Velleman components DVM8264 Bedienungsanleitung

DVM8264 - 1 - VELLEMAN

DVM8264 – 3 ½ DIGITAL MULTIMETER – 30 RANGES

1. Introduction & Features

To all residents of the European Union

Important environmental information about this product

This symbol on the device or the package indicates that disposal of the device after its lifecycle could harm

the environment.

Do not dispose of the unit (or batteries) as unsorted municipal waste; it should be taken to a specialised

company for recycling.

This device should be returned to your distributor or to a local recycling service.

Respect the local environmental rules.

If in doubt, contact your local waste disposal authorities.

Thank you for buying the DVM8264! Please read the manual thoroughly before bringing this device into service. If the

device was damaged in transit, don't install or use it and contact your dealer.

2. Precautionary Safety Measures

•Measurement category III is for measurements performed in the building installation.

•Measurement category II is for measurements performed on circuits directly connected to the low-voltage

installation.

•Measurement category I is for measurements performed on circuits not directly connected to the mains.

•When using this multimeter, the user must observe all normal safety rules concerning:

oprotection against the dangers of electric current.

oprotection of the multimeter against misuse.

•For your own safety, only use the test probes supplied with the instrument. Before use, check that they are in

good condition.

•If the meter is used near noise-generating equipment, be aware that the display may become unstable or may

indicate large errors.

•Do not use the meter or test leads if they look damaged.

•Use the meter only as specified in this manual; otherwise, the protection provided by the meter may be impaired.

•Use extreme caution when working around bare conductors or bus bars.

•Do not operate the meter around explosive gas, vapour or dust.

•Verify the meter's operation by measuring a known voltage. Do not use the meter if it operates abnormally.

Protection may be impaired. When in doubt, have the meter serviced.

•Use the proper terminals, function and range for your measurements.

•When the range of the value to be measured is unknown, check that the range initially set on the multimeter is the

highest possible or, wherever possible, choose the auto-ranging mode.

•To avoid damages to the instrument, do not exceed the maximum limits of the input values shown in the technical

specification tables.

•When the multimeter is linked to measurement circuits, do not touch unused terminals.

•Caution when working with voltages above 60VDC or 30VAC rms. Such voltages pose a shock hazard.

•When using the probes, keep your fingers behind the finger guards.

•When making connections, connect the common test lead before connecting the live test lead; when

disconnecting, disconnect the live test lead before disconnecting the common test lead.

•Before changing functions, disconnect the test leads from the circuit under test.

•For all DC functions, including manual or auto-ranging, to avoid the risk of shock due to possible improper

reading, verify the presence of any AC voltages by first using the AC function. Then select a DC voltage range

equal to or greater than the AC range.

•Disconnect circuit power and discharge all high-voltage capacitors before testing resistance, continuity, diodes or

capacitance.

DVM8264 - 2 - VELLEMAN

•Never perform resistance or continuity measurements on live circuits.

•Before measuring current, check the meter's fuse and turn off power to the circuit before connecting the meter to

the circuit.

•In TV repair work or when carrying out measurements on power switching circuits, remember that high-amplitude

voltage pulses at the test points can damage the multimeter. Use of a TV filter will attenuate any such pulses.

•Use the 9V battery, properly installed in the meter's battery case, to power the meter.

•Replace the battery as soon as the battery indicator ( ) appears. With a low battery, the meter might produce

false readings that can lead to electric shock and personal injury.

•Do not measure voltages above 600V in Category III or 1000V in Category II installations.

•Do not operate the meter with the case (or part of the case) removed.

3. Description

a. Front Panel (fig.1)

1. LCD display

2. Keypad

3. Rotary switch

4. Terminals

b. LCD Display (fig. 2)

DVM8264 - 3 - VELLEMAN

Symbol Description

The battery is low.

Warning: To avoid false readings, which could lead to possible electric shocks or personal injury,

replace the battery as soon as the battery indicator appears.

Indicates negative readings.

Indicator for AC voltage or current.

AC voltage and current are displayed as the average of the absolute value of the input, calibrated to

indicate the equipment rms value of a sine wave.

Indicator for DC voltage or current.

The meter is in diode test mode.

The meter is in continuity check mode.

The meter is in data hold mode.

°C or °F °C: Celsius scale or the unit of temperature.

°F: Fahrenheit scale.

V, mV

A, mA, µA

Ω, kΩ, MΩ

V: Volts or the unit of voltage.

mV: Millivolt or 1 x 10

-3

or 0.001 volts.

A: Amperes (amps) or the unit of current.

mA: Millamp or 1 x 10

-3

or 0.001 amps.

µA: Microamp or 1 x 10

-6

or 0.000001 amps.

Ω: Ohm or the unit of resistance.

mΩ: Kilohm or 1 x 10³ or 1000 ohms.

MΩ: Megohm or 1 x 10

or 1,000,000 ohms.

kHz Kilohertz or 1 x 10³ or 1000 Hertz.

µF, nF F: Farad or the unit of capacitance.

µF: Microfarad or 1 x 10

-6

or 0.000001 farads.

nF: Nanofarad or 1 x 10

-9

or 0.000000001 farads.

c. The Keypad

Key Function

ON/OFF Turn the meter on or off.

HOLD Press HOLD to enter and exit the data hold mode.

LIGHT Press LIGHT to turn the backlight on. After about 5 seconds, the backlight goes off automatically.

d. The Terminals

Terminal Description

COM Return terminal for all measurements (receiving the black test lead or the “COM” plug of the

special multi-function socket).

VΩHz

Input for voltage, resistance, frequency, diode and continuity measurements (receiving the red test

lead).

°CmA

hFE Input for capacitance, temperature, hFE and 0.001mA to 200mA current measurements (receiving

the red test lead or the “+” plug of the special multi-function socket).

10A Input for 200mA to 10A current measurements (receiving the red test lead).

DVM8264 - 4 - VELLEMAN

4. Operating Instructions

a. Data Hold Mode

The data hold function makes the meter stop updating the display. This function can be cancelled by changing the

measurement mode or by pushing the HOLD key again.

To enter the mode:

1. Press the HOLD key. appears on the display.

2. A second short press returns the meter to the normal mode.

b. Battery Saver

Turn on the meter. The meter turns off automatically after approximately 30 minutes.

c. AC and DC Voltage Measurement

Voltage is the difference in electrical potential between two points. The polarity of AC voltage varies over time; the

polarity of DC voltage is constant. The meter’s DC voltage ranges are 200mV, 2V, 20V, 200V and 1000V; AC

voltage ranges are 2V, 20V, 200V and 750V.

To measure AC or DC voltages:

1. Set the rotary switch to the proper range.

2. Connect the black and red test leads to the COM and V terminals respectively.

3. Connect the test leads to the circuit being measured.

4. Read the displayed value. The polarity of the red test lead connection will be indicated when making a DC

measurement.

NOTE: The displayed values may be unstable especially at 200mVDC and 2VDC ranges even though you do not

put the test leads into the input terminals. If an erroneous reading is suspected, short the V and the COM

terminal and make sure the LCD displays a zero value.

d. Resistance Measurement

Resistance is an opposition to current flow. The unit of resistance is ohm (Ω). The meter’s resistance ranges are

200Ω, 2kΩ, 20kΩ, 200kΩ, 2MΩ, 20MΩand 200MΩ.

To measure resistance:

1. Set the rotary switch to the proper range.

2. Connect the black and red test leads to the COM and Ωterminals respectively.

3. Connect the test leads to the circuit being measured and read the displayed value.

To avoid electrical shock and/or damage to the instrument, do not attempt

to measure

voltages exceeding 1000VDC / 750VAC rms.

To avoid electrical shock and/or damage to the instrument, do not apply more 1000VDC or

750VAC rms between the COM terminal and the earth ground.

To avoid electrical shock and/or damage to the instrument,

disconnect the circuit power and

discharge all high-voltage capacitors before measuring resistance.

DVM8264 - 5 - VELLEMAN

e. Diode Test

Use the diode test to check diodes and other semiconductor devices. The diode test sends a current through the

semiconductor junction and measures the voltage drop across the junction. A good silicon junction drops between

0.5V and 0.8V.

To test a diode out of a circuit:

1. Set the rotary switch to range.

2. Connect the black and red test leads to the COM and terminals respectively.

3. For forward-bias readings on any semiconductor component, place the red test lead on the component’s

anode and place the black test lead on the cathode.

4. The meter will show the approximate forward voltage of the diode. If the test lead connection is reversed,

only figure “1” is displayed.

In a circuit, a good diode should still produce a forward bias reading of 0.5V to 0.8V. However, the reverse-bias

reading can vary depending on the resistance of other pathways between the probe tips.

f. Continuity Check

Continuity is a complete path for current flow. The beeper sounds if a circuit is complete.

To test for continuity:

1. Set the rotary switch to range.

2. Connect the black and red test lead to the COM and Ωterminals respectively.

3. Connect the test leads to the resistance in the circuit being measured.

4. When the test lead to the circuit is below 30Ω, a continuous beeping will indicate it.

NOTE: Continuity test is available to check open/short of the circuit.

g. Capacitance Measurement

Capacitance is the ability of a component to store an electrical charge. The unit of capacitance is the farad (F).

Most capacitors are in the nanofarad to microfarad range. The meter's capacitance ranges are 20nF, 200nF, 2µF

and 20µF.

To measure capacitance:

1. Set the rotary switch to the proper range.

2. Connect the black and red test leads to the COM and terminals respectively. You can also measure the

capacitance by using the special multi-function socket.

3. Connect the test leads to the capacitor being measured and read the displayed value.

To avoid

electrical shock and/or damage to the instrument,

disconnect the circuit power and

discharge all high-voltage capacitors before testing diodes.

To avoid electrical shock and/or damage to the instrument,

disconnect the circuit power and

discharge all high-voltage capacitors before testing the continuity.

To avoid electrical shock and/or damage to the instrument,

disconnect the circuit power and

discharge all high-voltage capacitors before measuring capacitance. Use the DC voltage

function to confirm that the capacitor is discharged.

DVM8264 - 6 - VELLEMAN

Some tips for measuring capacitance:

•The meter may take a few seconds to stabilize the reading. This is normal for high-capacitance measuring.

•To improve the accuracy of measurements less than 20nF, subtract the residual capacitance of the meter

and leads.

h. Transistor Measurement

To measure a transistor:

1. Set the rotary switch to hFE range.

2. Connect the COM and the “+” plug of the multi-function socket to the COM and hFE terminals.

3. Determine whether the transistor to be tested is NPN or PNP and locate the emitter, base and collector

leads.

4. Insert the leads of the transistor into the proper holes of the multi-function socket.

5. The meter will show the approximate hFE value at test condition of base current 10µ and Vce 2.8V.

i. Frequency Measurement

Frequency is the number of cycles a voltage or current signal completes each second.

To measure frequency:

1. Set the rotary switch to 20kHz range.

2. Connect the black and red test leads to the COM and Hz terminals respectively.

3. Connect the test leads to the circuit being measured.

4. Read the displayed value.

j. Temperature Measurement

To measure temperature:

1. Set the rotary switch to °C range. The LCD will show the current environment temperature.

2. Connect the COM plug and the “+” plug of the multi-function socket to the COM and hFE terminals.

3. Insert the “K” type thermocouples into the multi-function socket. Take care to observe the correct polarity.

4. Touch the object with the thermocouple probe for measurement.

5. Read the LCD.

k. Current Measurement

Current is the flow of electrons through a conductor. The meter's DC current ranges are 20mA, 200mA and 10A;

AC current ranges are 2mA, 200mA and 10A.

To avoid electrical shock and/or damage to the instrument,

do not apply more than 250VDC or

250VAC rms between the hFE terminal and the COM terminal.

Do not measure the frequency on high v

oltage (>380V) to avoid electrical shock hazard and/or

damage to the instrument.

To avoid electrical shock and/or damage to the instrument,

do not apply more than 250VDC or

250VAC rms between the °C terminal and the COM terminal.

To avoid electrical shock, do not use this instrument when voltages at the measurement

surface exceed 60VDC or 24VAC rms.

To avoid

damage to the meter or injury in case of a fuse blow, never attempt an in

circuit

current measurement where the open-circuit potential to earth is higher than 250V.

To avoid damage to the meter, check the meter’s fuse before proceeding. Use the proper

terminals, function and range for your measurement. Never place the test leads in parallel with

a circuit or component when the leads are plugged into the current terminals.

DVM8264 - 7 - VELLEMAN

To measure current:

1. Turn off the power of the measured circuit. Discharge all the high-voltage capacitors.

2. Set the rotary switch to the proper range.

3. Connect the black test lead to the COM terminal and the red test lead to the mA terminal for a maximum of

200mA. For a maximum of 10A, move the red test lead to the 10A terminal.

4. Break the circuit path to be tested. Connect the black test lead to the more negative side of the break;

connect the red test lead to the more positive side of the break (reversing the leads will give a negative

reading, but will not damage the meter).

5. Turn on the power of the measured circuit and read the display. Be sure to note the measurement units at

the right side of the display (mA or A). When only the figure “1” is displayed, it indicates over range

situation and a higher range has to be selected.

6. Turn off the power of the measured circuit and discharge all the high-voltage capacitors. Remove the test

leads and recover the measured circuit.

5. Cleaning and Maintenance

1. Do not attempt to repair or service your meter unless you are qualified to do so and have relevant calibration,

performance test and service information.

2. To avoid electrical shock or damage to the meter, do not get water inside the housing. Remove the test leads and

any input signals before opening the housing.

3. Wipe the device regularly with a moist, lint-free cloth. Do not use alcohol or solvents.

4. To clean the terminals, turn off the meter and remove all the test leads. Shake out any dirt that may be in the

terminals. Soak a new swab with cleaning and oiling agent. Work the swab around each terminal. The oiling agent

insulates the terminals from moisture-related contamination.

5. Replace the battery as soon as the indicator ( ) appears to avoid false readings, which could lead to possible

electric shock or personal injury. Before replacing the battery, disconnect the test leads and/or connectors from

any circuit under test, turn the meter off and remove the test leads from the input terminals. Unscrew the two

screws on the battery cover using an appropriate screwdriver. Replace the battery and close the battery

compartment again.

6. Using this appliance in an environment with strong electromagnetic field (approx. 3V/m), may influence its

measuring accuracy. The measuring result can be strongly deviating from the actual value.

6. Technical Specifications

Environmental Conditions 1000V CAT. II and 600V CAT. III

Pollution Degree 2

Altitude < 2000m

Operating Temperature 0°C ~ 40°C or 32°F ~ 122°F (< 80% RH, < 10°C)

Storage Temperature -10°C ~ 60°C or 14°F ~ 140°F (< 70% RH, battery removed)

Temperature Coefficient 0.1x / C° (< 18°C or > 28°C)

Max. Voltage between Terminals and Earth 750VAC rms or 1000VDC

Fuse Protection mA, resettable fuse (F200mA / 250V)

Sample Rate 3x/sec for digital data

Display 3 ½ digits LCD with automatic indication of functions and symbols

Display Size 18mm

Over Range Indication yes (“1”)

Low Battery Indication yes ( )

Polarity Indication “-“ displayed automatically

Data Hold yes

Backlight white LEDs

Auto Power-Off yes

Power Supply 9V battery

Dimensions 195 x 92 x 55mm

Weight ± 380g (with battery)

Accessories manual, test leads, holster, temperature probe, 9V battery

DVM8264 - 8 - VELLEMAN

DC Voltage

Range Resolution Accuracy

200mV 0.1mV

2V 1mV

20V 10mV

200V 100mV

± 0.5% + 1 digit

1000V 1V ± 0.8% + 2 digits

Input Impedance: 10 Mohms

Max. Input Voltage: 250V DC or AC rms for 200mV range and 1000V DC or 750V AC for other ranges

AC Voltage

Range Resolution Accuracy

2V 1mV

20V 10mV

200V 100mV

± 0.8% + 3 digits

750V 1V ± 1.2% + 3 digits

Input Impedance: 10 Mohms

Max. Input Voltage: 250V DC or AC rms for 200mV range and 1000V DC or 750V AC for other ranges

Frequency Range: 40Hz – 200Hz for 750V range, 40Hz – 400Hz for other ranges

Response: Average, calibrated in rms of sine wave

Frequency

Range Resolution Accuracy

20kHz 10Hz ± 1.5% + 5 digits

Overload Protection: 380V DC or 380V AC rms

Input Voltage Range: 200mV – 10V AC rms

Resistance

Range Resolution Accuracy

200 ohms 0.1 ohms ± 0.8% + 3 digits

2 kohms 1 ohms

20 kohms 10 ohms

200 kohms 100 ohms

2 Mohms 1 kohms

± 0.8% + 1 digit

20 Mohms 10 kohms ± 1.0% + 2 digits

200 Mohms 0.1 Mohms ± 5.0% + 10 digits

Overload Protection: 380V DC or 380V AC rms

Open Circuit Voltage: Less than 700mV

DVM8264 - 9 - VELLEMAN

Diode

Range Resolution Function

1mV Displays approx. forward voltage of

diode

Forward DC Current: ± 1mA

Reverse DC Voltage: ± 2.8V

Overload Protection: 380V DC or 380V AC rms

Audible Continuity

Range Continuity Beeper

≤30 ohms

Open Circuit Voltage: Less than 700mV

Overload Protection: 380V DC or 380V AC rms

Transistor

Range Description Test Condition

hFE Displays approx. hFE value (0-1000)

of transistor under test (all type) Base current approx. 10µA, Vce

approx. 2.8V

Temperature

Range Resolution Accuracy

-20°C ~ 0°C ± 5.0% + 4 digits

1°C ~ 400°C ± 1.0% + 3 digits

401°C ~ 1000°C

1°C

± 2.0%

Overload Protection: Resettable fuse (F200mA / 250V)

Temperature specifications do not include thermocouple errors.

Capacitance

Range Resolution Accuracy

20nF 10pF

200nF 0.1nF

2µF 1nF

20µF 10nF

± 4.0% + 3 digits

Overload Protection: Resettable fuse (F200mA / 250V)

DVM8264 - 10 - VELLEMAN

DC Current

Range Resolution Accuracy

20mA 10µA

200mA 0.1mA ± 1.5% + 1 digits

10A 10mA ± 2.0% + 5 digits

Overload Protection: Resettable fuse (F200mA / 250V), 10A range unfused

Max. Input Current: 200mA DC or 200mA AC rms for mA range, 10A DC or 10A AC rms for 10A ranges

For measurements > 5A, max. 4 minutes ON to measure, 10 minutes OFF; Above 10A unspecified

AC Current

Range Resolution Accuracy

2mA 1µA ± 1.0% + 3 digits

200mA 0.1mA ± 1.8% + 3 digits

10A 10mA ± 3.0% + 7 digits

Overload Protection: Resettable fuse (F200mA / 250V), 10A range unfused

Max. Input Current: 200mA DC or 200mA AC rms for mA range, 10A DC or 10A AC rms for 10A ranges

For measurements > 5A, max. 4 minutes ON to measure, 10 minutes OFF; Above 10A unspecified

Frequency Range: 40Hz – 400Hz

Response: Average, calibrated in rms of sine wave

The information in this manual is subject to change without prior notice.

DVM8264 – 3 ½-DIGIT DIGITALE MULTIMETER – 30 BEREIKEN

1. Inleiding en kenmerken

Aan alle ingezetenen van de Europese Unie

Belangrijke milieu-informatie betreffende dit product

Dit symbool op het toestel of de verpakking geeft aan dat, als het na zijn levenscyclus wordt weggeworpen,

dit toestel schade kan toebrengen aan het milieu.

Gooi dit toestel (en eventuele batterijen) niet bij het gewone huishoudelijke afval; het moet bij een

gespecialiseerd bedrijf terechtkomen voor recyclage.

U moet dit toestel naar uw verdeler of naar een lokaal recyclagepunt brengen.

Respecteer de plaatselijke milieuwetgeving.

Hebt u vragen, contacteer dan de plaatselijke autoriteiten inzake verwijdering.

Dank u voor uw aankoop! Lees deze handleiding grondig voor u het toestel in gebruik neemt. Werd het toestel

beschadigd tijdens het transport, installeer het dan niet en raadpleeg uw dealer.

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