Tekpower DT830B LCD digitalni multimetar - uputstvo za upotrebu

1. Uvod

The Tekpower DT830B is a compact and reliable digital multimeter designed for basic electrical measurements. It features a large LCD display and is capable of measuring DC voltage, AC voltage, DC current, resistance, diode forward voltage, and transistor hFE. This manual provides detailed instructions for safe and effective use of your multimeter.

Figure 1.1: Tekpower DT830B Digital Multimeter with included test leads.

2. Sigurnosne informacije

WARNING: To avoid electrical shock or damage to the meter, do not exceed the maximum input limits. Always remove test leads before opening the case for battery or fuse replacement.

• Always ensure the multimeter is set to the correct range before making a measurement.
• Ne primjenjivati ​​voltage to the meter when the rotary switch is set to current, resistance, or diode/hFE functions.
• Budite oprezni pri radu s volumomtagiznad 30V AC RMS, 42V peak ili 60V DC. Ovi volumenitagpredstavljaju opasnost od strujnog udara.
• Prije svake upotrebe provjerite mjerne kablove da li imaju oštećenja. Ne koristite ako je izolacija napukla ili izložena.
• Ne koristite mjerač ako izgleda oštećeno ili ako je kućište otvoreno.
• Always disconnect power to the circuit under test before connecting or disconnecting test leads for current measurements.

Slika 2.1: Pozadi view of the multimeter showing safety warnings and battery compartment.

3. Sadržaj paketa

Provjerite da li se sve stavke nalaze u vašem paketu:

• Tekpower DT830B Digital Multimeter
• One pair of Test Leads (Red and Black)
• 9V Battery (may be included or separate)
• Korisnički priručnik (ovaj dokument)

Figure 3.1: Included test leads.

4. Značajke proizvoda

• Digital AC/DC multimeter with diode and transistor test function
• Large 2"X1/2" LCD display with a maximum reading of 1999
• Automatic low battery and overload indication
• Light and compact, easily fits into a pocket

5. Identifikacija komponente

Slika 5.1: Prednja strana view of the multimeter with key components labeled.

1. LCD ekran: Shows measurement readings, polarity, and unit symbols.
2. Okretni prekidač: Koristi se za odabir željene funkcije i raspona mjerenja.
3. Ulazne utičnice:
   • COM (zajednički) priključak: Za crni (negativni) testni kabel.
   • VΩmA priključak: Za crveni (pozitivni) testni kabel za volumentage, resistance, and current up to 200mA.
   • 10A utičnica: For the red (positive) test lead for current measurements between 200mA and 10A.
4. hFE utičnica: Used for testing transistors (NPN/PNP).

6. Podešavanje

6.1. Instalacija baterije

The DT830B multimeter requires a 9V battery (NEDA 1604 or 6F22 type). To install or replace the battery:

1. Ensure the multimeter is turned OFF and all test leads are disconnected from the input jacks.
2. Locate the battery compartment cover on the back of the unit (refer to Figure 2.1).
3. Remove the screw(s) securing the cover and carefully lift it off.
4. Spojite 9V bateriju na držač baterije, pazeći na ispravan polaritet.
5. Stavite bateriju u odjeljak i vratite poklopac, pričvrstivši ga vijkom (vijcima).

6.2. Povezivanje ispitnih vodova

Spojite mjerne kabele na odgovarajuće ulazne priključke:

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

7. Uputstvo za upotrebu

7.1. Opći rad

• Uključivanje/isključivanje: Rotate the switch from the OFF position to any desired function to turn the meter ON. Rotate back to OFF to turn it OFF.
• Izbor raspona: The DT830B is a manual ranging multimeter. Select a range higher than the expected measurement value. If the value is unknown, start with the highest range and decrease it until a suitable reading is obtained. An 'OL' (Overload) or '1' on the display indicates the range is too low.

7.2. DC Voltage mjerenje (DCV)

1. Set the rotary switch to the desired DCV range (e.g., 20V, 200V).
2. Connect the black test lead to the COM jack and the red test lead to the VΩmA jack.
3. Connect the test leads in parallel across the component or circuit to be measured.
4. Pročitajte voltage vrijednost na LCD zaslonu.

7.3. AC Voltage mjerenje (ACV)

1. Set the rotary switch to the desired ACV range (e.g., 200V, 750V).
2. Connect the black test lead to the COM jack and the red test lead to the VΩmA jack.
3. Connect the test leads in parallel across the AC source or component.
4. Pročitajte voltage vrijednost na LCD zaslonu.

7.4. Mjerenje istosmjerne struje (DCA)

OPREZ: Nikada ne spajajte mjerač paralelno s voltmetrom.tagizvor prilikom mjerenja struje. To može pregorjeti osigurač ili oštetiti mjerač.

1. Set the rotary switch to the desired DCA range (e.g., 20mA, 200mA, 10A).
2. For currents up to 200mA, connect the red test lead to the VΩmA jack. For currents up to 10A, connect the red test lead to the 10A jack. The black lead remains in COM.
3. Disconnect power to the circuit. Break the circuit and connect the meter in series with the load.
4. Priključite napajanje na strujno kolo i očitajte trenutnu vrijednost na LCD ekranu.

7.5. Mjerenje otpora (Ω)

CAUTION: Ensure the circuit under test is completely de-energized before measuring resistance. Do not measure resistance on live circuits.

1. Set the rotary switch to the desired Resistance range (e.g., 200Ω, 2kΩ, 2MΩ).
2. Connect the black test lead to the COM jack and the red test lead to the VΩmA jack.
3. Spojite mjerne kablove preko komponente čiji otpor treba izmjeriti.
4. Očitajte vrijednost otpora na LCD ekranu.

7.6. Test diode

1. Set the rotary switch to the Diode symbol (▶|).
2. Connect the black test lead to the COM jack and the red test lead to the VΩmA jack.
3. Spojite crveni kabel na anodu, a crni kabel na katodu diode. Na ekranu će se prikazati vrijednost direktne struje.tage drop (typically 0.5V to 0.8V for silicon diodes).
4. Reverse the leads. The display should show 'OL' (open circuit) for a good diode.

7.7. Transistor (hFE) Test

1. Postavite okretni prekidač u položaj hFE.
2. Odredite da li je tranzistor NPN ili PNP.
3. Insert the transistor leads (Emitter, Base, Collector) into the corresponding holes in the hFE socket on the multimeter.
4. Read the hFE (DC current gain) value on the LCD display.

8. Održavanje

8.1. Zamjena baterije

When the battery symbol appears on the LCD display, the 9V battery needs to be replaced. Follow the steps outlined in Section 6.1.

8.2. Zamjena osigurača

If the meter does not function correctly on current ranges, the fuse may be blown. The DT830B uses a 0.5A/250V fuse for the mA range and an unfused 10A range. To replace the fuse:

1. Provjerite je li multimetar isključen i da su svi mjerni kabeli isključeni.
2. Remove the battery compartment cover as described in Section 6.1.
3. Carefully remove the old fuse and replace it with a new fuse of the same type and rating (0.5A/250V).
4. Replace the battery and the compartment cover.

8.3. Čišćenje

Obrišite kućište oglasomamp krpa i blagi deterdžent. Ne koristite abrazive ili otapala.

9. Otkrivanje problema

10. Specifikacije

11. Garancija i podrška

The Tekpower DT830B Digital Multimeter comes with a 1-Year Tekpower Warranty.

For technical support or warranty claims, please refer to the contact information provided with your purchase or visit the official Tekpower webSačuvajte račun kao dokaz o kupovini u svrhu garancije.