Velleman DVM810 digitalni multimetar - korisnički priručnik

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. Značajke proizvoda

• 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
• Zaštita od preopterećenja
• Compact design with 3 1/2 digit LCD display

3. Sadržaj paketa

Molimo Vas da provjerite sadržaj paketa kako biste bili sigurni da su svi artikli prisutni:

• Velleman DVM810 Digitalni multimetar
• Ispitni kablovi (jedan crveni, jedan crni)
• Uputstvo za upotrebu

4. Važne informacije o sigurnosti

Pažljivo pročitajte sva sigurnosna upozorenja i upute prije upotrebe ovog proizvoda. Nepoštivanje ovih uputa može dovesti do strujnog udara, požara ili ozbiljnih ozljeda.

• Uvijek se uvjerite da je multimetar postavljen na ispravnu funkciju i raspon prije bilo kakvog mjerenja.
• Never exceed the maximum input limits for any range. The maximum voltage for AC/DC is 500V.
• Ne pokušavajte mjeriti struju na strujnim kolima sa voltagpreko 250V.
• Inspect test leads for damaged insulation or exposed metal before each use. Replace damaged leads immediately.
• Ne koristite multimetar ako izgleda oštećeno ili ako je kućište otvoreno.
• Exercise extreme caution when working with live circuits. Use appropriate personal protective equipment.
• Uvijek isključite napajanje strujnog kola i ispraznite visokonaponskitage capacitors before measuring resistance or performing diode/transistor tests.
• Zamijenite bateriju kada se na ekranu pojavi indikator slabe baterije kako biste osigurali tačna očitavanja.

5. Proizvod je gotovview

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 ekran: Shows measurement readings, units, and polarity.
• Okretni prekidač: Koristi se za odabir željene funkcije i raspona mjerenja.
• Ulazne utičnice:
• COM Jack: Common (negative) input for all measurements. Connect the black test lead here.
• VΩmA priključak: Pozitivan ulaz za volumentage, resistance, and current measurements up to 200mA. Connect the red test lead here.
• 10A utičnica: Positive input for high current measurements (up to 10A). Connect the red test lead here for 10A measurements.
• Test kablovi: Red and black leads used to connect the multimeter to the circuit under test.

6. Podešavanje

6.1 Instalacija 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. Pronađite poklopac odjeljka za baterije na stražnjoj strani uređaja.
3. Remove the screw(s) securing the cover and carefully lift it off.
4. Spojite novu 9V bateriju na držač baterije, pazeći na ispravan polaritet.
5. Stavite bateriju u odjeljak i vratite poklopac, pričvrstivši ga vijkom (vijcima).

6.2 Spajanje mjernih kabela

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

1. Umetnite crni test kabl u COM (obični) priključak.
2. Za većinu mjerenja (volumentage, resistance, diode, hFE, and current up to 200mA), insert the red test lead into the VΩmA Jack.
3. Za mjerenja visoke struje (do 10A), umetnite crveni mjerni kabel u 10A Jack.

7. Uputstvo za upotrebu

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 Mjerenje DC Voltage (V=)

1. Umetnite crveni provod u VΩmA jack and the black lead into the COM Jack.
2. Podesite rotacijski prekidač na željenu jačinu jednosmjerne struje (DC Vol).tage (V=) range. Start with the highest range if the voltage je nepoznato.
3. Connect the test leads across the component or circuit to be measured (in parallel).
4. Pročitajte voltage value on the LCD display. The display will show the correct polarity.

7.2 Mjerenje AC Voltage (V~)

1. Umetnite crveni provod u VΩmA jack and the black lead into the COM Jack.
2. Podesite rotacijski prekidač na željenu jačinu AC strujetage (V~) range. Start with the highest range if the voltage je nepoznato.
3. Connect the test leads across the component or circuit to be measured (in parallel).
4. Pročitajte voltage vrijednost na LCD zaslonu.

7.3 Mjerenje istosmjerne struje (A=)

Caution: Never connect the multimeter in parallel with a voltagizvor prilikom mjerenja struje, jer to može pregorjeti osigurač ili oštetiti mjerač.

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. Spojite multimetar serijski sa strujnim kolom.
5. Restore power to the circuit and read the current value on the LCD display.

7.4 Mjerenje otpora (Ω)

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

1. Umetnite crveni provod u 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. Spojite mjerne kablove preko komponente koju treba mjeriti.
4. Očitajte vrijednost otpora na LCD ekranu.

7.5 Ispitivanje diode

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

1. Umetnite crveni provod u VΩmA jack and the black lead into the COM Jack.
2. Set the rotary switch to the Diode symbol (→|).
3. Spojite crveni kabel na anodu, a crni kabel na katodu diode. Na ekranu će se prikazati vrijednost direktne struje.tagpad napona (obično od 0.5 V do 0.8 V za silicijumske 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 Test tranzistora (hFE)

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

1. Umetnite crveni provod u VΩmA jack and the black lead into the COM Jack.
2. Postavite okretni prekidač u 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. Održavanje

9.1 Zamjena 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 Čišćenje

Za čišćenje multimetra, obrišite kućište sredstvom za čišćenje.amp cloth and a mild detergent. Do not use abrasives or solvents. Ensure the unit is completely dry before use.

9.3 Inspekcija ispitnih vodova

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. Otkrivanje problema

• Nema prikaza ili slab prikaz: Provjerite bateriju. Zamijenite je ako je potrebno.
• Netačna očitanja:
• Ensure the rotary switch is set to the correct function and range.
• Provjerite zapreminu baterijetage; replace if low.
• Provjerite da li su mjerni kablovi pravilno spojeni i da nisu oštećeni.
• Za mjerenje otpora, provjerite da je strujno kolo bez napona.
• Prikazano je 'OL' (preopterećenje): Izmjerena vrijednost prelazi odabrani raspon. Odaberite viši raspon ili provjerite je li strujno kolo u granicama mogućnosti mjerača.
• 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 i podrška

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.