sure that all external power sources are
disconnected and the function switch is in OFF state.

HandlinG and
Maintenance

Handling

• Keep the multimeter dry at all times. If it

becomes wet, wipe it immediately. Liquid may
corrode the circuits.

• The multimeter may be stored and

operated only at normal temperatures. High
temperatures reduce the lifetime of electric
devices, damages the batteries and distorts/
melts the plastic parts.

• Handle the multimeter with care. Dropping

it may result in damage to the circuits and
the surface which may cause improper
functioning.

• Protect the multimeter from dust and other

dirt which may cause the untimely wearing of
the parts.

• Clean the multimeter with a wet cloth. Do not

use chemicals, solvents or strong detergents
for cleaning.

Maintenance

• Battery replacement (9 V)

• Disconnect all external circuits from the

device. Turn it o and remove all measuring
wires.

• Unscrew the bottom lid.

• Remove the depleted battery and replace to

one of the same type.

Fuse replacement

• Disconnect all external circuits from the

device. Turn it o and remove all measuring
wires.

• Unscrew the bottom lid.

• Remove the melted fuse and replace to one of

the same type and value.

HU

Használati utasítás Használati utasítás

HU

általános leírás

Kijelző

4 digites
folyadékkristályos
kijelző

Polaritás

automatikus negatív
polaritás kijelzés

Nullázás automatikus

Túlterhelés kijelzés

csak az „OL” felirat
látható

Alacsony
telepfeszültség

az(

)szimbólum

megjelenik a kijelzőn

Biztonsági előírás

CE EMC/LVD. A
műszer megfelel az
IEC1010 szabványnak

Érintésvédelmi
osztály

II, Kettős szigetelésű

Üzemi környezet

hőmérséklet:
0…40 °C, relatív
páratartalom: < 80%

Tárolási környezet

hőmérséklet:

-10…50 °C, relatív
páratartalom: < 80%

Elem 9V jelzésű elem

Méretek

190 mm x 88,5 mm x
27,5 mm

Tömeg kb. 420g (elemekkel)

Elektromos

jellemzők

A pontosság +/- (kijelzett érték

%-a + digitek száma) 23 +/-5
°C-on, 75%-nál kisebb relatív

páratartalom esetén

DC feszültség

Méréshatár Pontosság Felbontás

400 mV

+/- (0,5%

+ 4)

0,1 mV

4 V 1 mV

40 V 10 mV

400 V 100 mV

1000 V

+/- (1,0%

+ 4)

1 V

Impedancia 10 MΩ

Túlterhelés elleni
védelem

1000 VDC

AC feszültség

Méréshatár Pontosság Felbontás

400 mV

+/- (1,5%

+ 6)

100 μV

4 V

+/- (0,8%

+ 6)

1 mV

40 V 10 mV

400 V 100 mV

750 V

+/- (1,0%

+ 6)

1 V

Impedancia 10 MΩ
Túlterhelés elleni védelem 750 V AC
Mérési frekvencia tartomány 40Hz-1 KHz

Ellenállás

Méréshatár Pontosság Felbontás

400 Ω

+/- (0,8%

+ 5)

0,1 Ω

4 kΩ

+/- (0,8%

+ 4)

1 Ω

40 kΩ 10 Ω

400 kΩ 100 Ω

4 MΩ 1 kΩ

40 MΩ

+/- (1,2%

+ 5)

10 kΩ

Terheletlen kimenő
feszültség

400 mV

Túlterhelés elleni védelem

250V DC/AC
RMS

DC áram

Méréshatár Pontosság Felbontás

400 μA

+/- (1,0%

+ 5)

0,1 μA

4 mA 1 μA

40 mA 10 μA

400 mA 100 μA

10 A

+/- (1,2% +

10)

10 mA

Túlterhelés
elleni
védelem

0,5 A / 250 V „F” jelzésű
biztosíték, 10 A / 250 V
biztosíték

AC áram

Méréshatár Pontosság Felbontás

400 μA

+/- (1,5%

+ 5)

0,1 μA

4 mA 1 μA

40 mA 10 μA

400 mA 100 μA

10 A

+/- (2,0% +

15)

10 mA

Túlterhelés
elleni
védelem

0,5 A / 250 V „F” jelzésű
biztosíték, 10 A / 250 V
biztosíték

Frekvencia
tartomány

40Hz-1 KHz

Kapacitás

Méréshatár Pontosság Felbontás

4 nF

+/- (2,5%

+ 6)

1 pF

40 nF 10 pF

400 nF

+/- (3,5%

+ 8)

100 pF

4 μF 1 nF

40 μF 10 nF

200 μF +/- (5,0% +

8d)

100 nF

Túlterhelés
elleni
védelem

250V AC/DC RMS

Dióda teszt

Funkció Leírás Teszt állapot

A dióda

nyitófeszült-

ségét méri

Nyitóirányú DC

áram kb. 0,5 mA

Záró irányú DC

feszültség kb.

1,5 V

Sípoló hang
jelzi, ha a V/

Ohm és a COM

csatlakozók

közötti

ellenállás

kisebb, mint

50 Ω

Nyitófeszültség

kb. 0,5 V

Túlterhelés elleni
védelem

250 V DC / AC
RMS

Figyelmeztetés: Ne csatlakoztasson a kapcsokra külső
feszültségforrást!

Frekvencia

Méréshatár Pontosság Felbontás

100 Hz

+/- (0,5%

+ 4)

0,01 Hz

1000 Hz 0,1 Hz

10 kHz 1 Hz

100 kHz 10 Hz

1 MHz 100 Hz

30 MHz 1 kHz

Bemeneti érzékenység 0,7 V
Túlterhelés elleni

védelem

250 V DC / AC
RMS

Hőmérséklet

Méréshatár Pontosság Teszt állapot

(-20-1000)°C

<400°C

±(1.0%+5)

≥400°F

±(1.5%+15)

1°C

(-4-1832)°F

<752°C

±(1.0%+5)

≥752°F

±(1.5%+15

1°F

K típusú hőmérsékletmérő szenzorral
Hőmérséklet mérés

• Állítsa a funkciókapcsolót a „C” állásba

• Helyezze a hőmérsékletmérő szonda

csatlakozóját a „K TEMP” aljzatba (ügyelve a
polarításra „-”) a másik végét pedig helyezze
a mérendő hőmérsékletű helyre. A kijelzőn a
mért hőmérséklet olvasható °C-ban.

A műszer speciális hőmérsékletmérő szondával működik.