Uporabniški priročnik za digitalni multimeter Velleman DVM810

1. Uvod

The Velleman DVM810 is a compact and economical 3 1/2 digit digital multimeter designed for measuring DC and AC voltages, DC currents, resistance, and for performing diode and transistor (hFE) tests. It features overload protection and automatic polarity indication, making it suitable for hobbyists, field use, and workshops. This manual provides essential information for the safe and effective operation of your DVM810 multimeter.

2. Značilnosti izdelka

• Automatic polarity indication
• voltage measurements: AC 500V and DC 500V maximum
• Current measurements: DC 10A maximum (0.2A fused, 10A unfused)
• Resistance measurements: Up to 2MΩ
• Diode and transistor (hFE) test functions
• Zaščita pred preobremenitvijo
• Compact design with 3 1/2 digit LCD display

3. Vsebina paketa

Prosimo, preverite vsebino paketa in se prepričajte, da so prisotni vsi elementi:

• Digitalni multimeter Velleman DVM810
• Merilni kabli (en rdeč, en črn)
• Navodila za uporabo

4. Pomembne varnostne informacije

Read all safety warnings and instructions carefully before using this product. Failure to follow these instructions may result in electric shock, fire, or serious injury.

• Always ensure the multimeter is set to the correct function and range before making any measurements.
• Never exceed the maximum input limits for any range. The maximum voltage for AC/DC is 500V.
• Do not attempt to measure current on circuits with voltagpresega 250V.
• Inspect test leads for damaged insulation or exposed metal before each use. Replace damaged leads immediately.
• Do not use the multimeter if it appears damaged or if the case is open.
• Exercise extreme caution when working with live circuits. Use appropriate personal protective equipment.
• Vedno izključite napajanje tokokroga in izpraznite visokonapetostnetage capacitors before measuring resistance or performing diode/transistor tests.
• Zamenjajte baterijo, ko se na zaslonu prikaže indikator nizke napolnjenosti baterije, da zagotovite natančne odčitke.

5. Izdelek je končanview

Familiarize yourself with the components of your Velleman DVM810 multimeter:

Figure 1: Velleman DVM810 Digital Multimeter. This image displays the front view of the compact multimeter, highlighting its liquid crystal display (LCD), the central rotary function switch, and the input jacks for test leads at the bottom.

• LCD zaslon: Shows measurement readings, units, and polarity.
• Vrtljivo stikalo: Uporablja se za izbiro želene merilne funkcije in območja.
• Vhodni priključki:
• COM priključek: Common (negative) input for all measurements. Connect the black test lead here.
• Vtičnica VΩmA: Pozitiven vhod za volumentage, resistance, and current measurements up to 200mA. Connect the red test lead here.
• 10A vtičnica: Positive input for high current measurements (up to 10A). Connect the red test lead here for 10A measurements.
• Testni vodi: Red and black leads used to connect the multimeter to the circuit under test.

6. Nastavitev

6.1 Namestitev baterije

The DVM810 multimeter requires a 9V battery (not always included). To install or replace the battery:

1. Ensure the multimeter is turned OFF (rotary switch set to OFF).
2. Poiščite pokrov predalčka za baterije na zadnji strani enote.
3. Odstranite vijak(e), s katerim je pritrjen pokrov, in ga previdno dvignite.
4. Connect a new 9V battery to the battery clip, observing correct polarity.
5. Vstavite baterijo v predal in namestite pokrov, ki ga pritrdite z vijakom(-i).

6.2 Priključitev merilnih vodnikov

Always connect the test leads correctly for accurate and safe measurements:

1. Črni testni kabel vstavite v COM (navadni) priključek.
2. Za večino meritev (volumtage, resistance, diode, hFE, and current up to 200mA), insert the red test lead into the VΩmA jack.
3. Za meritve visokega toka (do 10 A) vstavite rdečo merilno vez v 10A jack.

7. Navodila za uporabo

Before making any measurement, ensure the test leads are correctly connected and the rotary switch is set to the appropriate function and range.

7.1 Merjenje DC Voltage (V=)

1. Vstavite rdeči kabel v VΩmA jack and the black lead into the COM jack.
2. Vrtljivo stikalo nastavite na želeno glasnost enosmernega tokatage (V=) range. Start with the highest range if the voltage ni znan.
3. Connect the test leads across the component or circuit to be measured (in parallel).
4. Preberite zvtage value on the LCD display. The display will show the correct polarity.

7.2 Merjenje AC Voltage (V~)

1. Vstavite rdeči kabel v VΩmA jack and the black lead into the COM jack.
2. Vrtljivo stikalo nastavite na želeno glasnost izmeničnega tokatage (V~) range. Start with the highest range if the voltage ni znan.
3. Connect the test leads across the component or circuit to be measured (in parallel).
4. Preberite zvtage vrednost na LCD zaslonu.

7.3 Merjenje enosmernega toka (A=)

Caution: Never connect the multimeter in parallel with a voltagPri merjenju toka ne uporabljajte vira električne energije, saj lahko to pregori varovalko ali poškoduje merilnik.

1. Determine the expected current. For currents up to 200mA, insert the red lead into the VΩmA jack. For currents up to 10A, insert the red lead into the 10A jack. Always insert the black lead into the COM jack.
2. Set the rotary switch to the appropriate DC Current (A=) range. Start with the highest range if the current is unknown.
3. Turn off power to the circuit. Open the circuit where the current is to be measured.
4. Multimeter priključite zaporedno na vezje.
5. Restore power to the circuit and read the current value on the LCD display.

7.4 Merjenje upornosti (Ω)

Caution: Ensure the circuit is completely de-energized and all capacitors are discharged before measuring resistance.

1. Vstavite rdeči kabel v VΩmA jack and the black lead into the COM jack.
2. Set the rotary switch to the desired Resistance (Ω) range. Start with a higher range if the resistance is unknown.
3. Merilne kable priključite na komponento, ki jo želite izmeriti.
4. Odčitajte vrednost upora na LCD-zaslonu.

7.5 Preskus diode

Caution: Ensure the diode is disconnected from the circuit or the circuit is de-energized before testing.

1. Vstavite rdeči kabel v VΩmA jack and the black lead into the COM jack.
2. Set the rotary switch to the Diode symbol (→|).
3. Rdeči kabel priključite na anodo, črni pa na katodo diode. Na zaslonu se bo prikazala napetost naprej.tagpadec napetosti (običajno od 0.5 V do 0.8 V za silicijeve diode).
4. Reverse the leads. The display should show 'OL' (Overload) for a good diode. If it shows a reading in both directions or 'OL' in both directions, the diode may be faulty.

7.6 Transistor (hFE) Test

Caution: Ensure the transistor is disconnected from the circuit before testing.

1. Vstavite rdeči kabel v VΩmA jack and the black lead into the COM jack.
2. Vrtljivo stikalo nastavite v položaj hFE.
3. Identify if the transistor is NPN or PNP. Insert the transistor's emitter, base, and collector leads into the corresponding holes in the hFE socket on the multimeter.
4. Read the hFE (DC current gain) value on the LCD display.

8. Specifikacije

9. Vzdrževanje

9.1 Zamenjava baterije

When the low battery indicator appears on the LCD, replace the 9V battery as described in Section 6.1. A weak battery can lead to inaccurate readings.

9.2 Čiščenje

Za čiščenje multimetra obrišite ohišje zamp cloth and a mild detergent. Do not use abrasives or solvents. Ensure the unit is completely dry before use.

9.3 Pregled merilnih vezi

Regularly inspect the test leads for any signs of damage, such as cracked insulation, exposed wires, or loose connections. Replace damaged leads immediately to prevent electric shock hazards.

10. Odpravljanje težav

• Ni prikaza ali pa je prikaz bled: Preverite baterijo. Po potrebi jo zamenjajte.
• Napačne odčitke:
• Ensure the rotary switch is set to the correct function and range.
• Preverite voltage; replace if low.
• Prepričajte se, da so merilni kabli pravilno priključeni in nepoškodovani.
• For resistance measurements, ensure the circuit is de-energized.
• Prikazano je 'OL' (preobremenitev): The measured value exceeds the selected range. Select a higher range or ensure the circuit is within the meter's capabilities.
• Fuse blown (during current measurement): If the meter stops measuring current, the internal fuse may have blown. Refer to a qualified technician for fuse replacement.

11. Garancija in podpora

Warranty information for the Velleman DVM810 Digital Multimeter is typically provided with your purchase documentation or can be found on the official Velleman website. For technical support, service, or further inquiries, please refer to the contact information provided by your retailer or the manufacturer's official support channels.